深圳市敏创电子有限公司

NTC热敏电阻的阻值与温度对照表主要关注几个方面：温度、NTC阻值、阻值公差及B值。

 

我们通知情况所说的阻值即为NTC的的标称阻值，大多数情况下即25℃时的阻值，它提供了一个方便的参考点。例如，10K的NTC热敏电阻即它在25℃时的阻值为10KΩ，当然有也有些特殊的阻值是以其它温度为标准的，参见RT表说明。

 

另一个重要特征是“B”值。B值是材料常数，其由制成它的陶瓷材料确定，并描述在两个温度点之间的特定温度范围内的电阻（R/T）曲线的梯度。每个热敏电阻材料将具有不同的材料常数，因此具有不同的电阻与温度曲线。然后，B值将定义第一温度或基点（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值将使热敏电阻材料在T1和T2的范围内保持恒定。即B：T1/T2或B：25/85，典型的NTC热敏电阻B值在约3000和约5000之间。

 

本R/T表（阻值/温度）对照表数据：

1、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：3380K

Temp.	Rmax	Rnor	Rmin
(deg. C)	(k Ohms)	(k Ohms)	(k Ohms)
-40	218.8661	202.2693	186.4637
-39	206.6232	191.0637	176.2341
-38	195.1479	180.5546	166.6349
-37	184.3872	170.6944	157.6234
-36	174.2918	161.4387	149.1596
-35	164.8167	152.7468	141.2069
-34	155.9196	144.5807	133.7312
-33	147.5616	136.9052	126.7008
-32	139.7068	129.6879	120.0864
-31	132.3217	122.8985	113.8609
-30	125.3753	116.5089	107.9988
-29	118.8388	110.4932	102.4769
-28	112.6855	104.8272	97.2731
-27	106.8905	99.4883	92.3673
-26	101.4309	94.4558	87.7405
-25	96.2851	89.7101	83.3752
-24	91.4333	85.2332	79.255
-23	86.8568	81.0082	75.3646
-22	82.5383	77.0194	71.6899
-21	78.4619	73.2523	68.2176
-20	74.6123	69.6931	64.9354
-19	70.9758	66.3291	61.8316
-18	67.5392	63.1485	58.8956
-17	64.2904	60.1402	56.1173
-16	61.2179	57.2939	53.4873
-15	58.3113	54.5998	50.9968
-14	55.5605	52.049	48.6376
-13	52.9563	49.633	46.402
-12	50.4901	47.3439	44.2828
-11	48.1537	45.1743	42.2733
-10	45.9395	43.1172	40.3671
-9	43.8406	41.1663	38.5585
-8	41.8501	39.3153	36.8417
-7	39.962	37.5587	35.2117
-6	38.1703	35.891	33.6635
-5	36.4696	34.3074	32.1927
-4	34.8547	32.8029	30.7948
-3	33.3209	31.3734	29.4659
-2	31.8635	30.0145	28.2021
-1	30.4785	28.7225	27
0	29.1618	27.4936	25.8561
1	27.9096	26.3245	24.7674
2	26.7184	25.2119	23.7308
3	25.585	24.1527	22.7437
4	24.5062	23.1442	21.8032
5	23.479	22.1835	20.9071
6	22.5008	21.2682	20.0529
7	21.5689	20.3959	19.2385
8	20.6809	19.5644	18.4618
9	19.8345	18.7714	17.7209
10	19.0275	18.0151	17.0139
11	18.2579	17.2935	16.3391
12	17.5237	16.6048	15.6948
13	16.8232	15.9475	15.0795
14	16.1545	15.3198	14.4918
15	15.5162	14.7203	13.9303
16	14.9066	14.1475	13.3936
17	14.3243	13.6003	12.8806
18	13.7679	13.0772	12.39
19	13.2362	12.5771	11.9208
20	12.728	12.0988	11.472
21	12.242	11.6413	11.0425
22	11.7772	11.2037	10.6314
23	11.3326	10.7848	10.2378
24	10.9072	10.3839	9.861
25	10.5	10	9.5
26	10.1178	9.6324	9.1473
27	9.7515	9.2802	8.8096
28	9.4005	8.9428	8.4862
29	9.0639	8.6195	8.1764
30	8.7412	8.3096	7.8795
31	8.4317	8.0124	7.5949
32	8.1348	7.7275	7.3222
33	7.8499	7.4541	7.0606
34	7.5764	7.1919	6.8098
35	7.3139	6.9403	6.5692
36	7.0619	6.6987	6.3383
37	6.8199	6.4669	6.1168
38	6.5874	6.2442	5.9041
39	6.364	6.0304	5.7
40	6.1494	5.825	5.5039
41	5.9431	5.6276	5.3156
42	5.7448	5.438	5.1347
43	5.5541	5.2557	4.9609
44	5.3707	5.0804	4.7938
45	5.1943	4.9119	4.6332
46	5.0246	4.7498	4.4788
47	4.8612	4.5939	4.3304
48	4.7041	4.4439	4.1876
49	4.5527	4.2995	4.0502
50	4.407	4.1605	3.918
51	4.2667	4.0268	3.7908
52	4.1316	3.898	3.6683
53	4.0014	3.7739	3.5505
54	3.876	3.6544	3.4369
55	3.7551	3.5393	3.3276
56	3.6386	3.4284	3.2223
57	3.5262	3.3215	3.1209
58	3.4179	3.2185	3.0231
59	3.3135	3.1191	2.9289
60	3.2127	3.0234	2.838
61	3.1155	2.931	2.7505
62	3.0217	2.8419	2.666
63	2.9312	2.7559	2.5846
64	2.8439	2.6729	2.506
65	2.7595	2.5929	2.4302
66	2.6781	2.5156	2.3571
67	2.5994	2.441	2.2865
68	2.5235	2.369	2.2183
69	2.4501	2.2994	2.1525
70	2.3792	2.2322	2.089
71	2.3107	2.1673	2.0277
72	2.2445	2.1046	1.9684
73	2.1805	2.044	1.9112
74	2.1186	1.9854	1.8559
75	2.0588	1.9288	1.8024
76	2.001	1.874	1.7508
77	1.945	1.8211	1.7008
78	1.8909	1.7699	1.6526
79	1.8385	1.7204	1.6059
80	1.7878	1.6725	1.5607
81	1.7388	1.6262	1.5171
82	1.6913	1.5813	1.4748
83	1.6454	1.5379	1.4339
84	1.6009	1.4959	1.3944
85	1.5578	1.4553	1.3561
86	1.516	1.4159	1.3191
87	1.4756	1.3778	1.2832
88	1.4365	1.3408	1.2485
89	1.3985	1.3051	1.2148
90	1.3617	1.2704	1.1822
91	1.3261	1.2368	1.1507
92	1.2916	1.2043	1.1201
93	1.2581	1.1728	1.0905
94	1.2256	1.1422	1.0618
95	1.1941	1.1126	1.034
96	1.1636	1.0839	1.007
97	1.134	1.056	0.9809
98	1.1053	1.029	0.9556
99	1.0774	1.0028	0.931
100	1.0504	0.9774	0.9071
101	1.0241	0.9527	0.884
102	0.9987	0.9288	0.8616
103	0.9739	0.9055	0.8398
104	0.9499	0.883	0.8187
105	0.9266	0.8611	0.7982
106	0.904	0.8399	0.7784
107	0.882	0.8193	0.7591
108	0.8607	0.7992	0.7403
109	0.8399	0.7798	0.7221
110	0.8198	0.7609	0.7045
111	0.8002	0.7425	0.6873
112	0.7812	0.7247	0.6706
113	0.7627	0.7074	0.6545
114	0.7447	0.6906	0.6387
115	0.7273	0.6742	0.6235
116	0.7103	0.6583	0.6086
117	0.6938	0.6429	0.5942
118	0.6777	0.6278	0.5801
119	0.6621	0.6132	0.5665
120	0.6469	0.599	0.5533