NTC 50k β3950 resistance table (°F)
Resistance in ohms of an NTC thermistor with R₂₅ = 50kΩ and β = 3950 K, calculated with the Beta model from -40 °F to 257 °F. Real parts follow their manufacturer’s R/T table, which can differ from the Beta model by a few percent far from 25 °C; use these values for design estimates and check critical points against the datasheet.
Each row is a 10-degree step; the column adds the units digit (subtracts it in rows below zero). Example: 100 + 5 → 105 °F.
| °F | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|
| -40 | 2009300 | |||||||||
| -30 | 1354600 | 1407900 | 1463600 | 1521700 | 1582500 | 1645900 | 1712300 | 1781600 | 1854200 | 1930000 |
| -20 | 929710 | 964630 | 1001000 | 1039000 | 1078500 | 1119800 | 1162800 | 1207700 | 1254600 | 1303500 |
| -10 | 648880 | 672160 | 696380 | 721580 | 747820 | 775140 | 803580 | 833210 | 864070 | 896220 |
| -0 | 460020 | 475800 | 492190 | 509220 | 526920 | 545320 | 564440 | 584330 | 605010 | 626510 |
| 0 | 460020 | 444830 | 430210 | 416120 | 402560 | 389490 | 376900 | 364770 | 353080 | 341810 |
| 10 | 330940 | 320470 | 310370 | 300630 | 291230 | 282160 | 273420 | 264980 | 256830 | 248970 |
| 20 | 241370 | 234040 | 226970 | 220130 | 213530 | 207150 | 200980 | 195030 | 189270 | 183710 |
| 30 | 178330 | 173130 | 168100 | 163240 | 158540 | 153990 | 149590 | 145330 | 141210 | 137220 |
| 40 | 133360 | 129620 | 126000 | 122500 | 119110 | 115820 | 112640 | 109560 | 106570 | 103680 |
| 50 | 100870 | 98155 | 95520 | 92966 | 90489 | 88088 | 85759 | 83501 | 81311 | 79186 |
| 60 | 77124 | 75124 | 73183 | 71299 | 69471 | 67696 | 65974 | 64301 | 62677 | 61099 |
| 70 | 59568 | 58080 | 56634 | 55230 | 53866 | 52540 | 51252 | 50000 | 48783 | 47600 |
| 80 | 46450 | 45332 | 44245 | 43187 | 42159 | 41159 | 40186 | 39239 | 38318 | 37422 |
| 90 | 36550 | 35702 | 34876 | 34072 | 33290 | 32528 | 31786 | 31064 | 30360 | 29675 |
| 100 | 29008 | 28358 | 27725 | 27108 | 26507 | 25922 | 25351 | 24795 | 24253 | 23725 |
| 110 | 23210 | 22708 | 22218 | 21741 | 21275 | 20821 | 20379 | 19947 | 19526 | 19115 |
| 120 | 18714 | 18323 | 17941 | 17568 | 17205 | 16850 | 16504 | 16166 | 15836 | 15514 |
| 130 | 15199 | 14892 | 14592 | 14299 | 14013 | 13734 | 13461 | 13194 | 12934 | 12679 |
| 140 | 12431 | 12188 | 11950 | 11718 | 11492 | 11270 | 11053 | 10841 | 10634 | 10432 |
| 150 | 10234 | 10040 | 9851 | 9665.9 | 9484.8 | 9307.7 | 9134.4 | 8965 | 8799.2 | 8637 |
| 160 | 8478.3 | 8323 | 8171 | 8022.3 | 7876.8 | 7734.3 | 7594.9 | 7458.4 | 7324.8 | 7194 |
| 170 | 7065.9 | 6940.6 | 6817.8 | 6697.6 | 6579.8 | 6464.5 | 6351.6 | 6241 | 6132.6 | 6026.5 |
| 180 | 5922.5 | 5820.7 | 5720.9 | 5623.1 | 5527.3 | 5433.4 | 5341.3 | 5251.1 | 5162.8 | 5076.1 |
| 190 | 4991.2 | 4907.9 | 4826.3 | 4746.3 | 4667.9 | 4591 | 4515.6 | 4441.6 | 4369.1 | 4297.9 |
| 200 | 4228.2 | 4159.8 | 4092.7 | 4026.8 | 3962.3 | 3898.9 | 3836.8 | 3775.8 | 3715.9 | 3657.2 |
| 210 | 3599.6 | 3543.1 | 3487.6 | 3433.1 | 3379.7 | 3327.2 | 3275.7 | 3225.2 | 3175.6 | 3126.9 |
| 220 | 3079 | 3032.1 | 2986 | 2940.7 | 2896.2 | 2852.6 | 2809.7 | 2767.6 | 2726.2 | 2685.6 |
| 230 | 2645.7 | 2606.5 | 2568 | 2530.2 | 2493 | 2456.5 | 2420.6 | 2385.4 | 2350.7 | 2316.7 |
| 240 | 2283.2 | 2250.4 | 2218 | 2186.3 | 2155.1 | 2124.4 | 2094.2 | 2064.6 | 2035.4 | 2006.8 |
| 250 | 1978.6 | 1950.9 | 1923.7 | 1896.9 | 1870.6 | 1844.7 | 1819.2 | 1794.2 |
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