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ntc thermistors for temperature measurement smd ntc thermistors with nickel barrier termination, case size 0402 series/type: b572**v 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.
1) depends on mounting situation applications temperature measurement and compensation in mobile phone applications (e.g. battery pack, tcxo, lcd) data systems automotive electronics features multilayer smd ntc with inner electrodes excellent long-term ageing stability in high-temperature and high-humidity environment superior resistance stability during soldering (change <1%) options alternative resistance ratings, resistance tolerance and b value tolerances available on request delivery mode cardboard tape, 180-mm reel dimensional drawing dimensions in mm approx. weight 4.5 mg general technical data climatic category (iec 60068-1) 55/125/56 max. power (at 25 c, on pcb) p 25 1) 150 mw resistance tolerance d r r /r r 5 % rated temperature t r 25 c dissipation factor (on pcb) d th 1) approx. 2.5 mw/k thermal cooling time constant (on pcb) t c 1) approx. 3 s heat capacity c th 1) approx. 7.5 mj/k temperature measurement b572**v smds with nickel barrier termination, case size 0402 v2** page 2 of 14 please read important notes and cautions and warnings at the end of this document.
electrical specification and ordering codes r 25 w no. of r/t characteristic b 25/50 k b 25/85 k b 25/100 k ordering code 470 8501 3500 3540 3550 3% b57211v2471j060 3.3 k 8502 3940 3980 4000 3% B57221V2332J060 4.7 k 8501 3500 3540 3550 3% b57211v2472j060 4.7 k 8502 3940 3980 4000 3% b57221v2472j060 10 k 8502 3940 3980 4000 3% b57221v2103j060 22 k 8506 4473 4548 4575 3% b57261v2223j060 33 k 8506 4473 4548 4575 3% b57261v2333j060 47 k 8502 3940 3980 4000 3% b57221v2473j060 reliability data smd ntc thermistors are tested in accordance with iec 60068. the parts are mounted on a standardized pcb in accordance with iec 60539-1. test standard test conditions d r 25 /r 25 (typical) remarks storage in dry heat iec 60068-2-2 jis c 0021 storage at upper category temperature t: (125 2) c t: 1000 h < 2% storage in damp heat, steady state iec 60068-2-78 jis c 0022 temperature of air: (40 2) c relative humidity of air: (93 +2/ 3)% duration: 56 days < 2% rapid temperature cycling iec 60068-2-14 jis c 0025 lower test temperature: 55 c upper test temperature: 125 c number of cycles: 100 < 2% endurance p max : 150 mw t: (65 2) c t: 1000 h < 2% solderability iec 60068-2-58 jis c 0054 solderability: (215 3) c, (3 0.3) s (235 5) c, (2 0.2) s resistance to soldering heat: (260 5) c, (10 1) s 95% of terminations wetted resistance drift after soldering reflow soldering profile < 1% temperature measurement b572**v smds with nickel barrier termination, case size 0402 v2** page 3 of 14 please read important notes and cautions and warnings at the end of this document.
r/t characteristics b57211v2471j060 r/t no. 8501 t ( c) b 25/100 = 3550 k, r 25 = 470 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 26618 21787 31449 18.1 2.8 6.5 50.0 19333 16035 22630 17.1 2.7 6.3 45.0 14198 11925 16471 16.0 2.6 6.1 40.0 10537 8956 12119 15.0 2.6 5.9 35.0 7899 6790 9009 14.0 2.5 5.7 30.0 5979 5194 6764 13.1 2.4 5.5 25.0 4566 4007 5126 12.2 2.3 5.3 20.0 3518 3117 3919 11.4 2.2 5.1 15.0 2733 2444 3022 10.6 2.1 5.0 10.0 2140 1930 2350 9.8 2.0 4.8 5.0 1689 1536 1842 9.0 1.9 4.7 0.0 1342 1231 1454 8.3 1.8 4.5 5.0 1074 992.4 1156 7.6 1.7 4.4 10.0 865.6 805.5 925.7 6.9 1.6 4.3 15.0 701.9 657.7 746.0 6.3 1.5 4.1 20.0 572.7 540.3 605.1 5.7 1.4 4.0 25.0 470.0 446.5 493.5 5.0 1.3 3.9 30.0 387.9 366.0 409.8 5.6 1.5 3.8 35.0 321.9 301.9 341.9 6.2 1.7 3.7 40.0 268.6 250.4 286.7 6.8 1.9 3.6 45.0 225.2 208.7 241.6 7.3 2.1 3.5 50.0 189.7 174.9 204.5 7.8 2.3 3.4 55.0 160.5 147.2 173.9 8.3 2.5 3.3 60.0 136.5 124.5 148.5 8.8 2.7 3.2 65.0 116.5 105.7 127.3 9.3 3.0 3.1 70.0 99.92 90.19 109.6 9.7 3.2 3.0 75.0 86.01 77.25 94.76 10.2 3.4 3.0 80.0 74.32 66.43 82.21 10.6 3.7 2.9 85.0 64.46 57.35 71.57 11.0 3.9 2.8 90.0 56.11 49.69 62.53 11.4 4.2 2.7 95.0 49.01 43.20 54.81 11.8 4.4 2.7 100.0 42.95 37.69 48.20 12.2 4.7 2.6 105.0 37.76 33.00 42.52 12.6 5.0 2.5 110.0 33.30 28.98 37.62 13.0 5.2 2.5 115.0 29.45 25.53 33.38 13.3 5.5 2.4 120.0 26.13 22.55 29.70 13.7 5.8 2.4 125.0 23.24 19.98 26.50 14.0 6.1 2.3 temperature measurement b572**v smds with nickel barrier termination, case size 0402 v2** page 4 of 14 please read important notes and cautions and warnings at the end of this document.
B57221V2332J060 r/t no. 8502 t ( c) b 25/100 = 4000 k, r 25 = 3300 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 317320 254460 380180 19.8 2.7 7.4 50.0 220740 179730 261750 18.6 2.6 7.1 45.0 155520 128460 182580 17.4 2.5 6.9 40.0 110900 92856 128950 16.3 2.4 6.6 35.0 80000 67848 92153 15.2 2.4 6.4 30.0 58349 50090 66607 14.2 2.3 6.2 25.0 43006 37346 48665 13.2 2.2 6.0 20.0 32017 28109 35924 12.2 2.1 5.8 15.0 24065 21349 26781 11.3 2.0 5.6 10.0 18254 16355 20153 10.4 1.9 5.4 5.0 13967 12633 15302 9.6 1.8 5.3 0.0 10777 9836 11718 8.7 1.7 5.1 5.0 8382 7716 9048 7.9 1.6 4.9 10.0 6569 6097 7041 7.2 1.5 4.8 15.0 5186 4852 5521 6.4 1.4 4.7 20.0 4123 3887 4360 5.7 1.3 4.5 25.0 3300 3135 3465 5.0 1.1 4.4 30.0 2658 2506 2810 5.7 1.3 4.3 35.0 2154 2018 2291 6.4 1.5 4.1 40.0 1757 1634 1879 7.0 1.7 4.0 45.0 1440 1331 1549 7.6 1.9 3.9 50.0 1187 1090 1284 8.2 2.1 3.8 55.0 984.0 898.1 1070 8.7 2.4 3.7 60.0 819.6 743.6 895.7 9.3 2.6 3.6 65.0 686.0 618.7 753.3 9.8 2.8 3.5 70.0 576.8 517.2 636.4 10.3 3.0 3.4 75.0 487.2 434.4 540.0 10.8 3.2 3.3 80.0 413.3 366.5 460.0 11.3 3.5 3.2 85.0 352.0 310.5 393.5 11.8 3.7 3.2 90.0 301.1 264.2 337.9 12.3 4.0 3.1 95.0 258.5 225.6 291.3 12.7 4.2 3.0 100.0 222.7 193.4 252.0 13.1 4.5 2.9 105.0 192.6 166.5 218.7 13.6 4.7 2.9 110.0 167.1 143.8 190.5 14.0 5.0 2.8 115.0 145.5 124.6 166.5 14.4 5.3 2.7 120.0 127.1 108.3 145.9 14.8 5.5 2.7 125.0 111.4 94.50 128.3 15.2 5.8 2.6 temperature measurement b572**v smds with nickel barrier termination, case size 0402 v2** page 5 of 14 please read important notes and cautions and warnings at the end of this document.
b57211v2472j060 r/t no. 8501 t ( c) b 25/100 = 3550 k, r 25 = 4700 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 266180 217870 314490 18.1 2.8 6.5 50.0 193330 160360 226300 17.1 2.7 6.3 45.0 141980 119250 164710 16.0 2.6 6.1 40.0 105380 89559 121190 15.0 2.6 5.9 35.0 78994 67896 90092 14.0 2.5 5.7 30.0 59786 51937 67636 13.1 2.4 5.5 25.0 45663 40071 51256 12.2 2.3 5.3 20.0 35181 31171 39192 11.4 2.2 5.1 15.0 27331 24438 30224 10.6 2.1 5.0 10.0 21402 19305 23500 9.8 2.0 4.8 5.0 16888 15360 18415 9.0 1.9 4.7 0.0 13422 12306 14539 8.3 1.8 4.5 5.0 10743 9924 11561 7.6 1.7 4.4 10.0 8656 8055 9257 6.9 1.6 4.3 15.0 7019 6577 7460 6.3 1.5 4.1 20.0 5727 5403 6051 5.7 1.4 4.0 25.0 4700 4465 4935 5.0 1.3 3.9 30.0 3879 3660 4098 5.6 1.5 3.8 35.0 3219 3019 3419 6.2 1.7 3.7 40.0 2686 2504 2867 6.8 1.9 3.6 45.0 2252 2087 2416 7.3 2.1 3.5 50.0 1897 1749 2045 7.8 2.3 3.4 55.0 1605 1472 1739 8.3 2.5 3.3 60.0 1365 1245 1485 8.8 2.7 3.2 65.0 1165 1057 1273 9.3 3.0 3.1 70.0 999.2 901.9 1096 9.7 3.2 3.0 75.0 860.1 772.5 947.6 10.2 3.4 3.0 80.0 743.2 664.3 822.1 10.6 3.7 2.9 85.0 644.6 573.5 715.7 11.0 3.9 2.8 90.0 561.1 496.9 625.3 11.4 4.2 2.7 95.0 490.1 432.0 548.1 11.8 4.4 2.7 100.0 429.5 376.9 482.0 12.2 4.7 2.6 105.0 377.6 330.0 425.2 12.6 5.0 2.5 110.0 333.0 289.8 376.2 13.0 5.2 2.5 115.0 294.5 255.3 333.8 13.3 5.5 2.4 120.0 261.3 225.5 297.0 13.7 5.8 2.4 125.0 232.4 199.8 265.0 14.0 6.1 2.3 temperature measurement b572**v smds with nickel barrier termination, case size 0402 v2** page 6 of 14 please read important notes and cautions and warnings at the end of this document.
b57221v2472j060 r/t no. 8502 t ( c) b 25/100 = 4000 k, r 25 = 4700 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 451940 362410 541470 19.8 2.7 7.4 50.0 314390 255990 372800 18.6 2.6 7.1 45.0 221500 182960 260030 17.4 2.5 6.9 40.0 157950 132250 183650 16.3 2.4 6.6 35.0 113940 96632 131250 15.2 2.4 6.4 30.0 83102 71340 94865 14.2 2.3 6.2 25.0 61251 53190 69311 13.2 2.2 6.0 20.0 45599 40034 51165 12.2 2.1 5.8 15.0 34274 30406 38142 11.3 2.0 5.6 10.0 25998 23293 28702 10.4 1.9 5.4 5.0 19893 17992 21793 9.6 1.8 5.3 0.0 15349 14008 16690 8.7 1.7 5.1 5.0 11938 10990 12886 7.9 1.6 4.9 10.0 9356 8684 10028 7.2 1.5 4.8 15.0 7386 6910 7863 6.4 1.4 4.7 20.0 5872 5535 6209 5.7 1.3 4.5 25.0 4700 4465 4935 5.0 1.1 4.4 30.0 3786 3570 4002 5.7 1.3 4.3 35.0 3069 2873 3264 6.4 1.5 4.1 40.0 2502 2327 2676 7.0 1.7 4.0 45.0 2051 1896 2207 7.6 1.9 3.9 50.0 1691 1553 1829 8.2 2.1 3.8 55.0 1402 1279 1524 8.7 2.4 3.7 60.0 1167 1059 1276 9.3 2.6 3.6 65.0 977.0 881.2 1073 9.8 2.8 3.5 70.0 821.5 736.7 906.4 10.3 3.0 3.4 75.0 693.9 618.7 769.0 10.8 3.2 3.3 80.0 588.6 522.0 655.2 11.3 3.5 3.2 85.0 501.4 442.2 560.5 11.8 3.7 3.2 90.0 428.8 376.2 481.3 12.3 4.0 3.1 95.0 368.1 321.3 414.9 12.7 4.2 3.0 100.0 317.2 275.5 358.9 13.1 4.5 2.9 105.0 274.3 237.1 311.5 13.6 4.7 2.9 110.0 238.0 204.8 271.3 14.0 5.0 2.8 115.0 207.3 177.5 237.1 14.4 5.3 2.7 120.0 181.0 154.3 207.8 14.8 5.5 2.7 125.0 158.6 134.6 182.7 15.2 5.8 2.6 temperature measurement b572**v smds with nickel barrier termination, case size 0402 v2** page 7 of 14 please read important notes and cautions and warnings at the end of this document.
b57221v2103j060 r/t no. 8502 t ( c) b 25/100 = 4000 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 961580 771090 1152100 19.8 2.7 7.4 50.0 668920 544650 793180 18.6 2.6 7.1 45.0 471270 389270 553260 17.4 2.5 6.9 40.0 336060 281380 390740 16.3 2.4 6.6 35.0 242430 205600 279250 15.2 2.4 6.4 30.0 176810 151790 201840 14.2 2.3 6.2 25.0 130320 113170 147470 13.2 2.2 6.0 20.0 97020 85179 108860 12.2 2.1 5.8 15.0 72923 64693 81153 11.3 2.0 5.6 10.0 55314 49560 61068 10.4 1.9 5.4 5.0 42325 38282 46368 9.6 1.8 5.3 0.0 32657 29805 35510 8.7 1.7 5.1 5.0 25400 23382 27418 7.9 1.6 4.9 10.0 19907 18477 21336 7.2 1.5 4.8 15.0 15716 14703 16729 6.4 1.4 4.7 20.0 12494 11778 13211 5.7 1.3 4.5 25.0 10000 9500 10500 5.0 1.1 4.4 30.0 8055 7595 8515 5.7 1.3 4.3 35.0 6529 6114 6944 6.4 1.5 4.1 40.0 5323 4951 5694 7.0 1.7 4.0 45.0 4364 4034 4695 7.6 1.9 3.9 50.0 3598 3304 3892 8.2 2.1 3.8 55.0 2982 2722 3242 8.7 2.4 3.7 60.0 2484 2253 2714 9.3 2.6 3.6 65.0 2079 1875 2283 9.8 2.8 3.5 70.0 1748 1567 1928 10.3 3.0 3.4 75.0 1476 1316 1636 10.8 3.2 3.3 80.0 1252 1111 1394 11.3 3.5 3.2 85.0 1067 940.9 1193 11.8 3.7 3.2 90.0 912.3 800.5 1024 12.3 4.0 3.1 95.0 783.2 683.7 882.7 12.7 4.2 3.0 100.0 674.9 586.2 763.6 13.1 4.5 2.9 105.0 583.6 504.5 662.8 13.6 4.7 2.9 110.0 506.5 435.7 577.3 14.0 5.0 2.8 115.0 441.0 377.6 504.4 14.4 5.3 2.7 120.0 385.2 328.3 442.1 14.8 5.5 2.7 125.0 337.5 286.4 388.7 15.2 5.8 2.6 temperature measurement b572**v smds with nickel barrier termination, case size 0402 v2** page 8 of 14 please read important notes and cautions and warnings at the end of this document.
b57261v2223j060 r/t no. 8506 t ( c) b 25/100 = 4575 k, r 25 = 22000 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 3401300 2655300 4147300 21.9 2.7 8.0 50.0 2296100 1824900 2767300 20.5 2.7 7.7 45.0 1569900 1268900 1871000 19.2 2.6 7.5 40.0 1086500 892190 1280800 17.9 2.5 7.2 35.0 760630 634000 887260 16.6 2.4 7.0 30.0 538370 455130 621620 15.5 2.3 6.8 25.0 385080 329910 440240 14.3 2.2 6.6 20.0 278200 241390 315020 13.2 2.1 6.4 15.0 202930 178210 227650 12.2 2.0 6.2 10.0 149390 132700 166080 11.2 1.9 6.0 5.0 110950 99635 122270 10.2 1.7 5.9 0.0 83105 75406 90803 9.3 1.6 5.7 5.0 62755 57508 68001 8.4 1.5 5.5 10.0 47760 44183 51336 7.5 1.4 5.4 15.0 36622 34188 39057 6.6 1.3 5.2 20.0 28286 26635 29937 5.8 1.1 5.1 25.0 22000 20900 23100 5.0 1.0 5.0 30.0 17226 16225 18227 5.8 1.2 4.8 35.0 13576 12687 14464 6.5 1.4 4.7 40.0 10766 9984 11547 7.3 1.6 4.6 45.0 8589 7906 9271 7.9 1.8 4.5 50.0 6892 6298 7485 8.6 2.0 4.3 55.0 5561 5046 6076 9.3 2.2 4.2 60.0 4512 4065 4958 9.9 2.4 4.1 65.0 3679 3293 4065 10.5 2.6 4.0 70.0 3016 2681 3350 11.1 2.8 3.9 75.0 2484 2194 2773 11.7 3.0 3.8 80.0 2055 1804 2306 12.2 3.3 3.7 85.0 1708 1490 1926 12.8 3.5 3.7 90.0 1426 1237 1616 13.3 3.7 3.6 95.0 1196 1031 1361 13.8 4.0 3.5 100.0 1007 862.9 1151 14.3 4.2 3.4 105.0 851.1 725.2 977.0 14.8 4.5 3.3 110.0 722.2 612.0 832.4 15.3 4.7 3.2 115.0 615.1 518.4 711.8 15.7 5.0 3.2 120.0 525.7 440.7 610.8 16.2 5.2 3.1 125.0 451.0 376.0 525.9 16.6 5.5 3.0 temperature measurement b572**v smds with nickel barrier termination, case size 0402 v2** page 9 of 14 please read important notes and cautions and warnings at the end of this document.
b57261v2333j060 r/t no. 8506 t ( c) b 25/100 = 4575 k, r 25 = 33000 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 5102000 3983000 6220900 21.9 2.7 8.0 50.0 3444200 2737400 4151000 20.5 2.7 7.7 45.0 2354900 1903400 2806500 19.2 2.6 7.5 40.0 1629700 1338300 1921200 17.9 2.5 7.2 35.0 1140900 951000 1330900 16.6 2.4 7.0 30.0 807560 682690 932430 15.5 2.3 6.8 25.0 577610 494870 660360 14.3 2.2 6.6 20.0 417310 362080 472530 13.2 2.1 6.4 15.0 304400 267310 341480 12.2 2.0 6.2 10.0 224090 199050 249130 11.2 1.9 6.0 5.0 166430 149450 183410 10.2 1.7 5.9 0.0 124660 113110 136200 9.3 1.6 5.7 5.0 94132 86263 102000 8.4 1.5 5.5 10.0 71640 66275 77005 7.5 1.4 5.4 15.0 54934 51282 58585 6.6 1.3 5.2 20.0 42429 39953 44905 5.8 1.1 5.1 25.0 33000 31350 34650 5.0 1.0 5.0 30.0 25839 24338 27340 5.8 1.2 4.8 35.0 20363 19031 21696 6.5 1.4 4.7 40.0 16148 14977 17320 7.3 1.6 4.6 45.0 12883 11859 13906 7.9 1.8 4.5 50.0 10337 9447 11228 8.6 2.0 4.3 55.0 8341 7569 9114 9.3 2.2 4.2 60.0 6767 6098 7436 9.9 2.4 4.1 65.0 5519 4940 6098 10.5 2.6 4.0 70.0 4523 4022 5025 11.1 2.8 3.9 75.0 3726 3291 4160 11.7 3.0 3.8 80.0 3083 2706 3460 12.2 3.3 3.7 85.0 2563 2236 2890 12.8 3.5 3.7 90.0 2140 1855 2424 13.3 3.7 3.6 95.0 1794 1546 2042 13.8 4.0 3.5 100.0 1510 1294 1726 14.3 4.2 3.4 105.0 1277 1088 1465 14.8 4.5 3.3 110.0 1083 917.9 1249 15.3 4.7 3.2 115.0 922.6 777.5 1068 15.7 5.0 3.2 120.0 788.6 661.1 916.2 16.2 5.2 3.1 125.0 676.4 564.1 788.8 16.6 5.5 3.0 temperature measurement b572**v smds with nickel barrier termination, case size 0402 v2** page 10 of 14 please read important notes and cautions and warnings at the end of this document.
b57221v2473j060 r/t no. 8503 t ( c) b 25/100 = 4500 k, r 25 = 47000 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 6228300 4879600 7577000 21.7 2.8 7.8 50.0 4254600 3392300 5116900 20.3 2.7 7.5 45.0 2943900 2386300 3501600 18.9 2.6 7.2 40.0 2061700 1697400 2426100 17.7 2.5 7.0 35.0 1460300 1220000 1700700 16.5 2.4 6.8 30.0 1045500 885590 1205300 15.3 2.3 6.6 25.0 756070 648910 863230 14.2 2.2 6.4 20.0 552060 479750 624370 13.1 2.1 6.2 15.0 406800 357710 455880 12.1 2.0 6.0 10.0 302380 268900 335870 11.1 1.9 5.8 5.0 226650 203720 249580 10.1 1.8 5.7 0.0 171240 155500 186990 9.2 1.7 5.5 5.0 130370 119550 141200 8.3 1.5 5.4 10.0 99988 92540 107440 7.4 1.4 5.2 15.0 77226 72113 82339 6.6 1.3 5.1 20.0 60051 56554 63547 5.8 1.2 5.0 25.0 47000 44650 49350 5.0 1.0 4.8 30.0 37017 34871 39163 5.8 1.2 4.7 35.0 29331 27419 31243 6.5 1.4 4.6 40.0 23376 21689 25064 7.2 1.6 4.5 45.0 18736 17256 20215 7.9 1.8 4.4 50.0 15098 13807 16389 8.6 2.0 4.3 55.0 12230 11106 13354 9.2 2.2 4.2 60.0 9958 8981 10934 9.8 2.4 4.1 65.0 8147 7299 8995 10.4 2.6 4.0 70.0 6697 5961 7433 11.0 2.8 3.9 75.0 5530 4891 6169 11.6 3.1 3.8 80.0 4587 4032 5142 12.1 3.3 3.7 85.0 3821 3338 4304 12.6 3.5 3.6 90.0 3196 2776 3617 13.2 3.7 3.5 95.0 2684 2318 3051 13.7 4.0 3.5 100.0 2263 1943 2583 14.2 4.2 3.4 105.0 1915 1635 2195 14.6 4.4 3.3 110.0 1627 1381 1872 15.1 4.7 3.2 115.0 1386 1171 1602 15.5 4.9 3.2 120.0 1186 996.2 1375 16.0 5.2 3.1 125.0 1018 850.5 1185 16.4 5.4 3.0 temperature measurement b572**v smds with nickel barrier termination, case size 0402 v2** page 11 of 14 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 b572**v smds with nickel barrier termination, case size 0402 v2** page 12 of 14 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 b572**v smds with nickel barrier termination, case size 0402 v2** page 13 of 14 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 14 of 14

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