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:

  • Temperature Sensing

  • Temperature Measurement and Control

Features 

  • Curve Matched

  • High Quality

  • Low Cost

  • Small Size

  • Epoxy Encapsulated

Specifications

  • Dissipation Constant:   2 mW/°C

  • Time Constant:              10 Seconds

wpe1.gif (3800 bytes)

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.

wpe2.gif (5981 bytes)

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

     
 

 

 




Copyright 2008 WECC | All Rights Reserved   Home | Company Overview | Product Info | Contact Us

Factory Direct
Technical Sales - sales@wecc.com Design/Engineering - mrazeggi@wecc.com General Inquiries - info@wecc.com
Western Electronic Components © 2008
521-A Spectrum Circle Oxnard, CA 93030  (805) 988-9888