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ntc thermistors for temperature measurement leaded ntcs, lead spacing 2.5 mm series/type: b57891 date: march 2006 ? epcos ag 2006. reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without epcos' prior express consent is prohibited.
applications heating systems automotive electronics features favorable price/ performance ratio rugged design, epoxy resin encapsulation leads: copper-clad fe wire, tinned ul approval (e69802) options lead spacing 5 mm available on request delivery mode bulk (standard), cardboard tape, reeled or in ammo pack dimensional drawing dimensions in mm approx. weight 0.2 g general technical data climatic category (iec 60068-1) 55/155/56 max. power (at 25 c) p 25 200 mw resistance tolerance d r r /r r 1, 3, 5 % rated temperature t r 25 c dissipation factor (in air) d th approx. 4 mw/k thermal cooling time constant (in air) t c approx. 15 s heat capacity c th approx. 60 mj/k electrical specification and ordering codes r 25 w no. of r/t characteristic b 25/100 k ordering code + = resistance tolerance f = 1% h = 3% j = 5% 2.2 k 1008 3560 1.5% b57891s0222+008 5 k 2003 3980 1.0% b57891s0502+008 10 k 4901 3950 1.0% b57891s0103+008 20 k 2904 4300 1.0% b57891s0203+008 100 k 4003 4450 1.0% b57891s0104+008 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 2 of 25 please read important notes and cautions and warnings at the end of this document.
reliability data test standard test conditions d r 25 /r 25 (typical) remarks storage in dry heat iec 60068-2-2 storage at upper category temperature t: 155 c t: 1000 h < 3% no visible damage storage in damp heat, steady state iec 60068-2-78 temperature of air: 40 c relative humidity of air: 93% duration: 56 days < 1% no visible damage rapid temperature cycling iec 60068-2-14 lower test temperature: 55 c upper test temperature: 155 c number of cycles: 100 < 2% no visible damage endurance p max : 200 mw t: 1000 h < 3% no visible damage long-term stability (empirical value) temperature: 70 c t: 10000 h < 3% no visible damage temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 3 of 25 please read important notes and cautions and warnings at the end of this document.
r/t characteristics b57891s0222f008 r/t no. 1008 t ( c) b 25/100 = 3560 k, r 25 = 2200 w , t r = 25 c, d r r /r r = 1% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 55.0 116830 107930 125730 7.6 1.2 6.1 50.0 86499 80383 92614 7.1 1.2 6.0 45.0 64515 60293 68738 6.5 1.1 5.8 40.0 48466 45537 51395 6.0 1.1 5.7 35.0 36666 34627 38706 5.6 1.0 5.5 30.0 27931 26506 29356 5.1 0.9 5.4 25.0 21395 20398 22392 4.7 0.9 5.2 20.0 16538 15837 17238 4.2 0.8 5.1 15.0 12838 12346 13329 3.8 0.8 4.9 10.0 10051 9706 10396 3.4 0.7 4.8 5.0 7931 7689 8173 3.1 0.7 4.7 0.0 6306 6137 6476 2.7 0.6 4.5 5.0 5040 4922 5157 2.3 0.5 4.4 10.0 4056 3975 4137 2.0 0.5 4.3 15.0 3282 3228 3337 1.7 0.4 4.1 20.0 2674 2638 2710 1.4 0.3 4.0 25.0 2200 2178 2222 1.0 0.3 3.9 30.0 1825 1801 1850 1.3 0.4 3.8 35.0 1510 1485 1535 1.6 0.4 3.7 40.0 1256 1232 1280 1.9 0.5 3.6 45.0 1056 1033 1079 2.2 0.6 3.5 50.0 892.0 870.3 913.7 2.4 0.7 3.4 55.0 751.7 731.5 771.9 2.7 0.8 3.3 60.0 636.9 618.3 655.6 2.9 0.9 3.2 65.0 543.7 526.5 560.9 3.2 1.0 3.1 70.0 466.0 450.2 481.9 3.4 1.1 3.1 75.0 400.3 385.8 414.8 3.6 1.2 3.0 80.0 345.0 331.7 358.2 3.8 1.3 2.9 85.0 299.0 286.9 311.1 4.1 1.4 2.8 90.0 260.1 249.0 271.2 4.3 1.5 2.8 95.0 227.5 217.3 237.6 4.5 1.7 2.7 100.0 199.6 190.3 208.9 4.6 1.8 2.6 105.0 175.2 166.7 183.7 4.8 1.9 2.6 110.0 154.2 146.5 162.0 5.0 2.0 2.5 115.0 136.2 129.1 143.2 5.2 2.1 2.4 120.0 120.5 114.0 127.0 5.4 2.3 2.4 125.0 107.2 101.2 113.1 5.5 2.4 2.3 130.0 95.51 90.05 101.0 5.7 2.5 2.3 135.0 85.19 80.18 90.19 5.9 2.6 2.2 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 4 of 25 please read important notes and cautions and warnings at the end of this document.
b57891s0222f008 r/t no. 1008 t ( c) b 25/100 = 3560 k, r 25 = 2200 w , t r = 25 c, d r r /r r = 1% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 140.0 76.15 71.56 80.75 6.0 2.8 2.2 145.0 68.31 64.08 72.53 6.2 2.9 2.1 150.0 61.40 57.51 65.29 6.3 3.0 2.1 155.0 55.42 51.83 59.02 6.5 3.2 2.0 b57891s0222h008 r/t no. 1008 t ( c) b 25/100 = 3560 k, r 25 = 2200 w , t r = 25 c, d r r /r r = 3% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 55.0 116830 105590 128060 9.6 1.6 6.1 50.0 86499 78653 94344 9.1 1.5 6.0 45.0 64515 59002 70028 8.5 1.5 5.8 40.0 48466 44568 52364 8.0 1.4 5.7 35.0 36666 33893 39439 7.6 1.4 5.5 30.0 27931 25947 29914 7.1 1.3 5.4 25.0 21395 19971 22820 6.7 1.3 5.2 20.0 16538 15507 17568 6.2 1.2 5.1 15.0 12838 12090 13585 5.8 1.2 4.9 10.0 10051 9505 10597 5.4 1.1 4.8 5.0 7931 7530 8332 5.1 1.1 4.7 0.0 6306 6011 6602 4.7 1.0 4.5 5.0 5040 4821 5258 4.3 1.0 4.4 10.0 4056 3894 4218 4.0 0.9 4.3 15.0 3282 3162 3403 3.7 0.9 4.1 20.0 2674 2584 2764 3.4 0.8 4.0 25.0 2200 2134 2266 3.0 0.8 3.9 30.0 1825 1764 1887 3.3 0.9 3.8 35.0 1510 1455 1565 3.6 1.0 3.7 40.0 1256 1207 1305 3.9 1.1 3.6 45.0 1056 1012 1100 4.2 1.2 3.5 50.0 892.0 852.4 931.5 4.4 1.3 3.4 55.0 751.7 716.5 787.0 4.7 1.4 3.3 60.0 636.9 605.5 668.3 4.9 1.5 3.2 65.0 543.7 515.6 571.8 5.2 1.6 3.1 70.0 466.0 440.9 491.2 5.4 1.8 3.1 75.0 400.3 377.8 422.8 5.6 1.9 3.0 80.0 345.0 324.8 365.1 5.8 2.0 2.9 85.0 299.0 280.9 317.1 6.1 2.1 2.8 90.0 260.1 243.8 276.4 6.3 2.3 2.8 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 5 of 25 please read important notes and cautions and warnings at the end of this document.
b57891s0222h008 r/t no. 1008 t ( c) b 25/100 = 3560 k, r 25 = 2200 w , t r = 25 c, d r r /r r = 3% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 95.0 227.5 212.8 242.2 6.5 2.4 2.7 100.0 199.6 186.4 212.9 6.6 2.5 2.6 105.0 175.2 163.2 187.2 6.8 2.7 2.6 110.0 154.2 143.4 165.1 7.0 2.8 2.5 115.0 136.2 126.3 146.0 7.2 2.9 2.4 120.0 120.5 111.6 129.4 7.4 3.1 2.4 125.0 107.2 99.06 115.2 7.5 3.2 2.3 130.0 95.51 88.14 102.9 7.7 3.4 2.3 135.0 85.19 78.48 91.90 7.9 3.5 2.2 140.0 76.15 70.03 82.27 8.0 3.7 2.2 145.0 68.31 62.71 73.90 8.2 3.8 2.1 150.0 61.40 56.28 66.52 8.3 4.0 2.1 155.0 55.42 50.72 60.13 8.5 4.2 2.0 b57891s0222j008 r/t no. 1008 t ( c) b 25/100 = 3560 k, r 25 = 2200 w , t r = 25 c, d r r /r r = 5% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 55.0 116830 103260 130400 11.6 1.9 6.1 50.0 86499 76924 96074 11.1 1.9 6.0 45.0 64515 57712 71319 10.5 1.8 5.8 40.0 48466 43598 53334 10.0 1.8 5.7 35.0 36666 33160 40172 9.6 1.7 5.5 30.0 27931 25389 30473 9.1 1.7 5.4 25.0 21395 19543 23248 8.7 1.7 5.2 20.0 16538 15176 17899 8.2 1.6 5.1 15.0 12838 11833 13842 7.8 1.6 4.9 10.0 10051 9304 10798 7.4 1.5 4.8 5.0 7931 7372 8490 7.1 1.5 4.7 0.0 6306 5884 6728 6.7 1.5 4.5 5.0 5040 4720 5359 6.3 1.4 4.4 10.0 4056 3813 4300 6.0 1.4 4.3 15.0 3282 3096 3469 5.7 1.4 4.1 20.0 2674 2531 2817 5.4 1.3 4.0 25.0 2200 2090 2310 5.0 1.3 3.9 30.0 1825 1728 1923 5.3 1.4 3.8 35.0 1510 1425 1595 5.6 1.5 3.7 40.0 1256 1182 1330 5.9 1.6 3.6 45.0 1056 991.1 1122 6.2 1.8 3.5 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 6 of 25 please read important notes and cautions and warnings at the end of this document.
b57891s0222j008 r/t no. 1008 t ( c) b 25/100 = 3560 k, r 25 = 2200 w , t r = 25 c, d r r /r r = 5% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 50.0 892.0 834.6 949.4 6.4 1.9 3.4 55.0 751.7 701.5 802.0 6.7 2.0 3.3 60.0 636.9 592.8 681.1 6.9 2.1 3.2 65.0 543.7 504.7 582.7 7.2 2.3 3.1 70.0 466.0 431.5 500.5 7.4 2.4 3.1 75.0 400.3 369.8 430.8 7.6 2.6 3.0 80.0 345.0 317.9 372.0 7.8 2.7 2.9 85.0 299.0 274.9 323.1 8.1 2.8 2.8 90.0 260.1 238.6 281.6 8.3 3.0 2.8 95.0 227.5 208.2 246.7 8.5 3.1 2.7 100.0 199.6 182.4 216.9 8.6 3.3 2.6 105.0 175.2 159.7 190.7 8.8 3.4 2.6 110.0 154.2 140.3 168.1 9.0 3.6 2.5 115.0 136.2 123.6 148.7 9.2 3.8 2.4 120.0 120.5 109.2 131.8 9.4 3.9 2.4 125.0 107.2 96.92 117.4 9.5 4.1 2.3 130.0 95.51 86.23 104.8 9.7 4.3 2.3 135.0 85.19 76.77 93.60 9.9 4.4 2.2 140.0 76.15 68.51 83.80 10.0 4.6 2.2 145.0 68.31 61.35 75.27 10.2 4.8 2.1 150.0 61.40 55.05 67.75 10.3 5.0 2.1 155.0 55.42 49.61 61.24 10.5 5.1 2.0 b57891s0502f008 r/t no. 2003 t ( c) b 25/100 = 3980 k, r 25 = 5000 w , t r = 25 c, d r r /r r = 1% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 55.0 487890 458880 516900 5.9 0.8 7.4 50.0 338250 319530 356980 5.5 0.8 7.2 45.0 237690 225460 249920 5.1 0.7 6.9 40.0 169160 161090 177230 4.8 0.7 6.7 35.0 121800 116420 127170 4.4 0.7 6.5 30.0 88766 85153 92378 4.1 0.7 6.2 25.0 65333 62889 67776 3.7 0.6 6.0 20.0 48614 46950 50278 3.4 0.6 5.8 15.0 36503 35365 37641 3.1 0.6 5.6 10.0 27680 26898 28463 2.8 0.5 5.5 5.0 21166 20628 21704 2.5 0.5 5.3 0.0 16330 15959 16701 2.3 0.4 5.1 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 7 of 25 please read important notes and cautions and warnings at the end of this document.
b57891s0502f008 r/t no. 2003 t ( c) b 25/100 = 3980 k, r 25 = 5000 w , t r = 25 c, d r r /r r = 1% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 5.0 12696 12441 12951 2.0 0.4 5.0 10.0 9951 9776 10126 1.8 0.4 4.8 15.0 7855 7736 7974 1.5 0.3 4.7 20.0 6246 6166 6326 1.3 0.3 4.5 25.0 5000 4950 5050 1.0 0.2 4.4 30.0 4029 3978 4080 1.3 0.3 4.3 35.0 3266 3218 3315 1.5 0.4 4.1 40.0 2665 2619 2710 1.7 0.4 4.0 45.0 2186 2144 2227 1.9 0.5 3.9 50.0 1803 1766 1841 2.1 0.5 3.8 55.0 1495 1461 1529 2.3 0.6 3.7 60.0 1247 1216 1277 2.5 0.7 3.6 65.0 1044 1017 1072 2.6 0.8 3.5 70.0 878.9 854.3 903.5 2.8 0.8 3.4 75.0 743.1 721.1 765.2 3.0 0.9 3.3 80.0 631.0 611.3 650.8 3.1 1.0 3.2 85.0 538.2 520.5 555.9 3.3 1.0 3.1 90.0 460.8 444.9 476.6 3.4 1.1 3.1 95.0 396.1 381.9 410.3 3.6 1.2 3.0 100.0 341.8 329.0 354.5 3.7 1.3 2.9 105.0 296.2 284.8 307.7 3.9 1.4 2.9 110.0 257.7 247.3 268.0 4.0 1.4 2.8 115.0 224.6 215.3 233.9 4.1 1.5 2.7 120.0 196.4 188.0 204.8 4.3 1.6 2.7 125.0 171.9 164.4 179.5 4.4 1.7 2.6 130.0 150.9 144.1 157.8 4.5 1.8 2.5 135.0 133.3 127.1 139.4 4.6 1.9 2.5 140.0 118.0 112.3 123.6 4.8 2.0 2.4 145.0 104.7 99.55 109.8 4.9 2.1 2.4 150.0 93.08 88.43 97.73 5.0 2.2 2.3 155.0 83.06 78.82 87.30 5.1 2.3 2.3 b57891s0502h008 r/t no. 2003 t ( c) b 25/100 = 3980 k, r 25 = 5000 w , t r = 25 c, d r r /r r = 3% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 55.0 487890 449130 526650 7.9 1.1 7.4 50.0 338250 312760 363750 7.5 1.0 7.2 45.0 237690 220700 254670 7.1 1.0 6.9 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 8 of 25 please read important notes and cautions and warnings at the end of this document.
b57891s0502h008 r/t no. 2003 t ( c) b 25/100 = 3980 k, r 25 = 5000 w , t r = 25 c, d r r /r r = 3% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 40.0 169160 157700 180610 6.8 1.0 6.7 35.0 121800 113980 129610 6.4 1.0 6.5 30.0 88766 83378 94153 6.1 1.0 6.2 25.0 65333 61583 69083 5.7 1.0 6.0 20.0 48614 45978 51250 5.4 0.9 5.8 15.0 36503 34634 38371 5.1 0.9 5.6 10.0 27680 26345 29016 4.8 0.9 5.5 5.0 21166 20204 22128 4.5 0.9 5.3 0.0 16330 15632 17028 4.3 0.8 5.1 5.0 12696 12187 13205 4.0 0.8 5.0 10.0 9951 9577 10325 3.8 0.8 4.8 15.0 7855 7579 8131 3.5 0.8 4.7 20.0 6246 6041 6451 3.3 0.7 4.5 25.0 5000 4850 5150 3.0 0.7 4.4 30.0 4029 3897 4160 3.3 0.8 4.3 35.0 3266 3153 3380 3.5 0.8 4.1 40.0 2665 2566 2763 3.7 0.9 4.0 45.0 2186 2101 2271 3.9 1.0 3.9 50.0 1803 1730 1877 4.1 1.1 3.8 55.0 1495 1432 1559 4.3 1.2 3.7 60.0 1247 1191 1302 4.5 1.2 3.6 65.0 1044 996.0 1093 4.6 1.3 3.5 70.0 878.9 836.7 921.1 4.8 1.4 3.4 75.0 743.1 706.2 780.1 5.0 1.5 3.3 80.0 631.0 598.7 663.4 5.1 1.6 3.2 85.0 538.2 509.7 566.6 5.3 1.7 3.1 90.0 460.8 435.7 485.9 5.4 1.8 3.1 95.0 396.1 374.0 418.3 5.6 1.9 3.0 100.0 341.8 322.2 361.4 5.7 2.0 2.9 105.0 296.2 278.8 313.6 5.9 2.1 2.9 110.0 257.7 242.2 273.1 6.0 2.2 2.8 115.0 224.6 210.8 238.4 6.1 2.3 2.7 120.0 196.4 184.1 208.7 6.3 2.4 2.7 125.0 171.9 160.9 182.9 6.4 2.5 2.6 130.0 150.9 141.1 160.8 6.5 2.6 2.5 135.0 133.3 124.4 142.1 6.6 2.7 2.5 140.0 118.0 110.0 126.0 6.8 2.8 2.4 145.0 104.7 97.46 111.9 6.9 2.9 2.4 150.0 93.08 86.57 99.59 7.0 3.0 2.3 155.0 83.06 77.16 88.96 7.1 3.1 2.3 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 9 of 25 please read important notes and cautions and warnings at the end of this document.
b57891s0502j008 r/t no. 2003 t ( c) b 25/100 = 3980 k, r 25 = 5000 w , t r = 25 c, d r r /r r = 5% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 55.0 487890 439370 536410 9.9 1.3 7.4 50.0 338250 306000 370510 9.5 1.3 7.2 45.0 237690 215950 259430 9.1 1.3 6.9 40.0 169160 154320 184000 8.8 1.3 6.7 35.0 121800 111550 132040 8.4 1.3 6.5 30.0 88766 81603 95929 8.1 1.3 6.2 25.0 65333 60276 70389 7.7 1.3 6.0 20.0 48614 45005 52223 7.4 1.3 5.8 15.0 36503 33904 39101 7.1 1.3 5.6 10.0 27680 25791 29570 6.8 1.3 5.5 5.0 21166 19781 22551 6.5 1.2 5.3 0.0 16330 15306 17354 6.3 1.2 5.1 5.0 12696 11933 13459 6.0 1.2 5.0 10.0 9951 9378 10524 5.8 1.2 4.8 15.0 7855 7422 8288 5.5 1.2 4.7 20.0 6246 5916 6576 5.3 1.2 4.5 25.0 5000 4750 5250 5.0 1.1 4.4 30.0 4029 3816 4241 5.3 1.2 4.3 35.0 3266 3087 3445 5.5 1.3 4.1 40.0 2665 2513 2816 5.7 1.4 4.0 45.0 2186 2057 2314 5.9 1.5 3.9 50.0 1803 1694 1913 6.1 1.6 3.8 55.0 1495 1402 1589 6.3 1.7 3.7 60.0 1247 1166 1327 6.5 1.8 3.6 65.0 1044 975.1 1114 6.6 1.9 3.5 70.0 878.9 819.2 938.7 6.8 2.0 3.4 75.0 743.1 691.4 794.9 7.0 2.1 3.3 80.0 631.0 586.1 676.0 7.1 2.2 3.2 85.0 538.2 499.0 577.4 7.3 2.3 3.1 90.0 460.8 426.5 495.1 7.4 2.4 3.1 95.0 396.1 366.1 426.2 7.6 2.5 3.0 100.0 341.8 315.4 368.2 7.7 2.6 2.9 105.0 296.2 272.9 319.6 7.9 2.8 2.9 110.0 257.7 237.0 278.3 8.0 2.9 2.8 115.0 224.6 206.3 242.9 8.1 3.0 2.7 120.0 196.4 180.2 212.7 8.3 3.1 2.7 125.0 171.9 157.5 186.4 8.4 3.2 2.6 130.0 150.9 138.1 163.8 8.5 3.4 2.5 135.0 133.3 121.7 144.8 8.6 3.5 2.5 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 10 of 25 please read important notes and cautions and warnings at the end of this document.
b57891s0502j008 r/t no. 2003 t ( c) b 25/100 = 3980 k, r 25 = 5000 w , t r = 25 c, d r r /r r = 5% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 140.0 118.0 107.6 128.3 8.8 3.6 2.4 145.0 104.7 95.36 114.0 8.9 3.8 2.4 150.0 93.08 84.71 101.5 9.0 3.9 2.3 155.0 83.06 75.50 90.62 9.1 4.0 2.3 b57891s0103f008 r/t no. 4901 t ( c) b 25/100 = 3950 k, r 25 = 10000 w , t r = 25 c, d r r /r r = 1% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 55.0 878900 826970 930830 5.9 0.8 7.1 50.0 617590 583600 651570 5.5 0.8 6.9 45.0 439340 416870 461810 5.1 0.8 6.7 40.0 316180 301180 331180 4.7 0.7 6.5 35.0 230060 219970 240160 4.4 0.7 6.3 30.0 169150 162300 175990 4.0 0.7 6.1 25.0 125550 120880 130220 3.7 0.6 5.9 20.0 94143 90938 97349 3.4 0.6 5.7 15.0 71172 68964 73381 3.1 0.6 5.5 10.0 54308 52781 55836 2.8 0.5 5.4 5.0 41505 40454 42556 2.5 0.5 5.2 0.0 32014 31290 32738 2.3 0.4 5.0 5.0 25011 24510 25512 2.0 0.4 4.9 10.0 19691 19346 20036 1.8 0.4 4.7 15.0 15618 15382 15854 1.5 0.3 4.6 20.0 12474 12315 12633 1.3 0.3 4.5 25.0 10000 9900 10100 1.0 0.2 4.3 30.0 8080 7977 8182 1.3 0.3 4.2 35.0 6569 6472 6666 1.5 0.4 4.1 40.0 5372 5282 5462 1.7 0.4 4.0 45.0 4424 4340 4507 1.9 0.5 3.9 50.0 3661 3585 3737 2.1 0.6 3.8 55.0 3039 2971 3108 2.3 0.6 3.7 60.0 2536 2474 2598 2.4 0.7 3.6 65.0 2128 2073 2184 2.6 0.8 3.5 70.0 1794 1744 1844 2.8 0.8 3.4 75.0 1518 1474 1563 3.0 0.9 3.3 80.0 1290 1250 1330 3.1 1.0 3.2 85.0 1100 1064 1136 3.3 1.0 3.1 90.0 941.8 909.6 974.0 3.4 1.1 3.1 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 11 of 25 please read important notes and cautions and warnings at the end of this document.
b57891s0103f008 r/t no. 4901 t ( c) b 25/100 = 3950 k, r 25 = 10000 w , t r = 25 c, d r r /r r = 1% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 95.0 809.0 780.1 837.8 3.6 1.2 3.0 100.0 697.2 671.3 723.1 3.7 1.3 2.9 105.0 604.0 580.7 627.2 3.9 1.3 2.9 110.0 524.9 504.0 545.9 4.0 1.4 2.8 115.0 457.3 438.5 476.2 4.1 1.5 2.7 120.0 399.6 382.6 416.6 4.3 1.6 2.7 125.0 350.6 335.2 365.9 4.4 1.7 2.6 130.0 308.4 294.6 322.3 4.5 1.8 2.6 135.0 271.9 259.4 284.5 4.6 1.8 2.5 140.0 240.3 229.0 251.7 4.7 1.9 2.5 145.0 212.8 202.5 223.2 4.9 2.0 2.4 150.0 189.0 179.6 198.3 5.0 2.1 2.4 155.0 168.1 159.6 176.7 5.1 2.2 2.3 b57891s0103h008 r/t no. 4901 t ( c) b 25/100 = 3950 k, r 25 = 10000 w , t r = 25 c, d r r /r r = 3% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 55.0 878900 809390 948400 7.9 1.1 7.1 50.0 617590 571250 663930 7.5 1.1 6.9 45.0 439340 408080 470590 7.1 1.1 6.7 40.0 316180 294860 337500 6.7 1.0 6.5 35.0 230060 215370 244760 6.4 1.0 6.3 30.0 169150 158920 179380 6.0 1.0 6.1 25.0 125550 118370 132730 5.7 1.0 5.9 20.0 94143 89055 99232 5.4 0.9 5.7 15.0 71172 67540 74804 5.1 0.9 5.5 10.0 54308 51695 56922 4.8 0.9 5.4 5.0 41505 39624 43386 4.5 0.9 5.2 0.0 32014 30649 33378 4.3 0.8 5.0 5.0 25011 24010 26012 4.0 0.8 4.9 10.0 19691 18952 20429 3.8 0.8 4.7 15.0 15618 15070 16166 3.5 0.8 4.6 20.0 12474 12065 12882 3.3 0.7 4.5 25.0 10000 9700 10300 3.0 0.7 4.3 30.0 8080 7816 8344 3.3 0.8 4.2 35.0 6569 6340 6798 3.5 0.9 4.1 40.0 5372 5174 5570 3.7 0.9 4.0 45.0 4424 4252 4595 3.9 1.0 3.9 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 12 of 25 please read important notes and cautions and warnings at the end of this document.
b57891s0103h008 r/t no. 4901 t ( c) b 25/100 = 3950 k, r 25 = 10000 w , t r = 25 c, d r r /r r = 3% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 50.0 3661 3512 3810 4.1 1.1 3.8 55.0 3039 2910 3169 4.3 1.2 3.7 60.0 2536 2423 2649 4.4 1.2 3.6 65.0 2128 2030 2227 4.6 1.3 3.5 70.0 1794 1708 1880 4.8 1.4 3.4 75.0 1518 1443 1594 5.0 1.5 3.3 80.0 1290 1224 1356 5.1 1.6 3.2 85.0 1100 1042 1158 5.3 1.7 3.1 90.0 941.8 890.7 992.8 5.4 1.8 3.1 95.0 809.0 763.9 854.0 5.6 1.9 3.0 100.0 697.2 657.4 737.1 5.7 2.0 2.9 105.0 604.0 568.6 639.3 5.9 2.0 2.9 110.0 524.9 493.5 556.4 6.0 2.1 2.8 115.0 457.3 429.3 485.3 6.1 2.2 2.7 120.0 399.6 374.7 424.6 6.3 2.3 2.7 125.0 350.6 328.2 372.9 6.4 2.4 2.6 130.0 308.4 288.4 328.5 6.5 2.5 2.6 135.0 271.9 253.9 289.9 6.6 2.6 2.5 140.0 240.3 224.2 256.5 6.7 2.7 2.5 145.0 212.8 198.3 227.4 6.9 2.9 2.4 150.0 189.0 175.8 202.1 7.0 3.0 2.4 155.0 168.1 156.2 180.0 7.1 3.1 2.3 b57891s0103j008 r/t no. 4901 t ( c) b 25/100 = 3950 k, r 25 = 10000 w , t r = 25 c, d r r /r r = 5% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 55.0 878900 791810 965980 9.9 1.4 7.1 50.0 617590 558900 676280 9.5 1.4 6.9 45.0 439340 399290 479380 9.1 1.4 6.7 40.0 316180 288540 343830 8.7 1.3 6.5 35.0 230060 210760 249360 8.4 1.3 6.3 30.0 169150 155540 182760 8.0 1.3 6.1 25.0 125550 115860 135240 7.7 1.3 5.9 20.0 94143 87172 101110 7.4 1.3 5.7 15.0 71172 66117 76228 7.1 1.3 5.5 10.0 54308 50609 58008 6.8 1.3 5.4 5.0 41505 38794 44216 6.5 1.3 5.2 0.0 32014 30009 34019 6.3 1.2 5.0 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 13 of 25 please read important notes and cautions and warnings at the end of this document.
b57891s0103j008 r/t no. 4901 t ( c) b 25/100 = 3950 k, r 25 = 10000 w , t r = 25 c, d r r /r r = 5% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 5.0 25011 23509 26512 6.0 1.2 4.9 10.0 19691 18558 20823 5.8 1.2 4.7 15.0 15618 14758 16479 5.5 1.2 4.6 20.0 12474 11816 13132 5.3 1.2 4.5 25.0 10000 9500 10500 5.0 1.2 4.3 30.0 8080 7654 8506 5.3 1.3 4.2 35.0 6569 6209 6929 5.5 1.3 4.1 40.0 5372 5067 5677 5.7 1.4 4.0 45.0 4424 4163 4684 5.9 1.5 3.9 50.0 3661 3439 3883 6.1 1.6 3.8 55.0 3039 2849 3230 6.3 1.7 3.7 60.0 2536 2373 2699 6.4 1.8 3.6 65.0 2128 1987 2269 6.6 1.9 3.5 70.0 1794 1672 1916 6.8 2.0 3.4 75.0 1518 1413 1624 7.0 2.1 3.3 80.0 1290 1198 1382 7.1 2.2 3.2 85.0 1100 1020 1180 7.3 2.3 3.1 90.0 941.8 871.9 1012 7.4 2.4 3.1 95.0 809.0 747.7 870.2 7.6 2.5 3.0 100.0 697.2 643.4 751.0 7.7 2.6 2.9 105.0 604.0 556.5 651.4 7.9 2.8 2.9 110.0 524.9 483.0 566.9 8.0 2.9 2.8 115.0 457.3 420.2 494.5 8.1 3.0 2.7 120.0 399.6 366.7 432.6 8.3 3.1 2.7 125.0 350.6 321.2 380.0 8.4 3.2 2.6 130.0 308.4 282.2 334.7 8.5 3.3 2.6 135.0 271.9 248.5 295.4 8.6 3.4 2.5 140.0 240.3 219.3 261.3 8.7 3.6 2.5 145.0 212.8 194.0 231.7 8.9 3.7 2.4 150.0 189.0 172.0 205.9 9.0 3.8 2.4 155.0 168.1 152.9 183.4 9.1 3.9 2.3 b57891s0203f008 r/t no. 2904 t ( c) b 25/100 = 4300 k, r 25 = 20000 w , t r = 25 c, d r r /r r = 1% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 55.0 2429200 2275200 2583200 6.3 0.9 7.3 50.0 1688800 1589200 1788400 5.9 0.8 7.1 45.0 1184900 1120000 1249700 5.5 0.8 7.0 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 14 of 25 please read important notes and cautions and warnings at the end of this document.
b57891s0203f008 r/t no. 2904 t ( c) b 25/100 = 4300 k, r 25 = 20000 w , t r = 25 c, d r r /r r = 1% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 40.0 838770 796240 881300 5.1 0.7 6.9 35.0 598950 570900 627000 4.7 0.7 6.7 30.0 431350 412750 449950 4.3 0.7 6.5 25.0 312810 300440 325190 4.0 0.6 6.3 20.0 229310 221030 237600 3.6 0.6 6.2 15.0 169020 163470 174570 3.3 0.5 6.0 10.0 125850 122120 129590 3.0 0.5 5.8 5.0 94153 91646 96661 2.7 0.5 5.6 0.0 71126 69440 72812 2.4 0.4 5.5 5.0 54237 53105 55369 2.1 0.4 5.3 10.0 41719 40963 42476 1.8 0.4 5.2 15.0 32409 31906 32911 1.6 0.3 5.0 20.0 25367 25038 25696 1.3 0.3 4.9 25.0 20000 19800 20200 1.0 0.2 4.7 30.0 15884 15679 16089 1.3 0.3 4.6 35.0 12654 12461 12846 1.5 0.3 4.5 40.0 10148 9971 10325 1.7 0.4 4.3 45.0 8205 8045 8366 2.0 0.5 4.2 50.0 6673 6528 6817 2.2 0.5 4.1 55.0 5449 5320 5578 2.4 0.6 4.0 60.0 4474 4359 4589 2.6 0.7 3.9 65.0 3692 3590 3794 2.8 0.7 3.8 70.0 3061 2971 3151 2.9 0.8 3.7 75.0 2551 2471 2631 3.1 0.9 3.6 80.0 2135 2065 2206 3.3 0.9 3.5 85.0 1799 1736 1861 3.5 1.0 3.4 90.0 1521 1466 1577 3.6 1.1 3.3 95.0 1290 1242 1339 3.8 1.2 3.2 100.0 1099 1055 1142 3.9 1.2 3.2 105.0 940.1 901.5 978.6 4.1 1.3 3.1 110.0 807.2 772.9 841.5 4.2 1.4 3.0 115.0 694.9 664.3 725.4 4.4 1.5 3.0 120.0 600.1 572.9 627.3 4.5 1.6 2.9 125.0 520.1 495.8 544.4 4.7 1.7 2.8 130.0 452.2 430.4 473.9 4.8 1.7 2.8 135.0 394.4 374.9 413.9 4.9 1.8 2.7 140.0 345.0 327.5 362.5 5.1 1.9 2.6 145.0 302.8 287.1 318.5 5.2 2.0 2.6 150.0 266.4 252.3 280.6 5.3 2.1 2.5 155.0 235.1 222.3 247.8 5.4 2.2 2.5 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 15 of 25 please read important notes and cautions and warnings at the end of this document.
B57891S0203H008 r/t no. 2904 t ( c) b 25/100 = 4300 k, r 25 = 20000 w , t r = 25 c, d r r /r r = 3% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 55.0 2429200 2226600 2631700 8.3 1.1 7.3 50.0 1688800 1555400 1822100 7.9 1.1 7.1 45.0 1184900 1096300 1273400 7.5 1.1 7.0 40.0 838770 779460 898080 7.1 1.0 6.9 35.0 598950 558920 638980 6.7 1.0 6.7 30.0 431350 404120 458570 6.3 1.0 6.5 25.0 312810 294180 331440 6.0 0.9 6.3 20.0 229310 216440 242190 5.6 0.9 6.2 15.0 169020 160090 177950 5.3 0.9 6.0 10.0 125850 119600 132110 5.0 0.9 5.8 5.0 94153 89762 98544 4.7 0.8 5.6 0.0 71126 68018 74234 4.4 0.8 5.5 5.0 54237 52021 56454 4.1 0.8 5.3 10.0 41719 40128 43311 3.8 0.7 5.2 15.0 32409 31258 33559 3.6 0.7 5.0 20.0 25367 24531 26203 3.3 0.7 4.9 25.0 20000 19400 20600 3.0 0.6 4.7 30.0 15884 15362 16406 3.3 0.7 4.6 35.0 12654 12208 13099 3.5 0.8 4.5 40.0 10148 9768 10528 3.7 0.9 4.3 45.0 8205 7881 8530 4.0 0.9 4.2 50.0 6673 6395 6951 4.2 1.0 4.1 55.0 5449 5211 5687 4.4 1.1 4.0 60.0 4474 4270 4678 4.6 1.2 3.9 65.0 3692 3516 3867 4.8 1.3 3.8 70.0 3061 2910 3212 4.9 1.3 3.7 75.0 2551 2420 2682 5.1 1.4 3.6 80.0 2135 2022 2249 5.3 1.5 3.5 85.0 1799 1700 1897 5.5 1.6 3.4 90.0 1521 1436 1607 5.6 1.7 3.3 95.0 1290 1216 1365 5.8 1.8 3.2 100.0 1099 1033 1164 5.9 1.9 3.2 105.0 940.1 882.7 997.4 6.1 2.0 3.1 110.0 807.2 756.7 857.6 6.2 2.1 3.0 115.0 694.9 650.4 739.3 6.4 2.2 3.0 120.0 600.1 560.9 639.3 6.5 2.3 2.9 125.0 520.1 485.4 554.8 6.7 2.4 2.8 130.0 452.2 421.4 482.9 6.8 2.5 2.8 135.0 394.4 367.0 421.8 6.9 2.6 2.7 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 16 of 25 please read important notes and cautions and warnings at the end of this document.
B57891S0203H008 r/t no. 2904 t ( c) b 25/100 = 4300 k, r 25 = 20000 w , t r = 25 c, d r r /r r = 3% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 140.0 345.0 320.6 369.4 7.1 2.7 2.6 145.0 302.8 281.0 324.5 7.2 2.8 2.6 150.0 266.4 246.9 285.9 7.3 2.9 2.5 155.0 235.1 217.6 252.5 7.4 3.0 2.5 b57891s0203j008 r/t no. 2904 t ( c) b 25/100 = 4300 k, r 25 = 20000 w , t r = 25 c, d r r /r r = 5% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 55.0 2429200 2178000 2680300 10.3 1.4 7.3 50.0 1688800 1521600 1855900 9.9 1.4 7.1 45.0 1184900 1072600 1297100 9.5 1.4 7.0 40.0 838770 762690 914850 9.1 1.3 6.9 35.0 598950 546940 650960 8.7 1.3 6.7 30.0 431350 395490 467200 8.3 1.3 6.5 25.0 312810 287920 337700 8.0 1.3 6.3 20.0 229310 211850 246770 7.6 1.2 6.2 15.0 169020 156710 181330 7.3 1.2 6.0 10.0 125850 117080 134620 7.0 1.2 5.8 5.0 94153 87879 100430 6.7 1.2 5.6 0.0 71126 66595 75657 6.4 1.2 5.5 5.0 54237 50936 57539 6.1 1.1 5.3 10.0 41719 39294 44145 5.8 1.1 5.2 15.0 32409 30610 34208 5.6 1.1 5.0 20.0 25367 24024 26710 5.3 1.1 4.9 25.0 20000 19000 21000 5.0 1.1 4.7 30.0 15884 15044 16724 5.3 1.2 4.6 35.0 12654 11955 13352 5.5 1.2 4.5 40.0 10148 9565 10731 5.7 1.3 4.3 45.0 8205 7717 8694 6.0 1.4 4.2 50.0 6673 6261 7084 6.2 1.5 4.1 55.0 5449 5102 5796 6.4 1.6 4.0 60.0 4474 4180 4768 6.6 1.7 3.9 65.0 3692 3442 3941 6.8 1.8 3.8 70.0 3061 2848 3273 6.9 1.9 3.7 75.0 2551 2369 2733 7.1 2.0 3.6 80.0 2135 1980 2291 7.3 2.1 3.5 85.0 1799 1664 1933 7.5 2.2 3.4 90.0 1521 1405 1637 7.6 2.3 3.3 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 17 of 25 please read important notes and cautions and warnings at the end of this document.
b57891s0203j008 r/t no. 2904 t ( c) b 25/100 = 4300 k, r 25 = 20000 w , t r = 25 c, d r r /r r = 5% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 95.0 1290 1190 1391 7.8 2.4 3.2 100.0 1099 1011 1186 7.9 2.5 3.2 105.0 940.1 863.9 1016 8.1 2.6 3.1 110.0 807.2 740.6 873.8 8.2 2.7 3.0 115.0 694.9 636.5 753.2 8.4 2.8 3.0 120.0 600.1 548.9 651.4 8.5 3.0 2.9 125.0 520.1 475.0 565.2 8.7 3.1 2.8 130.0 452.2 412.4 492.0 8.8 3.2 2.8 135.0 394.4 359.2 429.7 8.9 3.3 2.7 140.0 345.0 313.7 376.3 9.1 3.4 2.6 145.0 302.8 275.0 330.6 9.2 3.5 2.6 150.0 266.4 241.6 291.2 9.3 3.7 2.5 155.0 235.1 212.9 257.2 9.4 3.8 2.5 b57891s0104f008 r/t no. 4003 t ( c) b 25/100 = 4450 k, r 25 = 100000 w , t r = 25 c, d r r /r r = 1% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 55.0 10381000 9704000 11058000 6.5 1.0 6.8 50.0 7370700 6923600 7817900 6.1 0.9 6.7 45.0 5272300 4975500 5569100 5.6 0.8 6.6 40.0 3798800 3600800 3996700 5.2 0.8 6.5 35.0 2756500 2623900 2889100 4.8 0.8 6.4 30.0 2014200 1925100 2103400 4.4 0.7 6.2 25.0 1480100 1420100 1540200 4.1 0.7 6.1 20.0 1097600 1056900 1138200 3.7 0.6 6.0 15.0 817440 789950 844930 3.4 0.6 5.8 10.0 614070 595430 632710 3.0 0.5 5.7 5.0 463310 450710 475910 2.7 0.5 5.5 0.0 352440 343920 360950 2.4 0.4 5.4 5.0 269950 264220 275680 2.1 0.4 5.3 10.0 208310 204480 212140 1.8 0.4 5.1 15.0 161890 159350 164430 1.6 0.3 5.0 20.0 126660 125010 128320 1.3 0.3 4.9 25.0 100000 99000 101000 1.0 0.2 4.8 30.0 78351 77336 79367 1.3 0.3 4.6 35.0 62372 61415 63329 1.5 0.3 4.5 40.0 49937 49056 50818 1.8 0.4 4.4 45.0 40218 39419 41018 2.0 0.5 4.3 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 18 of 25 please read important notes and cautions and warnings at the end of this document.
b57891s0104f008 r/t no. 4003 t ( c) b 25/100 = 4450 k, r 25 = 100000 w , t r = 25 c, d r r /r r = 1% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 50.0 32557 31839 33275 2.2 0.5 4.2 55.0 26402 25765 27040 2.4 0.6 4.1 60.0 21527 20964 22091 2.6 0.7 4.0 65.0 17693 17195 18191 2.8 0.7 3.9 70.0 14616 14176 15055 3.0 0.8 3.8 75.0 12097 11710 12483 3.2 0.9 3.8 80.0 10053 9714 10393 3.4 0.9 3.7 85.0 8376 8079 8673 3.6 1.0 3.6 90.0 7004 6743 7265 3.7 1.1 3.5 95.0 5894 5665 6123 3.9 1.1 3.4 100.0 4978 4776 5179 4.0 1.2 3.4 105.0 4215 4037 4392 4.2 1.3 3.3 110.0 3580 3424 3736 4.4 1.3 3.2 115.0 3050 2913 3188 4.5 1.4 3.2 120.0 2607 2485 2728 4.7 1.5 3.1 125.0 2233 2126 2340 4.8 1.6 3.0 130.0 1919 1824 2013 4.9 1.7 3.0 135.0 1652 1568 1735 5.1 1.7 2.9 140.0 1425 1351 1499 5.2 1.8 2.9 145.0 1237 1171 1303 5.3 1.9 2.8 150.0 1076 1017 1134 5.5 2.0 2.8 155.0 939.3 886.9 991.8 5.6 2.1 2.7 b57891s0104h008 r/t no. 4003 t ( c) b 25/100 = 4450 k, r 25 = 100000 w , t r = 25 c, d r r /r r = 3% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 55.0 10381000 9496300 11266000 8.5 1.2 6.8 50.0 7370700 6776200 7965300 8.1 1.2 6.7 45.0 5272300 4870100 5674500 7.6 1.2 6.6 40.0 3798800 3524800 4072700 7.2 1.1 6.5 35.0 2756500 2568800 2944300 6.8 1.1 6.4 30.0 2014200 1884800 2143700 6.4 1.0 6.2 25.0 1480100 1390500 1569800 6.1 1.0 6.1 20.0 1097600 1035000 1160200 5.7 1.0 6.0 15.0 817440 773600 861280 5.4 0.9 5.8 10.0 614070 583150 644990 5.0 0.9 5.7 5.0 463310 441440 485180 4.7 0.9 5.5 0.0 352440 336870 368000 4.4 0.8 5.4 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 19 of 25 please read important notes and cautions and warnings at the end of this document.
b57891s0104h008 r/t no. 4003 t ( c) b 25/100 = 4450 k, r 25 = 100000 w , t r = 25 c, d r r /r r = 3% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 5.0 269950 258820 281080 4.1 0.8 5.3 10.0 208310 200310 216310 3.8 0.7 5.1 15.0 161890 156120 167670 3.6 0.7 5.0 20.0 126660 122480 130850 3.3 0.7 4.9 25.0 100000 97000 103000 3.0 0.6 4.8 30.0 78351 75769 80934 3.3 0.7 4.6 35.0 62372 60168 64577 3.5 0.8 4.5 40.0 49937 48057 51817 3.8 0.9 4.4 45.0 40218 38614 41822 4.0 0.9 4.3 50.0 32557 31188 33926 4.2 1.0 4.2 55.0 26402 25237 27568 4.4 1.1 4.1 60.0 21527 20533 22521 4.6 1.1 4.0 65.0 17693 16841 18545 4.8 1.2 3.9 70.0 14616 13884 15347 5.0 1.3 3.8 75.0 12097 11468 12725 5.2 1.4 3.8 80.0 10053 9513 10594 5.4 1.5 3.7 85.0 8376 7911 8841 5.6 1.5 3.6 90.0 7004 6603 7405 5.7 1.6 3.5 95.0 5894 5547 6241 5.9 1.7 3.4 100.0 4978 4677 5279 6.0 1.8 3.4 105.0 4215 3953 4476 6.2 1.9 3.3 110.0 3580 3353 3808 6.4 2.0 3.2 115.0 3050 2852 3249 6.5 2.1 3.2 120.0 2607 2433 2780 6.7 2.1 3.1 125.0 2233 2081 2385 6.8 2.2 3.0 130.0 1919 1785 2052 6.9 2.3 3.0 135.0 1652 1535 1768 7.1 2.4 2.9 140.0 1425 1323 1528 7.2 2.5 2.9 145.0 1237 1146 1327 7.3 2.6 2.8 150.0 1076 995.5 1156 7.5 2.7 2.8 155.0 939.3 868.1 1011 7.6 2.8 2.7 b57891s0104j008 r/t no. 4003 t ( c) b 25/100 = 4450 k, r 25 = 100000 w , t r = 25 c, d r r /r r = 5% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 55.0 10381000 9288700 11474000 10.5 1.5 6.8 50.0 7370700 6628800 8112700 10.1 1.5 6.7 45.0 5272300 4764600 5780000 9.6 1.5 6.6 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 20 of 25 please read important notes and cautions and warnings at the end of this document.
b57891s0104j008 r/t no. 4003 t ( c) b 25/100 = 4450 k, r 25 = 100000 w , t r = 25 c, d r r /r r = 5% r nom [ w ] r min [ w ] r max [ w ] d r r /r r [ %] d t[ c] a (%/k) 40.0 3798800 3448800 4148700 9.2 1.4 6.5 35.0 2756500 2513700 2999400 8.8 1.4 6.4 30.0 2014200 1844500 2184000 8.4 1.4 6.2 25.0 1480100 1360900 1599400 8.1 1.3 6.1 20.0 1097600 1013000 1182100 7.7 1.3 6.0 15.0 817440 757260 877630 7.4 1.3 5.8 10.0 614070 570870 657270 7.0 1.2 5.7 5.0 463310 432180 494440 6.7 1.2 5.5 0.0 352440 329820 375050 6.4 1.2 5.4 5.0 269950 253420 286480 6.1 1.2 5.3 10.0 208310 196140 220480 5.8 1.1 5.1 15.0 161890 152880 170910 5.6 1.1 5.0 20.0 126660 119940 133380 5.3 1.1 4.9 25.0 100000 95000 105000 5.0 1.1 4.8 30.0 78351 74201 82501 5.3 1.1 4.6 35.0 62372 58920 65824 5.5 1.2 4.5 40.0 49937 47058 52816 5.8 1.3 4.4 45.0 40218 37810 42627 6.0 1.4 4.3 50.0 32557 30537 34577 6.2 1.5 4.2 55.0 26402 24709 28096 6.4 1.6 4.1 60.0 21527 20103 22952 6.6 1.6 4.0 65.0 17693 16487 18899 6.8 1.7 3.9 70.0 14616 13591 15640 7.0 1.8 3.8 75.0 12097 11226 12967 7.2 1.9 3.8 80.0 10053 9312 10795 7.4 2.0 3.7 85.0 8376 7744 9009 7.6 2.1 3.6 90.0 7004 6463 7545 7.7 2.2 3.5 95.0 5894 5429 6359 7.9 2.3 3.4 100.0 4978 4577 5378 8.0 2.4 3.4 105.0 4215 3869 4561 8.2 2.5 3.3 110.0 3580 3281 3880 8.4 2.6 3.2 115.0 3050 2791 3310 8.5 2.7 3.2 120.0 2607 2381 2832 8.7 2.8 3.1 125.0 2233 2037 2430 8.8 2.9 3.0 130.0 1919 1747 2090 8.9 3.0 3.0 135.0 1652 1502 1801 9.1 3.1 2.9 140.0 1425 1294 1556 9.2 3.2 2.9 145.0 1237 1121 1352 9.3 3.3 2.8 150.0 1076 974.0 1178 9.5 3.4 2.8 155.0 939.3 849.3 1029 9.6 3.5 2.7 temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 21 of 25 please read important notes and cautions and warnings at the end of this document.
temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 22 of 25 please read important notes and cautions and warnings at the end of this document.
cautions and warnings general see "important notes" at the end of this document. storage store thermistors only in original packaging. do not open the package before storage. storage conditions in original packaging: storage temperature 25 c ... +45 c, relative humidity 75% annual mean, maximum 95%, dew precipitation is inadmissible. do not store smds where they are exposed to heat or direct sunlight. otherwise, the packing material may be deformed or smds may stick together, causing problems during mounting. avoid contamination of thermistors surface during storage, handling and processing. avoid storage of thermistor in harmful environments like corrosive gases (sox, cl etc). after opening the factory seals, such as polyvinyl-sealed packages, use the smds as soon as possible. solder thermistors after shipment from epcos within the time specified: smds: 12 months leaded components: 24 months handling ntc thermistors must not be dropped. chip-offs must not be caused during handling of ntcs. components must not be touched with bare hands. gloves are recommended. avoid contamination of thermistor surface during handling. soldering use resin-type flux or non-activated flux. insufficient preheating may cause ceramic cracks. rapid cooling by dipping in solvent is not recommended. complete removal of flux is recommended. mounting when ntc thermistors are encapsulated with sealing material or overmolded with plastic material, the precautions given in chapter ?mounting instructions?, ?sealing, potting and overmolding? must be observed. electrode must not be scratched before/during/after the mounting process. contacts and housings used for assembly with thermistor have to be clean before mounting. during operation, the thermistor?s surface temperature can be very high (icl). ensure that adjacent components are placed at a sufficient distance from the thermistor to allow for proper cooling ot the thermistors. ensure that adjacent materials are designed for operation at temperatures comparable to the surface temperature of the thermistor. be sure that surrounding parts and materials can withstand this temperature. make sure that thermistors (icls) are adequately ventilated to avoid overheating. avoid contamination of thermistor surface during processing. temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 23 of 25 please read important notes and cautions and warnings at the end of this document.
operation use thermistors only within the specified operating temperature range. use thermistors only within the specified voltage and current ranges (icls). environmental conditions must not harm the thermistors. use thermistors only in normal atmospheric conditions. contact of ntc thermistors with any liquids and solvents should be prevented. it must be ensured that no water enters the ntc thermistor (e.g. through plug terminals). for measurement purposes (checking the specified resistance vs. temperature), the component must not be immersed in water but in suitable liquids (e.g. galden). avoid dewing and condensation. be sure to provide an appropriate fail-safe function to prevent secondary product damage caused by malfunction (e.g. use vdr for limitation of overvoltage condition). temperature measurement b57891 leaded ntcs, lead spacing 2.5 mm s891 page 24 of 25 please read important notes and cautions and warnings at the end of this document.
the following applies to all products named in this publication: 1. some parts of this publication contain statements about the suitability of our products for certain areas of application . these statements are based on our knowledge of typical re- quirements that are often placed on our products in the areas of application concerned. we nevertheless expressly point out that such statements cannot be regarded as binding statements about the suitability of our products for a particular customer application . as a rule, epcos is either unfamiliar with individual customer applications or less familiar with them than the customers themselves. for these reasons, it is always ultimately incum- bent on the customer to check and decide whether an epcos product with the properties de- scribed in the product specification is suitable for use in a particular customer application. 2. we also point out that in individual cases, a malfunction of passive electronic compon- ents or failure before the end of their usual service life cannot be completely ruled out in the current state of the art, even if they are operated as specified . in customer applica- tions requiring a very high level of operational safety and especially in customer applications in which the malfunction or failure of a passive electronic component could endanger human life or health (e.g. in accident prevention or life-saving systems), it must therefore be ensured by means of suitable design of the customer application or other action taken by the customer (e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by third parties in the event of malfunction or failure of a passive electronic component. 3. the warnings, cautions and product-specific notes must be observed . 4. in order to satisfy certain technical requirements, some of the products described in this publication may contain substances subject to restrictions in certain jurisdictions (e.g. because they are classed as ?hazardous?) . useful information on this will be found in our material data sheets on the internet (www.epcos.com/material). should you have any more detailed questions, please contact our sales offices. 5. we constantly strive to improve our products. consequently, the products described in this publication may change from time to time . the same is true of the corresponding product specifications. please check therefore to what extent product descriptions and specifications contained in this publication are still applicable before or when you place an or- der. we also reserve the right to discontinue production and delivery of products . con- sequently, we cannot guarantee that all products named in this publication will always be available. 6. unless otherwise agreed in individual contracts, all orders are subject to the current ver- sion of the ?general terms of delivery for products and services in the electrical in- dustry? published by the german electrical and electronics industry association (zvei) . 7. the trade names epcos, epcos-jones, baoke, ceradiode, cssp, mlsc, phasecap, phasemod, sifi, sikorel, silvercap, simid, siov, sip5d, sip5k, ultracap, windcap are trademarks registered or pending in europe and in other countries. further information will be found on the internet at www.epcos.com/trademarks. important notes page 25 of 25

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