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1998 sep 04 36 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... features accuracy over a wide temperature range high stability over a long life excellent price/performance ratio. application temperature sensing and control. description these thermistors have a negative temperature coefficient. the device consists of a chip with two tinned solid copper-plated leads. it is grey lacquered and colour coded, but not insulated. marking the thermistors are marked with colour bands in accordance with fig.1 and table 3. mounting by soldering in any position. quick reference data parameter value resistance value at 25 c 3.3 w to 470 k w tolerance on r 25 -value 2%; 3%; 5%; 10% tolerance on b 25/85 -value 0.5% to 3% maximum dissipation 500 mw response time 1.2 s operating temperature range: at zero dissipation; continuously - 40 to +125 c at zero dissipation; for short periods 150 c at maximum dissipation (500 mw) 0 to 55 c climatic category 40/125/56 mass ? 0.22 g
1998 sep 04 37 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... mechanical data outline table 1 physical dimensions for relevant type; see fig.1 code number 2322 640 ..... b max (mm) d (mm) h 1 (mm) h 2 max (mm) l (mm) p (mm) t max (mm) min. max. 6.331 to 6.474 3.3 0.5 0.6 0.06 - 2.0 1.0 6.0 24 1.5 2.54 3.0 6.338 to 6.221 5.0 0.6 0.06 1.0 4.0 6.0 24 1.5 2.54 4.0 fig.1 component outline 2322 640 6.331 to 6.474. for dimensions see table 1. handbook, 4 columns ccb281 l t b h 2 h 1 li iii ii i d p
1998 sep 04 38 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... ordering information table 2 code numbers and relevant packaging quantities note 1. the maximum number of empty places per reel shall not exceed 0.5% of the total number of components per reel. no more than three consecutive positions may be vacant. table 3 r 25 -values, catalogue numbers and coding parameter bulk tape and reel (1) 1e pitch tape and reel (1) 2e pitch 2322 640 6.... 2322 640 4.... 2322 640 3.... quantity 500 1500 per reel, 2 reels per box 1500 per reel, 2 reels per box r 25 ( w ) b 25/85 -value catalogue number 2322 640 6.... colour code (see fig.1 and note 1) r 25 2% r 25 3% r 25 5% r 25 10% i ii iii 3.3 2880 k 3% 4338 6338 3338 2338 orange orange gold 4.7 2880 k 3% 4478 6478 3478 2478 yellow violet gold 6.8 2880 k 3% 4688 6688 3688 2688 blue grey gold 10 2990 k 3% 4109 6109 3109 2109 brown black black 15 3041 k 3% 4159 6159 3159 2159 brown green black 22 3136 k 3% 4229 6229 3229 2229 red red black 33 3390 k 3% 4339 6339 3339 2339 orange orange black 47 3390 k 3% 4479 6479 3479 2479 yellow violet black 68 3390 k 3% 4689 6689 3689 2689 blue grey black 100 3560 k 0.75% 4101 6101 3101 2101 brown black brown 150 3560 k 0.75% 4151 6151 3151 2151 brown green brown 220 3560 k 0.75% 4221 6221 3221 2221 red red brown 330 3560 k 0.75% 4331 6331 3331 2331 orange orange brown 470 3560 k 0.5% 4471 6471 3471 2471 yellow violet brown 680 3560 k 0.5% 4681 6681 3681 2681 blue grey brown 1000 3528 k 0.5% 4102 6102 3102 2102 brown black red 1500 3528 k 0.5% 4152 6152 3152 2152 brown green red 2000 3528 k 0.5% 4202 6202 3202 2202 red black red 2200 3977 k 0.75% 4222 6222 3222 2222 red red red
1998 sep 04 39 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... note 1. dependent upon r 25 -tolerance, the band iv is coloured as follows: a) for r 25 2%, band iv is coloured red b) for r 25 3%, band iv is coloured orange c) for r 25 5%, band iv is coloured gold d) for r 25 10%, band iv is coloured silver. 2700 3977 k 0.75% 4272 6272 3272 2272 red violet red 3300 3977 k 0.75% 4332 6332 3332 2332 orange orange red 4700 3977 k 0.75% 4472 6472 3472 2472 yellow violet red 6800 3977 k 0.75% 4682 6682 3682 2682 blue grey red 10000 3977 k 0.75% 4103 6103 3103 2103 brown black orange 12000 3740 k 2% 4123 6123 3123 2123 brown red orange 15000 3740 k 2% 4153 6153 3153 2153 brown green orange 22000 3740 k 2% 4223 6223 3223 2223 red red orange 33000 4090 k 1.5% 4333 6333 3333 2333 orange orange orange 47000 4090 k 1.5% 4473 6473 3473 2473 yellow violet orange 68000 4190 k 1.5% 4683 6683 3683 2683 blue grey orange 100000 4190 k 1.5% 4104 6104 3104 2104 brown black yellow 150000 4370 k 2.5% 4154 6154 3154 2154 brown green yellow 220000 4370 k 2.5% 4224 6224 3224 2224 red red yellow 330000 4570 k 1.5% 4334 6334 3334 2334 orange orange yellow 470000 4570 k 1.5% 4474 6474 3474 2474 yellow violet yellow r 25 ( w ) b 25/85 -value catalogue number 2322 640 6.... colour code (see fig.1 and note 1) r 25 2% r 25 3% r 25 5% r 25 10% i ii iii
1998 sep 04 40 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... r t value and tolerance these thermistors have a narrow tolerance on the b-value, the result of which provides a very small tolerance on the nominal resistance value over a wide temperature range. for this reason the usual graphs of r = f(t) are replaced by tables 5 through 17, together with a formula to calculate the characteristics with a high precision. formulae to determine nominal resistance values (1) the resistance values at intermediate temperatures, or the operating temperature values, can be calculated using the following interpolation laws (extended steinhart and hart ): (1) (2) where: a, b, c, d, a 1 , b 1 , c 1 and d 1 are constant values depending on the material concerned; see table 4. r ref is the resistance value at a reference temperature (in this event 25 c). t is the temperature in k. (1) formulae numbered (1) and (2) are interchangeable with an error of max. 0.005 c in the range 25 c to 125 c and max. 0.015 c in the range - 40 c to +25 c. r(t) r = ref e abt ct 2 dt 3 + ++ t(r)= a 1 b 1 r r ref ---------- ln c 1 ln 2 r r ref ---------- d 1 ln 3 r r ref ---------- ++ + ? ?? 1 C determination of the resistance/temperature deviation from nominal value the total resistance deviation is obtained by combining the r 25 -tolerance and the resistance deviation due to b-tolerance. when: x=r 25 -tolerance y = resistance deviation due to b-tolerance z = complete resistance deviation, then: or z ? x+y. when: tc = temperature coefficient d t = temperature deviation, then: the temperature tolerances are plotted in figs 3, 4, 5, 6, 7 and 8. example: at 0 c, assume x = 5%, y = 0.89% and tc = 5.08%/k (see table 12), then: a ntc with a r 25 -value of 10 k w has a value of 32.56 k w between - 1.17 and +1.17 c. z1 x 100 --------- - + ? ?? 1 y 100 --------- - + ? ?? 1 C = 100 % d t z tc ------- - = z1 5 100 --------- - + 1 0.89 100 ----------- + 1 C {} 100% = 1.05 1.0089 1 C {} 100% 5.9345% 5.93% ? () = B = d t z tc ------- - 5.93 5.08 ----------- 1.167 c1.17 ? c ) ( == =
1998 sep 04 41 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... table 4 parameters for determining nominal resistance values b 25/85 -value (k) a b (k) c (10 5 k 2 ) d (10 6 k 3 ) a 1 (10 - 3 ) b 1 (10 - 4 k - 1 ) c 1 (10 - 6 k - 2 ) d 1 (10 - 7 k - 3 ) 2880 - 9.094 2251.74 229098 - 27.4482 3.354016 3.495020 2.095959 4.260615 2990 - 10.2296 2887.62 132336 - 25.0251 3.354016 3.415560 4.955455 4.364236 3041 - 11.1334 3658.73 - 102895 0.516652 3.354016 3.349290 3.683843 7.050455 3136 - 12.4493 4702.74 - 402687 31.96830 3.354016 3.243880 2.658012 - 2.70156 3390 - 12.6814 4391.97 - 232807 15.09643 3.354016 2.993410 2.135133 - 8.05672 3528 - 12.060 3.688 - 0.076 - 5.915 3.354016 2.909670 1.632136 0.719220 3528 - 21.095 11.930 - 25.139 248.120 3.354016 2.933908 3.494314 - 7.71269 3560 - 13.072 4.191 - 0.472 - 11.993 3.354016 2.884193 4.118032 1.786790 3740 - 13.897 4.558 - 0.983 - 7.522 3.354016 2.744032 3.666944 1.375492 3977 - 14.634 4.792 - 1.153 - 3.731 3.354016 2.569355 2.626311 0.675278 4090 - 15.532 5.230 - 1.605 - 5.414 3.354016 2.519107 3.510939 1.105179 4190 - 16.035 5.459 - 1.911 - 3.328 3.354016 2.460382 3.405377 1.034240 4370 - 16.872 5.759 - 1.943 - 6.869 3.354016 2.367720 3.585140 1.255349 4570 - 17.644 6.023 - 2.032 - 7.184 3.354016 2.264097 3.278184 1.097628
1998 sep 04 42 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... table 5 resistance values at intermediate temperatures t oper ( c) r t /r 25 d r due to b-tolerance (%) tc (%/k) r 25 ( w ) 2322 640 .....; see table 17, note 1 6.338 6.478 6.688 - 40 13.6364 8.08 - 4.97 45.00 64.09 92.73 - 35 10.6806 7.30 - 4.80 35.25 50.20 72.63 - 30 8.4350 6.55 - 4.64 27.84 39.64 57.36 - 25 6.7148 5.84 - 4.48 22.16 31.56 45.66 - 20 5.3866 5.15 - 4.33 17.78 25.32 36.63 - 15 4.3532 4.49 - 4.19 14.37 20.46 29.60 - 10 3.5432 3.85 - 4.05 11.69 16.65 24.09 - 5 2.9035 3.24 - 3.92 9.58 13.65 19.74 0 2.3950 2.65 - 3.79 7.90 11.26 16.29 5 1.9880 2.08 - 3.66 6.56 9.34 13.52 10 1.6602 1.54 - 3.55 5.48 7.80 11.29 15 1.3944 1.01 - 3.43 4.60 6.55 9.48 20 1.1777 0.49 - 3.32 3.89 5.54 8.01 25 1.0000 0.00 - 3.22 3.30 4.70 6.80 30 0.8534 0.48 - 3.12 2.82 4.01 5.80 35 0.7319 0.94 - 3.02 2.42 3.44 4.98 40 0.6307 1.39 - 2.93 2.08 2.96 4.29 45 0.5459 1.82 - 2.84 1.80 2.57 3.71 50 0.4746 2.24 - 2.76 1.57 2.23 3.23 55 0.4143 2.65 - 2.68 1.37 1.95 2.82 60 0.3631 3.04 - 2.60 1.20 1.71 2.47 65 0.3194 3.43 - 2.52 1.05 1.50 2.17 70 0.2820 3.80 - 2.45 0.93 1.33 1.92 75 0.2499 4.16 - 2.38 0.82 1.17 1.70 80 0.2222 4.51 - 2.32 0.73 1.04 1.51 85 0.1982 4.85 - 2.25 0.65 0.93 1.35 90 0.1774 5.19 - 2.19 0.59 0.83 1.21 95 0.1592 5.51 - 2.13 0.53 0.75 1.08 100 0.1433 5.82 - 2.07 0.47 0.67 0.97 105 0.1294 6.13 - 2.02 0.43 0.61 0.88 110 0.1171 6.43 - 1.97 0.39 0.55 0.80 115 0.1063 6.72 - 1.92 0.35 0.50 0.72 120 0.0967 7.00 - 1.87 0.32 0.45 0.66 125 0.0882 7.28 - 1.82 0.29 0.41 0.60 130 0.0806 7.55 - 1.77 0.27 0.38 0.55 135 0.0739 7.81 - 1.73 0.24 0.35 0.50 140 0.0678 8.07 - 1.69 0.22 0.32 0.46 145 0.0624 8.32 - 1.65 0.21 0.29 0.42 150 0.0575 8.56 - 1.61 0.19 0.27 0.39
1998 sep 04 43 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... table 6 resistance values at intermediate temperatures t oper ( c) r t /r 25 d r due to b-tolerance (%) tc (%/k) r 25 ( w ) 2322 640 .....; see table 17, note 1 6.109 - 40 13.675 8.39 - 4.86 136.75 - 35 10.763 7.58 - 4.72 107.63 - 30 8.5318 6.81 - 4.58 85.32 - 25 6.8097 6.06 - 4.44 68.10 - 20 5.4717 5.35 - 4.31 54.72 - 15 4.4253 4.66 - 4.18 44.25 - 10 3.6017 4.00 - 4.06 36.02 - 5 2.9494 3.37 - 3.94 29.49 0 2.4295 2.75 - 3.82 24.30 5 2.0128 2.16 - 3.71 20.13 10 1.6767 1.59 - 3.60 16.77 15 1.4042 1.04 - 3.50 14.04 20 1.1821 0.51 - 3.39 11.82 25 1.0000 0.00 - 3.30 10.00 30 0.8500 0.50 - 3.20 8.50 35 0.7259 0.98 - 3.11 7.26 40 0.6226 1.44 - 3.03 6.23 45 0.5363 1.89 - 2.94 5.36 50 0.4639 2.33 - 2.86 4.64 55 0.4029 2.75 - 2.78 4.03 60 0.3512 3.16 - 2.71 3.51 65 0.3073 3.56 - 2.64 3.07 70 0.2698 3.95 - 2.57 2.70 75 0.2377 4.32 - 2.50 2.38 80 0.2101 4.69 - 2.43 2.10 85 0.1864 5.04 - 2.37 1.86 90 0.1658 5.38 - 2.31 1.66 95 0.1479 5.72 - 2.25 1.48 100 0.1323 6.05 - 2.20 1.32 105 0.1187 6.36 - 2.14 1.19 110 0.1068 6.67 - 2.09 1.07 115 0.0964 6.98 - 2.04 0.96 120 0.0871 7.27 - 1.99 0.87 125 0.0790 7.56 - 1.94 0.79 130 0.0717 7.84 - 1.90 0.72 135 0.0653 8.11 - 1.85 0.65 140 0.0596 8.37 - 1.81 0.60 145 0.0545 8.63 - 1.77 0.55 150 0.0500 8.89 - 1.73 0.50
1998 sep 04 44 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... table 7 resistance values at intermediate temperatures t oper ( c) r t /r 25 d r due to b-tolerance (%) tc (%/k) r 25 ( w ) 2322 640 .....; see table 17, note 1 6.159 - 40 17.042 8.53 - 5.54 255.63 - 35 12.993 7.71 - 5.31 194.90 - 30 10.017 6.92 - 5.10 150.26 - 25 7.8037 6.17 - 4.90 117.06 - 20 6.1382 5.44 - 4.71 92.07 - 15 4.8719 4.74 - 4.53 73.08 - 10 3.8996 4.07 - 4.37 58.49 - 5 3.1461 3.42 - 4.22 47.19 0 2.5571 2.80 - 4.07 38.36 5 2.0930 2.20 - 3.94 31.40 10 1.7245 1.62 - 3.81 25.87 15 1.4298 1.06 - 3.69 21.45 20 1.1924 0.52 - 3.57 17.89 25 1.0000 0.00 - 3.47 15.00 30 0.8431 0.50 - 3.36 12.65 35 0.7144 0.99 - 3.26 10.72 40 0.6083 1.47 - 3.17 9.12 45 0.5203 1.92 - 3.08 7.80 50 0.4470 2.37 - 3.00 6.70 55 0.3856 2.80 - 2.92 5.78 60 0.3339 3.21 - 2.84 5.01 65 0.2903 3.62 - 2.76 4.35 70 0.2533 4.01 - 2.69 3.80 75 0.2218 4.39 - 2.62 3.33 80 0.1948 4.77 - 2.56 2.92 85 0.1717 5.13 - 2.50 2.58 90 0.1518 5.48 - 2.44 2.28 95 0.1346 5.82 - 2.38 2.02 100 0.1196 6.15 - 2.32 1.79 105 0.1067 6.47 - 2.27 1.60 110 0.0954 6.79 - 2.22 1.43 115 0.0855 7.09 - 2.17 1.28 120 0.0768 7.39 - 2.12 1.15 125 0.0691 7.69 - 2.07 1.04 130 0.0624 7.97 - 2.03 0.94 135 0.0565 8.25 - 1.98 0.85 140 0.0512 8.52 - 1.94 0.77 145 0.0465 8.78 - 1.90 0.70 150 0.0423 9.04 - .86 0.63
1998 sep 04 45 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... table 8 resistance values at intermediate temperatures t oper ( c) r t /r 25 d r due to b-tolerance (%) tc (%/k) r 25 ( w ) 2322 640 .....; see table 17, note 1 6.229 - 40 17.042 8.80 - 5.54 374.92 - 35 12.993 7.95 - 5.31 285.85 - 30 10.017 7.14 - 5.10 220.38 - 25 7.8037 6.36 - 4.90 171.68 - 20 6.1382 5.61 - 4.71 135.04 - 15 4.8719 4.89 - 4.53 107.18 - 10 3.8996 4.20 - 4.37 85.79 - 5 3.1461 3.53 - 4.22 69.21 0 2.5571 2.89 - 4.07 56.26 5 2.0930 2.27 - 3.94 46.05 10 1.7245 1.67 - 3.81 37.94 15 1.4298 1.10 - 3.69 31.45 20 1.1924 0.54 - 3.57 26.23 25 1.0000 0.00 - 3.47 22.00 30 0.8431 0.52 - 3.36 18.55 35 0.7144 1.02 - 3.26 15.72 40 0.6083 1.51 - 3.17 13.38 45 0.5203 1.98 - 3.08 11.45 50 0.4470 2.44 - 3.00 9.83 55 0.3856 2.88 - 2.92 8.48 60 0.3339 3.32 - 2.84 7.35 65 0.2903 3.73 - 2.76 6.39 70 0.2533 4.14 - 2.69 5.57 75 0.2218 4.53 - 2.62 4.88 80 0.1948 4.91 - 2.56 4.29 85 0.1717 5.29 - 2.50 3.78 90 0.1518 5.65 - 2.44 3.34 95 0.1346 6.00 - 2.38 2.96 100 0.1196 6.34 - 2.32 2.63 105 0.1067 6.68 - 2.27 2.35 110 0.0954 7.00 - 2.22 2.10 115 0.0855 7.32 - 2.17 1.88 120 0.0768 7.62 - 2.12 1.69 125 0.0691 7.93 - 2.07 1.52 130 0.0624 8.22 - 2.03 1.37 135 0.0565 8.50 - 1.98 1.24 140 0.0512 8.78 - 1.94 1.13 145 0.0165 9.06 - 1.90 1.02 150 0.0423 9.32 - 1.86 0.93
1998 sep 04 46 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... table 9 resistance values at intermediate temperatures t oper ( c) r t /r 25 d r due to b-tolerance (%) tc (%/k) r 25 ( w ) 2322 640 .....; see table 17, note 1 6.339 6.479 6.689 - 40 21.4241 9.51 - 5.94 707.00 1006.93 1456.84 - 35 16.0147 8.59 - 5.70 528.48 752.69 1089.00 - 30 12.1074 7.72 - 5.49 399.54 569.05 823.30 - 25 9.2511 6.87 - 5.28 305.29 434.80 629.07 - 20 7.1395 6.06 - 5.09 235.60 335.56 485.49 - 15 5.5619 5.29 - 4.90 183.54 261.41 378.21 - 10 4.3715 4.54 - 4.73 144.26 205.46 297.26 - 5 3.4647 3.82 - 4.57 114.33 162.84 235.60 0 2.7678 3.12 - 4.42 91.34 130.09 188.21 5 2.2276 2.45 - 4.27 73.51 104.70 151.48 10 1.8057 1.81 - 4.13 59.59 84.87 122.79 15 1.4735 1.18 - 4.00 48.63 69.26 100.20 20 1.2102 0.58 - 3.88 39.94 56.88 82.29 25 1.0000 0.00 - 3.76 33.00 47.00 68.00 30 0.8311 0.56 - 3.64 27.43 39.06 56.51 35 0.6946 1.11 - 3.54 22.92 32.64 47.23 40 0.5835 1.63 - 3.43 19.26 27.42 39.68 45 0.4927 2.14 - 3.34 16.26 23.16 33.50 50 0.4180 2.64 - 3.24 13.79 19.65 28.42 55 0.3563 3.12 - 3.15 11.76 16.74 24.23 60 0.3050 3.58 - 3.07 10.06 14.33 20.74 65 0.2622 4.03 - 2.98 8.65 12.32 17.83 70 .02263 4.47 - 2.90 7.47 10.64 15.39 75 0.1961 4.90 - 2.83 6.47 9.22 13.33 80 0.1705 5.31 - 2.76 5.63 8.02 11.60 85 0.1489 5.71 - 2.69 4.91 7.00 10.12 90 0.1304 6.11 - 2.62 4.30 6.13 8.86 95 0.1146 6.49 - 2.55 3.78 5.38 7.79 100 0.1010 6.86 - 2.49 3.33 4.75 6.87 105 0.0893 7.22 - 2.43 2.95 4.20 6.07 110 0.0792 7.57 - 2.37 2.61 3.72 5.38 115 0.0704 7.91 - 2.32 2.32 3.31 4.79 120 0.0628 8.24 - 2.26 2.07 2.95 4.27 125 0.0561 8.57 - 2.21 1.85 2.64 3.82 130 0.0503 8.88 - 2.16 1.66 2.37 3.42 135 0.0452 9.19 - 2.11 1.49 2.13 3.07 140 0.0407 9.49 - 2.07 1.34 1.91 2.77 145 0.0368 9.79 - 2.02 1.21 1.73 2.50 150 0.0333 10.08 - 1.98 1.10 1.56 2.26
1998 sep 04 47 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... table 10 resistance values at intermediate temperatures t oper ( c) r t /r 25 d r due to b-tolerance (%) tc (%/k) r 25 (k w ) 2322 640 .....; see table 17, note 1 6.101 6.151 6.221 6.331 6.471 6.681 - 40 21.9261 2.50 - 5.75 2192.6 2388.9 4823.7 7236 10503 14910 - 35 16.5224 2.26 - 5.57 1652.2 2478.4 3634.9 5452 7766 11235 - 30 12.5583 2.03 - 5.40 1255.8 1883.7 2762.8 4144 5902 8540 - 25 9.62492 1.80 - 5.24 962.5 1443.7 2117.5 3176 4524 6545 - 20 7.43618 1.59 - 5.08 743.6 1115.4 1636.0 2454 3495 5057 - 15 5.78976 1.39 - 4.93 579.0 868.5 1273.7 1911 2721 3937 - 10 4.54158 1.19 - 4.78 454.2 681.2 999.1 1499 1235 3088 - 5 3.58813 1.00 - 4.64 358.8 538.2 789.4 1184 1686 2440 0 2.85449 0.82 - 4.51 285.4 428.2 628.0 942.0 1342 1941 5 2.28599 0.64 - 4.38 228.6 342.9 502.9 754.4 1074 1554 10 1.84245 0.47 - 4.25 184.2 276.4 405.3 608.0 865.9 1253 15 1.49414 0.31 - 4.13 149.4 224.1 328.7 493.1 702.2 1016 20 1.21887 0.15 - 4.01 121.9 182.8 268.2 402.2 572.9 828.8 25 1.000 0.00 - 3.90 100.0 150.0 220.0 330.0 470.0 680.0 30 0.82494 0.15 - 3.80 82.5 123.7 181.5 272.2 387.7 561.0 35 0.68413 0.29 - 3.69 68.4 102.6 150.5 225.8 321.5 465.2 40 0.57025 0.43 - 3.59 57.0 85.5 125.5 188.2 268.0 387.8 45 0.47765 0.56 - 3.50 47.8 71.6 105.1 157.6 224.5 324.8 50 0.40198 0.69 - 3.40 40.2 60.3 88.4 132.7 188.9 273.3 55 0.33984 0.82 - 3.31 34.0 51.0 74.8 112.1 159.7 231.1 60 0.28856 0.94 - 3.23 28.9 43.3 63.5 95.23 135.6 196.2 65 0.24606 1.06 - 3.15 24.6 36.9 54.1 81.20 115.6 167.3 70 0.21067 1.17 - 3.07 21.1 31.6 46.3 69.52 99.00 143.3 75 0.18108 1.29 - 2.99 18.1 27.2 39.8 59.76 85.11 123.1 80 0.15623 1.39 - 2.91 15.6 23.4 34.4 51.56 73.43 106.2 85 0.13529 1.50 - 2.84 13.5 20.3 29.8 44.65 63.59 92.00 90 0.11757 1.60 - 2.77 11.8 17.6 25.9 38.80 55.26 79.95 95 0.10251 1.70 - 2.71 10.3 15.4 22.6 33.83 48.18 69.71 100 0.08968 1.80 - 2.64 8.97 13.5 19.7 29.59 42.15 60.98 105 0.07871 1.89 - 2.58 7.87 11.8 17.3 25.97 36.99 53.52 110 0.06928 1.99 - 2.52 6.93 10.4 15.2 22.86 32.56 47.11 115 0.06117 2.08 - 2.46 6.12 9.18 13.5 20.19 28.75 41.60 120 0.05416 2.16 -2.41 5.42 8.12 11.9 17.87 25.46 36.83 125 0.04809 2.25 - 2.35 4.81 7.21 10.6 15.87 22.60 32.70 130 0.04282 2.33 - 2.30 4.28 6.42 9.42 14.13 20.12 29.11 135 0.03822 2.41 - 2.25 3.82 5.73 8.41 12.61 17.96 25.99 140 0.03420 2.49 - 2.20 3.42 5.13 7.52 11.29 16.07 23.25 145 0.03068 2.57 - 2.15 3.07 4.60 6.75 10.12 14.42 20.86 150 0.02758 2.65 - 2.10 2.76 4.14 6.07 9.10 12.96 18.76
1998 sep 04 48 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... table 11 resistance values at intermediate temperatures t oper ( c) r t /r 25 d r due to b-tolerance (%) tc (%/k) r 25 ( w ) 2322 640 .....; see table 17, note 1 6.102 6.152 6.202 - 40 23.3402 1.65 - 6.06 23342 35013 46684 - 35 17.3347 1.49 - 5.84 17336 26004 34672 - 30 13.0166 1.34 - 5.62 13018 19526 26035 - 25 9.8764 1.19 - 5.42 9877 14816 19754 - 20 7.5682 1.05 - 5.23 7569 11353 15138 - 15 5.8541 0.92 - 5.05 5855 8782 11709 - 10 4.5688 0.79 - 4.87 4569 6854 9138 - 5 3.5961 0.66 - 4.71 3596 5395 7193 0 2.8533 0.54 - 4.55 2854 4280 5707 5 2.2815 0.43 - 4.40 2282 3422 4563 10 1.8376 0.31 - 4.26 1838 2457 3675 15 1.4904 0.21 - 4.12 1491 2236 2981 20 1.2169 0.10 - 3.99 1217 1826 2434 25 1.0000 0.00 - 3.87 1000 1500 2000 30 0.8266 0.10 - 3.75 826.7 1240 1653 35 0.6873 0.19 - 3.63 687.4 1031 1375 40 0.5746 0.28 - 3.53 574.6 861.9 1149 45 0.4827 0.37 - 3.42 482.7 724.1 965.0 50 0.4073 0.46 - 3.32 407.4 611.0 814.7 55 0.3452 0.54 - 3.23 345.2 517.8 690.5 60 0.2937 0.62 - 3.14 293.7 440.6 587.5 65 0.2508 0.70 - 3.05 250.8 376.2 501.7 70 0.2149 0.78 - 2.97 214.9 322.4 429.8 75 0.1847 0.85 - 2.89 184.8 277.1 369.5 80 0.1593 0.92 - 2.81 159.3 238.9 318.6 85 0.1377 0.99 - 2.73 137.7 206.6 275.5 90 0.11942 1.06 - 2.66 119.4 179.1 238.9 95 0.10380 1.13 - 2.59 103.8 155.7 207.6 100 0.09045 1.19 - 2.53 90.46 135.7 180.9 105 0.07900 1.25 - 2.46 79.00 118.5 158.0 110 0.06915 1.31 - 2.40 69.16 103.7 138.3 115 0.06066 1.37 - 2.34 60.66 90.99 121.3 120 0.05332 1.43 - 2.29 53.32 79.98 106.6 125 0.04696 1.49 - 2.23 46.96 70.44 93.9 130 0.04143 1.54 - 2.18 41.44 62.15 82.9 135 0.03662 1.60 - 2.13 36.63 54.94 73.3 140 0.03243 1.65 - 2.08 32.43 48.65 64.9 145 0.02877 1.70 - 2.03 28.77 43.16 57.5 150 0.02556 1.75 - 1.98 25.56 38.34 51.1
1998 sep 04 49 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... table 12 resistance values at intermediate temperatures t oper ( c) r t /r 25 d r due to b-tolerance (%) tc (%/k) r 25 (k w ) 2322 640 .....; see table 17, note 1 6.222 6.272 6.332 6.472 6.682 6.103 - 40 33.21 2.66 6.57 73.06 89.67 109.6 156.1 225.8 332.1 - 35 23.99 2.41 6.36 52.78 64.77 79.17 112.8 163.1 240.0 - 30 17.52 2.17 6.15 38.55 47.31 57.82 82.35 119.1 175.2 - 25 12.93 1.94 5.95 28.44 34.91 42.67 60.77 87.92 129.3 - 20 9.636 1.71 5.76 21.20 26.02 31.80 45.30 65.53 96.36 - 15 7.250 1.50 5.58 15.95 19.58 23.93 34.08 49.30 72.50 - 10 5.505 1.29 5.40 12.11 14.86 18.16 25.87 37.43 55.05 - 5 4.216 1.08 5.24 9.275 11.38 13.91 19.81 28.67 42.16 0 3.255 0.89 5.08 7.162 8.790 10.74 15.30 22.14 32.56 5 2.534 0.70 4.92 5.575 6.842 8.362 11.91 17.23 25.34 10 1.987 0.52 4.78 4.372 5.366 6.558 9.340 13.51 19.87 15 1.570 0.34 4.64 3.454 4.239 5.181 7.378 10.67 15.70 20 1.249 0.17 4.50 2.747 3.372 4.121 5.869 8.492 12.49 25 1.000 0.00 4.37 2.200 2.700 3.300 4.700 6.800 10.00 30 0.8059 0.16 4.25 1.773 2.176 2.660 3.788 5.480 8.059 35 0.6535 0.32 4.13 1.438 1.764 2.156 3.072 4.444 6.535 40 0.5330 0.47 4.02 1.173 1.439 1.759 2.505 3.624 5.330 45 0.4372 0.62 3.91 0.9618 1.180 1.443 2.055 2.972 4.372 50 0.3605 0.77 3.80 0.7932 0.973 1.190 1.694 2.451 3.606 55 0.2989 0.91 3.70 0.6575 0.807 0.9863 1.405 2.032 2.989 60 0.2490 1.05 3.60 0.5478 0.672 0.8217 1.170 1.693 2.490 65 0.2084 1.18 3.51 0.4586 0.562 0.6879 0.9797 1.417 2.084 70 0.1753 1.31 3.42 0.3857 0.473 0.5785 0.8239 1.192 1.753 75 0.1481 1.44 3.33 0.3258 0.399 0.4887 0.6960 1.007 1.481 80 0.1256 1.57 3.25 0.2764 0.339 0.4146 0.5905 0.8544 1.256 85 0.1070 1.69 3.16 0.2355 0.289 0.3532 0.5031 0.7278 1.070 90 0.09154 1.81 3.09 0.2014 0.247 0.3021 0.4303 0.6225 0.9154 95 0.07860 1.93 3.01 0.1729 0.212 0.2594 0.3694 0.5345 0.7860 100 0.06773 2.04 2.94 0.1490 0.182 0.2235 0.3183 0.4607 0.6773 105 0.05858 2.15 2.87 0.1289 0.158 0.1933 0.2753 0.3983 0.5858 110 0.05083 2.26 2.80 0.1118 0.137 0.1677 0.2389 0.3457 0.5083 115 0.04426 2.37 2.73 0.0974 0.1195 0.1461 0.2080 0.3010 0.4426 120 0.03866 2.47 2.67 0.0851 0.1044 0.1276 0.1817 0.2629 0.3866 125 0.03387 2.57 2.61 0.0745 0.0915 0.1118 0.1592 0.2303 0.3387 130 0.02977 2.67 2.55 0.0655 0.0804 0.0982 0.1399 0.2024 0.2977 135 0.02624 2.77 2.49 0.0577 0.0709 0.0866 0.1233 0.1784 0.2624 140 0.02319 2.86 2.43 0.0510 0.0626 0.0765 0.1090 0.1577 0.2319 145 0.02055 2.96 2.38 0.0452 0.0555 0.0678 0.0966 0.1398 0.2055 150 0.01826 3.05 2.33 0.0402 0.0493 0.0603 0.0858 0.1242 0.1826
1998 sep 04 50 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... table 13 resistance values at intermediate temperatures t oper ( c) r t /r 25 d r due to b-tolerance (%) tc (%/k) r 25 (k w ) 2322 640 .....; see table 17, note 1 6.123 6.153 6.223 - 40 25.78 6.81 6.09 309.4 386.8 567.2 - 35 19.13 6.16 5.89 229.5 286.9 420.8 - 30 14.32 5.53 5.70 171.8 214.8 315.0 - 25 10.82 4.93 5.52 129.8 162.3 238.0 - 20 8.245 4.35 5.35 98.93 123.7 181.4 - 15 6.335 3.80 5.19 76.02 95.03 139.4 - 10 4.907 3.26 5.03 58.88 73.60 107.9 - 5 3.830 2.74 4.88 45.95 57.44 84.25 0 3.011 2.24 4.73 36.13 45.16 66.24 5 2.384 1.76 4.60 28.60 35.76 52.45 10 1.900 1.30 4.46 22.80 28.50 41.81 15 1.525 0.85 4.34 18.30 22.87 33.55 20 1.231 0.42 4.21 14.77 18.47 27.09 25 1.000 0.00 4.10 12.00 15.00 22.00 30 0.8170 0.41 3.98 9.804 12.26 17.97 35 0.6712 0.80 3.88 8.054 10.07 14.77 40 0.5543 1.19 3.77 6.652 8.315 12.20 45 0.4602 1.57 3.67 5.522 6.903 10.12 50 0.3839 1.94 3.57 4.607 5.759 8.447 55 0.3219 2.30 3.48 3.862 4.828 7.081 60 0.2710 2.65 3.39 3.252 4.067 5.963 65 0.2293 2.99 3.30 2.751 3.439 5.044 70 0.1947 3.33 3.22 2.337 2.921 4.284 75 0.1661 3.66 3.14 1.993 2.492 3.654 80 0.1422 3.98 3.06 1.707 2.134 3.129 85 0.1223 4.29 2.99 1.467 1.834 2.690 90 0.1055 4.60 2.92 1.266 1.583 2.321 95 0.09135 4.90 2.85 1.096 1.370 2.010 100 0.07937 5.19 2.78 0.9524 1.190 1.746 105 0.06919 5.48 2.71 0.8302 1.038 1.522 110 0.06050 5.76 2.65 0.7260 0.9075 1.331 115 0.05307 6.04 2.59 0.6369 0.7961 1.168 120 0.04670 6.31 2.53 0.5604 0.7005 1.027 125 0.04121 6.57 2.47 0.4945 0.6181 0.9065
1998 sep 04 51 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... table 14 resistance values at intermediate temperatures t oper ( c) r t /r 25 d r due to b-tolerance (%) tc (%/k) r 25 (k w ) 2322 640 .....; see table 17, note 1 6.333 6.473 - 40 33.81 5.55 6.55 1116 1589 - 35 24.50 5.02 6.34 808.6 1151 - 30 17.93 4.52 6.15 591.7 842.8 - 25 13.25 4.03 5.96 437.1 622.6 - 20 9.875 3.56 5.78 325.9 464.1 - 15 7.425 3.10 5.61 245.0 349.0 - 10 5.630 2.67 5.45 185.8 264.6 - 5 4.304 2.24 5.29 142.0 202.3 0 3.315 1.84 5.14 109.4 155.8 5 2.573 1.44 4.99 84.91 120.9 10 2.011 1.07 4.85 66.37 94.53 15 1.583 0.70 4.72 52.24 74.40 20 1.254 0.34 4.59 41.39 58.95 25 1.000 0.00 4.46 33.00 47.00 30 0.8024 0.33 4.34 26.47 37.71 35 0.6474 0.66 4.23 21.37 30.43 40 0.5255 0.98 4.12 17.34 24.70 45 0.4288 1.28 4.01 14.15 20.15 50 0.3518 1.59 3.91 11.61 16.53 55 0.2901 1.88 3.81 9.572 13.63 60 0.2403 2.17 3.71 7.931 11.30 65 0.2001 2.45 3.62 6.603 9.404 70 0.1674 2.72 3.53 5.522 7.865 75 0.1406 2.99 3.44 4.639 6.607 80 0.1186 3.25 3.36 3.913 5.573 85 0.1004 3.51 3.28 3.315 4.721 90 0.08542 3.76 3.20 2.819 4.015 95 0.07292 4.00 3.13 2.406 3.427 100 0.06248 4.24 3.06 2.062 2.936 105 0.05372 4.47 2.98 1.773 2.525 110 0.04635 4.70 2.92 1.530 2.179 115 0.04013 4.93 2.85 1.342 1.886 120 0.03485 5.15 2.79 1.150 1.638 125 0.03037 5.36 2.73 1.002 1.427 130 0.02654 5.57 2.67 0.8757 1.247 135 0.02326 5.78 2.61 0.7675 1.093 140 0.02044 5.98 2.55 0.6746 0.9608 145 0.01802 6.18 2.50 0.5945 0.8468 150 0.01592 6.37 2.44 0.5254 0.7483
1998 sep 04 52 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... table 15 resistance values at intermediate temperatures t oper ( c) r t /r 25 d r due to b-tolerance (%) tc (%/k) r 25 (k w ) 2322 640 .....; see table 17, note 1 6.683 6.104 - 40 36.66 5.69 6.70 2493 3666 - 35 26.38 5.15 6.49 1794 2638 - 30 19.17 4.63 6.29 1303 1917 - 25 14.06 4.13 6.10 956.2 1406 - 20 10.41 3.65 5.92 708.0 1041 - 15 7.779 3.18 5.74 528.9 777.9 - 10 5.861 2.73 5.57 398.5 586.1 - 5 4.453 2.30 5.41 302.8 445.3 0 3.409 1.88 5.26 231.8 340.9 5 2.631 1.48 5.11 178.9 263.1 10 2.044 1.09 4.97 139.0 204.4 15 1.600 0.72 4.83 108.8 160.0 20 1.261 0.35 4.70 85.74 126.1 25 1.000 0.00 4.57 68.00 100.0 30 0.7981 0.34 4.45 54.27 79.81 35 0.6408 0.67 4.35 43.57 64.08 40 0.5175 1.00 4.22 35.19 51.74 45 0.4202 1.32 4.11 28.57 42.02 50 0.3431 1.63 4.00 23.33 34.31 55 0.2816 1.93 3.90 19.15 28.16 60 0.2322 2.22 3.80 15.79 23.22 65 0.1925 2.51 3.71 13.09 19.25 70 0.1602 2.79 3.62 10.90 16.03 75 0.1340 3.06 3.53 9.114 13.40 80 0.1126 3.33 3.45 7.655 11.26 85 0.09496 3.59 3.36 6.457 9.496 90 0.08042 3.85 3.28 5.469 8.042 95 0.06837 4.10 3.21 4.649 6.837 100 0.05835 4.35 3.13 3.968 5.835 105 0.04998 4.59 3.06 3.399 4.998 110 0.04296 4.82 2.99 2.921 4.296 115 0.03705 5.05 2.92 2.519 3.705 120 0.03206 5.28 2.86 2.180 3.206 125 0.02783 5.50 2.80 1.892 2.783
1998 sep 04 53 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... table 16 resistance values at intermediate temperatures t oper ( c) r t /r 25 d r due to b-tolerance (%) tc (%/k) r 25 (k w ) 2322 640 .....; see table 17, note 1 6.154 6.224 - 40 41.02 10.10 6.89 6153 9024 - 35 29.29 9.12 6.68 4394 6444 - 30 21.12 8.18 6.48 3168 4646 - 25 15.37 7.28 6.29 2305 3381 - 20 11.28 6.42 6.11 1693 2483 - 15 8.358 5.59 5.93 1254 1839 - 10 6.242 4.80 5.76 936.4 1373 - 5 4.700 4.03 5.60 705.0 1034 0 3.567 3.30 5.44 535.0 784.7 5 2.727 2.59 5.29 409.1 600.0 10 2.101 1.90 5.15 315.1 462.1 15 1.629 1.25 5.01 244.4 358.4 20 1.272 0.61 4.88 190.8 279.9 25 1.000 0.00 4.75 150.0 220.0 30 0.7910 0.59 4.62 118.6 174.0 35 0.6295 1.18 4.51 94.42 138.5 40 0.5039 1.74 4.39 75.58 110.9 45 0.4056 2.30 4.28 60.85 89.24 50 0.3283 2.84 4.17 49.25 72.24 55 0.2672 3.37 4.07 40.08 58.78 60 0.2185 3.89 3.97 32.78 48.08 65 0.1796 4.40 3.87 26.94 39.51 70 0.1483 4.90 3.78 22.25 32.63 75 0.1231 5.39 3.69 18.46 27.07 80 0.1025 5.86 3.60 15.38 22.56 85 0.08582 6.33 3.52 12.87 18.88 90 0.07213 6.79 3.44 10.82 15.87 95 0.06086 7.24 3.36 9.129 13.39 100 0.05155 7.68 3.28 7.732 11.34 105 0.04383 8.11 3.21 6.574 9.642 110 0.03740 8.53 3.14 5.610 8.228 115 0.03203 8.94 3.07 4.804 7.046 120 0.02752 9.35 3.00 4.128 6.054 125 0.02372 9.75 2.94 3.559 5.219
1998 sep 04 54 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... table 17 resistance values at intermediate temperatures note to tables 5 through 17 1. replace dot in last 5 digits of catalogue number by a number according to the following details and depending on tolerance on required r 25 -value: 4 for a tolerance of 2%; 6 for a tolerance of 3%; 3 for a tolerance of 5%; 2 for a tolerance of 10%. t oper ( c) r t /r 25 d r due to b-tolerance (%) tc (%/k) r 25 (k w ) 2322 640 .....; see note 1 6.334 6.474 - 40 48.62 6.22 7.13 16044 22850 - 35 34.19 5.63 6.91 11282 16068 - 30 24.28 5.06 6.71 8013 11413 - 25 17.42 4.51 6.52 5747 8185 - 20 12.61 3.98 6.33 4161 5926 - 15 9.211 3.47 6.15 3040 4329 - 10 6.788 2.98 5.98 2240 3190 - 5 5.045 2.51 5.82 1665 2371 0 3.781 2.06 5.66 1248 1776 5 2.855 1.62 5.50 942.3 1342 10 2.173 1.19 5.36 717.1 1021 15 1.666 0.78 5.22 549.8 783.0 20 1.286 0.38 5.08 424.5 604.6 25 1.000 0.00 4.95 330.0 470.0 30 0.7825 0.37 4.82 258.2 367.8 35 0.6163 0.74 4.70 203.4 289.6 40 0.4883 1.09 4.59 161.1 229.5 45 0.3892 1.44 4.47 128.4 182.9 50 0.3120 1.77 4.36 103.0 146.7 55 0.2515 2.10 4.26 83.00 118.2 60 0.2038 2.43 4.15 67.26 95.80 65 0.1660 2.74 4.06 54.79 78.03 70 0.1359 3.05 3.96 44.86 63.88 75 0.1118 3.35 3.87 36.90 52.55 80 0.09240 3.64 3.78 30.49 43.43 85 0.07670 3.93 3.69 25.31 36.05 90 0.06395 4.21 3.61 21.10 30.06 95 0.05354 4.48 3.53 17.67 25.16 100 0.04501 4.75 3.45 14.85 21.15 105 0.03798 5.01 3.37 12.53 17.85 110 0.03218 5.27 3.30 10.70 15.12 115 0.02736 5.52 3.23 9.029 12.86 120 0.02335 5.77 3.16 7.704 10.97 125 0.01999 6.01 3.09 6.597 9.396
1998 sep 04 55 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... electrical characteristics unless otherwise stated, measurements are in accordance with iec publication 60539 , see also table 3. stability is in accordance with cecc 43 000 and iec 60068-2 , see table 18. note 1. response time in silicone oil ms200/50. this is the time needed for the sensor to reach 63.2% of the total temperature difference when subjected to a temperature change from 25 c in air to 85 c in oil. derating parameter value standard selection tolerance on r 25 2%; 3%; 5% and 10% climatic category 40/125/56 maximum dissipation 500 mw dissipation factor d (for information only) 7 mw/k response time (for information only); note 1 1.2 s thermal time constant t (for information only) 11 s operating temperature range: at zero dissipation; continuously - 40 to +125 c at zero dissipation 150 c at maximum dissipation 0 to +55 c fig.2 power derating curve. mlc342 055 40 85 125 t ( c) o 100 0 p (%) amb
1998 sep 04 56 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... fig.3 temperature deviation as a function of the ambient temperature. curves valid for 2.2 to 10 k w . curve 1: d r 25 /r 25 = 5%. curve 2: d r 25 /r 25 = 3%. curve 3: d r 25 /r 25 = 2%. curve 4: d r 25 /r 25 = 1% (for 2322 640 5.... series only). handbook, halfpage 40 160 3.0 0 1.0 2.0 2.5 0.5 1.5 mlc378 0 40 80 120 1 2 4 3 d t (k) o t ( c) fig.4 temperature deviation as a function of the ambient temperature. curves valid for 12 to 22 k w . curve 1: d r 25 /r 25 = 5%. curve 2: d r 25 /r 25 = 3%. curve 3: d r 25 /r 25 = 2%. handbook, halfpage 40 160 0 2 4 5 1 3 mlc380 0 40 80 120 1 2 3 d t (k) o t ( c) fig.5 temperature deviation as a function of the ambient temperature. curves valid for 33 to 47 k w . curve 1: d r 25 /r 25 = 5%. curve 2: d r 25 /r 25 = 3%. curve 3: d r 25 /r 25 = 2%. curve 4: d r 25 /r 25 = 1% (for 2322 640 5.... series only). handbook, halfpage 40 160 4.0 0 1.0 2.0 2.5 0.5 1.5 3.5 3.0 mlc379 0 40 80 120 1 2 3 d t (k) o t ( c) 4 fig.6 temperature deviation as a function of the ambient temperature. curves valid for 68 to 100 k w . curve 1: d r 25 /r 25 = 5%. curve 2: d r 25 /r 25 = 3%. curve 3: d r 25 /r 25 = 2%. curve 4: d r 25 /r 25 = 1% (for 2322 640 5.... series only). handbook, halfpage 40 160 4.0 0 1.0 2.0 2.5 0.5 1.5 3.5 3.0 mlc656 0 40 80 120 3 d t (k) o t ( c) 4 2 1
1998 sep 04 57 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... fig.7 temperature deviation as a function of the ambient temperature. curves valid for 150 to 220 k w . curve 1: d r 25 /r 25 = 5%. curve 2: d r 25 /r 25 = 3%. curve 3: d r 25 /r 25 = 2%. handbook, halfpage 40 160 6 0 2 4 5 1 3 mlc381 0 40 80 120 3 d t (k) o t ( c) 2 1 fig.8 temperature deviation as a function of the ambient temperature. curves valid for 330 to 470 k w . curve 1: d r 25 /r 25 = 5%. curve 2: d r 25 /r 25 = 3%. curve 3: d r 25 /r 25 = 2%. handbook, halfpage 40 160 4.0 0 1.0 2.0 2.5 0.5 1.5 3.5 3.0 mlc657 0 40 80 120 1 3 d t (k) o t ( c) 2
1998 sep 04 58 bc components product speci?cation ntc thermistors, accuracy line 2322 640 6.... tests and requirements essentially all tests are carried out in accordance with iec publication 60068-2; environmental testing , except where indicated. table 18 stability tests notes 1. for r 25 3 100 k w the drift requirement is d r/r < 5%. 2. for r 25 from 2.2 k w to 10 k w , requirement is 2% max. cecc 32 100 clause iec 60068-2 test method test procedure requirements d3; 4.20.1 endurance 25 c; 1000 hours d r/r < 1% 1 endurance - 40 c; 1000 hours d r/r < 1% 539 endurance 500 mw; 55 c; 1000 hours d r/r < 3% (note 1) 2 dry heat, (steady state) 125 c; 1000 hours d r/r < 3% d1; 4.19 3 damp heat (steady state) 56 days at 40 c; 90 to 95% rh d r/r < 3% c2; 4.14 14 rapid change of temperature - 40 c to +125 c; 50 cycles d r/r < 2% other applicable tests 21 robustness of leads: d r/r 1% tensile strength loading force 10 n bending loading force 5 n 58 soldering: d r/r 1% (note 2) solderability 240 c max.; duration 4 s max. resistance to heat 265 c max.; duration 5 s max. 27 impact free fall; 1 m d r/r 1% 29 shock 490 m/s; half sinewave d r/r 1% 45 resistance to solvent (isopropanol) ambient temp for 5 min; 5 n with hydrophylic cotton wool no traces of lacquer on cotton wool 6 vibration 1.5 mm peak to peak: 10 to 58 hz 10 gp: 50 to 500 hz 1 octave/min. 2 hours in each direction in three orthogonal directions no visible damage d r/r < 1% 2 in?ammability 1980, needle ?ame test non-?ammable

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