通常情况所说的阻值即为NTC的的标称阻值，大大都情况下即25℃时的阻值，它提供了一个便当的参考点 。例如，10K的NTC热敏电阻即它在25℃时的阻值为10KΩ，虽然有也有些特殊的阻值是以其它温度为标准的，拜见RT表说明 。
另一个重要特征是“B”值 。B值是质料常数，其由制成它的陶瓷质料确定，并描述在两个温度点之间的特定温度规模内的电阻（R/T）曲线的梯度 。每个热敏电阻质料将具有差别的质料常数，因此具有差别的电阻与温度曲线 。然后，B值将界说第一温度或基点（通常为25℃）的热敏电阻电阻值（称为T1），以及第二温度点（例如50℃，称为T2 ）的热敏电阻电阻值 。因此，B值将使热敏电阻质料在T1和T2的规模内坚持恒定 。即B：T1/T2或B：25/85，典范的NTC热敏电阻B值在约3000和约5000之间 。
本R/T表（阻值/温度）参数比照表：
1、标称阻值：本表标称阻值在25℃时为：10KΩ
2、阻值公差：本表的阻值允许公差为：±1%
3、B值：本表的B值在25/50℃时为：3950K
| T(温度) | Rmin | Rnom | Rmax |
| -40 | 268250 | 281160 | 294650 |
| -39 | 252370 | 264320 | 276810 |
| -38 | 237540 | 248610 | 260170 |
| -37 | 223690 | 233950 | 244650 |
| -36 | 210750 | 220260 | 230170 |
| -35 | 198640 | 207460 | 216640 |
| -34 | 187310 | 195490 | 204010 |
| -33 | 176710 | 184290 | 192190 |
| -32 | 166770 | 173810 | 181140 |
| -31 | 157460 | 164000 | 170790 |
| -30 | 148730 | 154800 | 161110 |
| -29 | 140460 | 146100 | 151950 |
| -28 | 132730 | 137960 | 143390 |
| -27 | 125480 | 130350 | 135390 |
| -26 | 118690 | 123210 | 127890 |
| -25 | 112320 | 116530 | 120880 |
| -24 | 106340 | 110250 | 114300 |
| -23 | 100730 | 104370 | 108130 |
| -22 | 95455 | 98839 | 102330 |
| -21 | 90493 | 93644 | 96894 |
| -20 | 85825 | 88758 | 91781 |
| -19 | 81506 | 84239 | 87056 |
| -18 | 77414 | 79961 | 82584 |
| -17 | 73536 | 75910 | 78353 |
| -16 | 69863 | 72075 | 74350 |
| -15 | 66381 | 68443 | 70561 |
| -14 | 63082 | 65003 | 66975 |
| -13 | 59956 | 61745 | 63581 |
| -12 | 56992 | 58659 | 60368 |
| -11 | 54183 | 55736 | 57326 |
| -10 | 51521 | 52966 | 54447 |
| -9 | 49013 | 50360 | 51738 |
| -8 | 46631 | 47885 | 49168 |
| -7 | 44367 | 45535 | 46728 |
| -6 | 42216 | 43303 | 44414 |
| -5 | 40174 | 41185 | 42218 |
| -4 | 38234 | 39175 | 40136 |
| -3 | 36391 | 37267 | 38160 |
| -2 | 34642 | 35456 | 36286 |
| -1 | 32981 | 33738 | 34509 |
| 0 | 31403 | 32108 | 32824 |
| 1 | 29890 | 30544 | 31209 |
| 2 | 28459 | 29066 | 29684 |
| 3 | 27104 | 27669 | 28242 |
| 4 | 25822 | 26346 | 26878 |
| 5 | 24608 | 25095 | 25588 |
| 6 | 23458 | 23910 | 24368 |
| 7 | 22368 | 22788 | 23212 |
| 8 | 21335 | 21724 | 22118 |
| 9 | 20355 | 20716 | 21081 |
| 10 | 19425 | 19760 | 20098 |
| 11 | 18546 | 18856 | 19169 |
| 12 | 17710 | 17997 | 18288 |
| 13 | 16915 | 17181 | 17450 |
| 14 | 16159 | 16405 | 16653 |
| 15 | 15439 | 15667 | 15896 |
| 16 | 14754 | 14965 | 15177 |
| 17 | 14102 | 14297 | 14493 |
| 18 | 13482 | 13662 | 13843 |
| 19 | 12892 | 13058 | 13224 |
| 20 | 12330 | 12483 | 12636 |
| 21 | 11795 | 11936 | 12077 |
| 22 | 11286 | 11415 | 11545 |
| 23 | 10801 | 10920 | 11039 |
| 24 | 10340 | 10449 | 10558 |
| 25 | 9900 | 10000 | 10100 |
| 26 | 9472.9 | 9572.8 | 9672.8 |
| 27 | 9066.2 | 9165.9 | 9265.7 |
| 28 | 8679.1 | 8778.3 | 8877.8 |
| 29 | 8310.4 | 8409.1 | 8508.1 |
| 30 | 7959.2 | 8057.2 | 8155.5 |
| 31 | 7624.6 | 7721.8 | 7819.4 |
| 32 | 7305.7 | 7402 | 7498.8 |
| 33 | 7001.8 | 7097 | 7192.9 |
| 34 | 6712 | 6806.2 | 6901 |
| 35 | 6435.7 | 6528.7 | 6622.4 |
| 36 | 6172.1 | 6263.9 | 6356.4 |
| 37 | 5920.6 | 6011.1 | 6102.4 |
| 38 | 5680.6 | 5769.8 | 5859.9 |
| 39 | 5451.6 | 5539.4 | 5628.2 |
| 40 | 5232.9 | 5319.4 | 5406.8 |
| 41 | 5024.1 | 5109.2 | 5195.2 |
| 42 | 4824.6 | 4908.3 | 4993 |
| 43 | 4634.1 | 4716.4 | 4799.6 |
| 44 | 4452.1 | 4532.9 | 4614.7 |
| 45 | 4278.1 | 4357.4 | 4437.8 |
| 46 | 4111.8 | 4189.7 | 4268.6 |
| 47 | 3952.8 | 4029.2 | 4106.7 |
| 48 | 3800.7 | 3875.7 | 3951.7 |
| 49 | 3655.2 | 3728.8 | 3803.4 |
| 50 | 3516.1 | 3588.2 | 3661.4 |
| 51 | 3382.9 | 3453.6 | 3525.4 |
| 52 | 3255.4 | 3324.7 | 3395.1 |
| 53 | 3133.4 | 3201.2 | 3270.2 |
| 54 | 3016.6 | 3083 | 3150.6 |
| 55 | 2904.7 | 2969.8 | 3036 |
| 56 | 2797.5 | 2861.3 | 2926.2 |
| 57 | 2694.9 | 2757.3 | 2820.8 |
| 58 | 2596.5 | 2657.6 | 2719.9 |
| 59 | 2502.3 | 2562.1 | 2623 |
| 60 | 2411.9 | 2470.4 | 2530.1 |
| 61 | 2325.4 | 2382.7 | 2441.1 |
| 62 | 2242.5 | 2298.5 | 2355.7 |
| 63 | 2162.9 | 2217.7 | 2273.7 |
| 64 | 2086.5 | 2140.1 | 2194.9 |
| 65 | 2013.2 | 2065.7 | 2119.3 |
| 66 | 1942.9 | 1994.2 | 2046.6 |
| 67 | 1875.3 | 1925.5 | 1976.8 |
| 68 | 1810.5 | 1859.5 | 1909.8 |
| 69 | 1748.2 | 1796.2 | 1845.3 |
| 70 | 1688.3 | 1735.2 | 1783.3 |
| 71 | 1630.7 | 1676.6 | 1723.6 |
| 72 | 1575.4 | 1620.3 | 1666.3 |
| 73 | 1522.3 | 1566.1 | 1611.1 |
| 74 | 1471.2 | 1514.1 | 1558.1 |
| 75 | 1422.1 | 1464 | 1507.1 |
| 76 | 1374.8 | 1415.9 | 1458 |
| 77 | 1329.4 | 1369.5 | 1410.7 |
| 78 | 1285.7 | 1325 | 1365.2 |
| 79 | 1243.7 | 1282.1 | 1321.5 |
| 80 | 1203.3 | 1240.8 | 1279.3 |
| 81 | 1164.5 | 1201.2 | 1238.9 |
| 82 | 1127.2 | 1163 | 1199.9 |
| 83 | 1091.2 | 1126.2 | 1162.3 |
| 84 | 1056.5 | 1090.8 | 1126.1 |
| 85 | 1023.1 | 1056.6 | 1091.2 |
| 86 | 990.92 | 1023.7 | 1057.5 |
| 87 | 959.88 | 991.94 | 1025 |
| 88 | 929.95 | 961.31 | 993.62 |
| 89 | 901.1 | 931.76 | 963.37 |
| 90 | 873.27 | 903.26 | 934.18 |
| 91 | 846.37 | 875.7 | 905.95 |
| 92 | 820.44 | 849.12 | 878.71 |
| 93 | 795.42 | 823.47 | 852.42 |
| 94 | 771.28 | 798.71 | 827.04 |
| 95 | 747.99 | 774.82 | 802.54 |
| 96 | 725.52 | 751.76 | 778.87 |
| 97 | 703.83 | 729.49 | 756.02 |
| 98 | 682.88 | 707.99 | 733.95 |
| 99 | 662.66 | 687.22 | 712.63 |
| 100 | 643.14 | 667.17 | 692.02 |
| 101 | 624.32 | 647.83 | 672.15 |
| 102 | 606.13 | 629.13 | 652.94 |
| 103 | 588.55 | 611.06 | 634.36 |
| 104 | 571.56 | 593.58 | 616.38 |
| 105 | 555.13 | 576.67 | 599 |
| 106 | 539.24 | 560.32 | 582.17 |
| 107 | 523.87 | 544.5 | 565.89 |
| 108 | 509.01 | 529.2 | 550.13 |
| 109 | 494.62 | 514.38 | 534.88 |
| 110 | 480.71 | 500.05 | 520.11 |
| 111 | 467.21 | 486.14 | 505.78 |
| 112 | 454.15 | 472.68 | 491.91 |
| 113 | 441.52 | 459.65 | 478.48 |
| 114 | 429.3 | 447.04 | 465.48 |
| 115 | 417.47 | 434.84 | 452.89 |
| 116 | 406.02 | 423.02 | 440.7 |
| 117 | 394.93 | 411.58 | 428.89 |
| 118 | 384.2 | 400.5 | 417.45 |
| 119 | 373.81 | 389.77 | 406.37 |
| 120 | 363.75 | 379.37 | 395.63 |
| 121 | 354.01 | 369.32 | 385.24 |
| 122 | 344.58 | 359.57 | 375.17 |
| 123 | 335.44 | 350.12 | 365.4 |
| 124 | 326.58 | 340.96 | 355.93 |
| 125 | 317.99 | 332.07 | 346.74 |
