|
NTC Interchangeable Thermistor |
|
|
WECC's interchangeable
NTC Thermistors offers easy interchangeability over
a large temperature range (usually 0 - 70 °C).
Interchangeable NTC Thermistors offer very stable
and accurate temperature sensing for applications
such as temperature compensation, and temperature
measurement and control.
Applications:
Features
-
Curve Matched
-
High Quality
-
Low Cost
-
Small Size
-
Epoxy
Encapsulated
Specifications
|
|
Resistance
@ 25
°C (Ohms)
|
Temperature Tolerance From 0 °C to 70 °C
|
Curve Type
(see table below)
|
|
+/-0.2 °C
|
+/-
0.5 °C |
+/-1.0
°C |
|
Part Number
|
Part
Number |
Part
Number |
| 2,252 |
WNC2502 |
WNC2503 |
WNC2504 |
H |
| 3,000 |
WNC3002 |
WNC3003 |
WNC3004 |
H |
| 4,000 |
WNC4002 |
WNC4003 |
WNC4004 |
H |
| 5,000 |
WNC5002 |
WNC5003 |
WNC5004 |
H |
| 6,000 |
WNC6002 |
WNC6003 |
WNC6004 |
H |
| 7,000 |
WNC7002 |
WNC7003 |
WNC7004 |
H |
| 8,000 |
WNC8002 |
WNC8003 |
WNC8004 |
H |
| 9,000 |
WNC9002 |
WNC9003 |
WNC9004 |
H |
| 10,000 |
WNC1012 |
WNC1013 |
WNC1014 |
H |
| 20,000 |
WNC2012 |
WNC2013 |
WNC2014 |
H |
| 30,000 |
WNC3012 |
WNC3013 |
WNC3014 |
H |
|
Terminology:
Dissipation Constant
- The amount of power through self-heating necessary
to raise the thermistor body 1 °C. (Units in Mw/
°C)
Time Constant
- The
time, in seconds, required for a thermistor dissipating
negligible power to change 63% of the total difference
between its initial and final body temperature when
subjected to a change in temperature.
|
INTERCHANGEABLE
THERMISTOR DATA
Curve "H"
(0-70 in 1
°C increments)
Resistance
Ratio vs Temperature
|
Temperature
|
Resistance
Ratio
(R/R25)
|
Temperature
|
Resistance
Ratio
(R/R25)
|
|
°C
|
°F
|
°C
|
°F
|
|
0
|
32
|
3.2657
|
36
|
97
|
0.6268
|
|
1
|
34
|
3.1036
|
37
|
99
|
0.6016
|
|
2
|
36
|
2.9505
|
38
|
100
|
0.5776
|
|
3
|
37
|
2.8058
|
39
|
102
|
0.5546
|
|
4
|
39
|
2.6690
|
40
|
104
|
0.5327
|
|
5
|
41
|
2.5396
|
41
|
106
|
0.5117
|
|
6
|
43
|
2.4174
|
42
|
108
|
0.4918
|
|
7
|
45
|
2.3018
|
43
|
109
|
0.4726
|
|
8
|
46
|
2.1922
|
44
|
111
|
0.4543
|
|
9
|
48
|
2.0886
|
45
|
113
|
0.4369
|
|
10
|
50
|
1.9904
|
46
|
115
|
0.4201
|
|
11
|
52
|
1.8974
|
47
|
117
|
0.4041
|
|
12
|
54
|
1.8093
|
48
|
118
|
0.3889
|
|
13
|
55
|
1.7258
|
49
|
120
|
0.3742
|
|
14
|
57
|
1.6465
|
50
|
122
|
0.3602
|
|
15
|
59
|
1.5715
|
51
|
124
|
0.3467
|
|
16
|
61
|
1.5003
|
52
|
126
|
0.3340
|
|
17
|
63
|
1.4327
|
53
|
127
|
0.3217
|
|
18
|
64
|
1.3684
|
54
|
129
|
0.3099
|
|
19
|
66
|
1.3074
|
55
|
131
|
0.2986
|
|
20
|
68
|
1.2495
|
56
|
133
|
0.2878
|
|
21
|
70
|
1.1944
|
57
|
135
|
0.2774
|
|
22
|
72
|
1.1421
|
58
|
136
|
0.2675
|
|
23
|
73
|
1.0923
|
59
|
138
|
0.2580
|
|
24
|
75
|
1.0451
|
60
|
140
|
0.2488
|
|
25
|
77
|
1.0000
|
61
|
142
|
0.2400
|
|
26
|
79
|
0.9573
|
62
|
144
|
0.2316
|
|
27
|
81
|
0.9166
|
63
|
145
|
0.2235
|
|
28
|
82
|
0.8778
|
64
|
147
|
0.2157
|
|
29
|
84
|
0.8409
|
65
|
149
|
0.2083
|
|
30
|
86
|
0.8057
|
66
|
151
|
0.2011
|
|
31
|
88
|
0.7722
|
67
|
153
|
0.1941
|
|
32
|
90
|
0.7403
|
68
|
154
|
0.1876
|
|
33
|
91
|
0.7099
|
69
|
156
|
0.1813
|
|
34
|
93
|
0.6809
|
70
|
158
|
0.1752
|
|
35
|
95
|
0.6532
|
|
|
|
INTERCHANGEABLE
THERMISTOR DATA
Curve "H"
(5 °C
Increments)
Resistance
Ratio vs Temperature
|
Temperature
|
Resistance
Ratio
(R/R25)
|
Temperature
|
Resistance
Ratio
(R/R25)
|
|
°C
|
°F
|
°C
|
°F
|
|
-50
|
-58
|
67.260
|
55
|
131
|
0.2987
|
|
-45
|
-49
|
47.337
|
60
|
140
|
0.2488
|
|
-40
|
-40
|
33.727
|
65
|
149
|
0.2084
|
|
-35
|
-31
|
24.312
|
70
|
158
|
0.1753
|
|
-30
|
-22
|
17.721
|
75
|
167
|
0.1482
|
|
-25
|
-13
|
13.054
|
80
|
176
|
0.1257
|
|
-20
|
-4
|
9.714
|
85
|
185
|
0.1072
|
|
-15
|
5
|
7.299
|
90
|
194
|
0.09174
|
|
-10
|
14
|
5.535
|
95
|
203
|
0.07882
|
|
-5
|
23
|
4.234
|
100
|
212
|
0.06798
|
|
0
|
32
|
3.266
|
105
|
221
|
0.05884
|
|
5
|
41
|
2.540
|
110
|
230
|
0.05110
|
|
10
|
50
|
1.990
|
115
|
239
|
0.04454
|
|
15
|
59
|
1.571
|
120
|
248
|
0.03894
|
|
20
|
68
|
1.249
|
125
|
257
|
0.03416
|
|
25
|
77
|
1.000
|
130
|
266
|
0.03005
|
|
30
|
86
|
0.8055
|
135
|
275
|
0.02652
|
|
35
|
95
|
0.6531
|
140
|
284
|
0.02347
|
|
40
|
104
|
0.5325
|
145
|
293
|
0.02082
|
|
45
|
113
|
0.4368
|
150
|
302
|
0.01853
|
|
50
|
122
|
0.3602
|
|
|
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