1 of 5 november 2006 cts electronic components www.ctscorp.com resistance tolerance : resistance range : standard: 2% or 0.5 ? (whichever is greater) standard: 10 ? to 1 meg ? special: 0.25% or 0.3 ? (whichever is greater) operating temperature range : dielectric strength : -55c to +125c 1 00 vac temperature coefficient : maximum operating voltage : standard: 100 ? to 1 meg ? 50v not to exceed rated power 100ppm/c typical 10 ? to 99 ? 200ppm/c typical power rating (total network power) : 14 pin 16 pin 20 pin @25c 2.0w 2.3w 3.0w @70c 1.3w 1.5w 2.0w maximum resistor power : (not to exceed total network power) schematic 1 3 5 7 @25c 0.15w 0.30w 0.15w 0.15w @70c 0.10w 0.20w 0.10w 0.10w features ? medium body design ? low profile---board to network clearance of 0.0075?0.0025? ? solid ceramic construction ? no internal dendrite growth ? conforms to eia pdp-100 sogn-0002 ? packaged in tape & reel or slide packs ? application specific circuits are available ? compatible with ir reflow & vapor phase reflow solder processes ? rohs compliant version available leaded surface mount series 768 technical data
page 2 of 5 november 2006 cts electronic components www.ctscorp.com types of circuits bussed (schematic 1) isolated (schematic 3) dual terminator (schematic 5) r/2r ladder (schema tic 7) land patterns "a" dimension no. of pins mm in. 14 9.91 0.25 0.390 0.010 16 11.18 0.25 0.440 0.010 20 13.70 0.25 0.540 0.010 notes mm 0.10 max 1. lead coplanarity in. 0.004 mm 0.25 2. general tolerances in. 0.010 3. mm & in. dimensions are not equivalent lead count a b c d mm 5.34 7.37 9.40 7.60 14p in. 0.21 0.29 0.37 0.30 mm 5.34 7.37 9.40 7.60 16p in. 0.21 0.29 0.37 0.35 mm 5.34 7.37 9.40 7.60 20p in. 0.21 0.29 0.37 0.45 0.0025 c a b d 2.03 .080 1.27 .050 0.63 .025 typ. typ. typ.
page 3 of 5 november 2006 cts electronic components www.ctscorp.com standard resistor values & eia code dual terminator resistor values the series 768 part number includes the eia code value of the thevenin equivalent resistances of r1 and r2. the thevenin equivalent resistance is calculated in the following way: the suffix letter relates only to the sequence of variations that equal the same equivalent resistance. reference chart. r eq =r 1 r 2 /(r 1 + r 2 ) example: 768205131c r1=180 ohms r2=470 ohms req=130 ohms pin n/2 is common to r2 and pin n is common to r1 on cts series 768. ohms code ohms code ohms code ohms code ohms code ohms code 0 000x 68 680 470 471 3.3k 332 27k 273 220k 224 10 100 75 750 510 511 3.9k 392 33k 333 270k 274 12 120 82 820 560 561 4.7k 472 39k 393 330k 334 15 150 100 101 680 681 5.1k 512 47k 473 390k 394 18 180 110 111 820 821 5.6k 562 51k 513 470k 474 22 220 120 121 1k 102 6.8k 682 56k 563 510k 514 27 270 150 151 1.2k 122 8.2k 822 68k 683 560k 564 33 330 180 181 1.5k 152 10k 103 82k 823 680k 684 39 390 220 221 1.8k 182 12k 123 100k 104 820k 824 47 470 270 271 2.0k 202 15k 153 120k 124 1m 105 51 510 330 331 2.2k 222 18k 183 150k 154 56 560 390 391 2.7k 272 22k 223 180k 184 r1 r2 r1 r2 ohms thevenin equivalent cts code ohms thevenin equivalent cts code 25 50 17 ohm 150a 81 130 50 ohm 500a 30 50 19 ohm 190a 81 2.2k 78 ohm 780a 30 620 29 ohm 290a 100 200 67 ohm 670b 33 4.7k 33 ohm 330a 100 430 81 ohm 810a 36 620 34 ohm 340a 100 150 60 ohm 600a 43 620 40 ohm 400a 106 169 65 ohm 650a 68 189 50 ohm 500b 110 220 73 ohm 730a 75 620 67 ohm 670a 118 178 71 ohm 710a 80 220 59 ohm 590a 120 200 75 ohm 750b
page 4 of 5 november 2006 cts electronic components www.ctscorp.com 1. all tolerances +/-2%. 2. other values available on re quest. 3. suffix letter has no significance - assigned in sequen tial order. how to order r1 r2 r1 r2 ohms thevenin equivalent cts code ohms thevenin equivalent cts code 120 180 72 ohm 720a 390 620 239 ohm 241a 120 120 60 ohm 600b 470 1k 320 ohm 321a 150 150 75 ohm 750a 470 680 278 ohm 281a 160 260 99 ohm 990a 470 940 313 ohm 311a 160 240 96 ohm 960a 500 500 250 ohm 251a 160 270 100 ohm 101d 560 910 347 ohm 351a 162 260 100 ohm 101b 560 1k 359 ohm 361a 180 300 113 ohm 111b 680 1k 405 ohm 401a 180 470 130 ohm 131c 750 750 375 ohm 381a 180 390 123 ohm 121a 750 2.3k 566 ohm 571a 180 270 108 ohm 111a 1k 3.3k 767 ohm 771a 180 220 99 ohm 101a 1k 2k 667 ohm 671a 200 1.5k 176 ohm 171d 1.1k 2.2k 733 ohm 731a 220 330 132 ohm 131a 1.2k 1.2k 600 ohm 601a 220 270 121 ohm 121b 1.5k 1.5k 750 ohm 751a 220 220 110 ohm 111d 1.5k 3.3k 1031 ohm 102a 240 170 100 ohm 101c 2k 2k 1000 ohm 102b 240 620 173 ohm 171c 2.2k 5.6k 1579 ohm 162a 250 250 125 ohm 131b 2.2k 4.4k 1467 ohm 152a 270 470 171 ohm 171a 2.2k 3.3k 1320 ohm 132a 270 180 108 ohm 111c 3k 6.2k 2022 ohm 202a 271 131 88 ohm 880a 3k 2k 1200 ohm 122a 330 470 194 ohm 191a 3.3k 4.7k 1939 ohm 192a 330 680 222 ohm 221a 3.9k 3.3k 1788 ohm 182a 330 390 179 ohm 181a 4.7k 22k 3873 ohm 392a 330 220 132 ohm 131d 5k 5k 2500 ohm 252a 330 330 165 ohm 171b 6.8k 22k 5194 ohm 522a 360 720 240 ohm 241b 10k 51k 8361 ohm 842a 360 600 225 ohm 231a 50k 100k 33,333 ohm 333a 768 14 1 103 g p tr13 resistor code tolerance part number series number of pins 1 bussed 3 isolated 5 dual terminator 7 ladder schematic refer to the eia code schematics 1 & 3 : page 3 5 : pages 3 & 4 schematic schematic schematic 1 & 3 5 7 j = 5% tolerance is 2% standard. f= 1lsb g = 2% (std.) refer to dual terminator d= 1/2lsb f = 1% codes on pages 3&4. (lsb=least d = 1/2% not necessary to add ?g? significant bit) after dual terminator code. rohs compliant insert ?p? for rohs; otherwise blank. solder dipped 96sn/04ag over ni on cu lead wire. note: no dashes or spaces to appear in part number. example: 768141103gptr13 packaging ? tr = tape & reel sp = slide pack reel size ? 7 = 7? reel 13 = 13? reel
page 5 of 5 november 2006 cts electronic components www.ctscorp.com packaging environmental performance specifications test max. % delta r mil. std. 202 method test cond. test description thermal cycling 0.25% 107 b 5 cycles, -65c to +125c short time overload 0.25% 2 1/2 x rated voltage, 5 sec (100v max.) moisture resistance 0.5% 106 240 hours, 0.1 rated load, -10c to +65c, 90% rh load humidity 1.0% 1000 hours, 0.1 rated load, 70c, 85-92% rh high temp exposure 1.0% 240 hours, no load, @ 125c load life 1.0% 108 f 2000 hours @ 70c rated load resistance to solder heat 0.25% 30 seconds @ 218c, dwell mechanical shock 0.25% 213 i 100g, 1 msec., 3 shocks each plane vibration 0.25% 204 d 20g, 10-2000hz, 4 hours/plane terminal strength 0.25% 0.9 kg. pull, 30 sec., two 45 bends low temp storage 0.25% 24 hours @ -65c, no load low temp operation 0.25% 45 min @ -65c, full load flammability n/a 94v-0 non-fungus per mil-std 810c resistance to solvents isopropyl alcohol solderability rma flux, 230c, 5 seconds dip, 95% coverage tape & reel 14p 16p 20p tape width 24mm 24mm 24mm tape pitch 12mm 12mm 12mm reel diameter 13" 13" 13" #parts/reel 2000 2000 2000 slide packs tube length 20" 20" 20" #parts/slide pac 48 43 35
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