Type TH

Specifications

Glass encapsulated radial lead thermistor

• The tolerance of resistance is ±5% for standard device.

• The tolerance of B constant is ±2% for standard device.

The constant is determined by the equation:

B = 3853.9 In (R25/R50)

R25 and R50 represent the thermistor resistance

at 77°F and 122°F (25°C and 50°C) respectively.

• Others: For non-standard devices, consult GE.

Ø 0.02in (0.5 mm) maximum

Ø 0.08 in (2 mm)

maximum

NTC Type TH dimensions

0.17 in (4.2 mm)

maximum

1.02 in (26 mm)

minimum

1.02 in (26 mm)

minimum

Part

Number

Resistance

(25 W )

β Constant

(25/50)

Recommended

Maximum

Operating Current

at 77°F (25ºC)

Maximum

Permissible

Current at 77°F

(25ºC)

TH220J33G

2.0 K

3375 K

0.22 mA

30.0 mA

TH225J13G

2.545 K

3745 K

0.22 mA

30.0 mA

TH238J34G

3.896 K

3434 K

0.20 mA

26.5 mA

TH253J34G

5.369 K

3434 K

0.16 mA

24.0 mA

TH310J34G

10.74 K

3434 K

0.13 mA

20.0 mA

TH310J36G

10.0 K

3684 K

0.14 mA

20.0 mA

TH310J39G

10.0 K

3933 K

0.14 mA

20.0 mA

TH315J39G

15.0 K

3933 K

0.12 mA

17.0 mA

TH320J39G

20.0 K

3952 K

0.10 mA

15.0 mA

TH349J39G

49.12 K

3952 K

0.06 mA

10.0 mA

TH350J39G

50.0 K

3952 K

0.06 mA

10.0 mA

TH398J40G

98.63 K

4014 K

0.045 mA

5.0 mA

TH410J40G

100.0 K

4014 K

0.045 mA

5.0 mA

TH420J34G

200.0 K

3450 K

0.015 mA

3.5 mA

TH423J41G

231.4 K

4176 K

0.015 mA

3.5 mA

TH510J44G

1,000 K

4491 K

0.007 mA

1.5 mA

TH513J44G

1,388 K

4491 K

0.005 mA

1.0 mA

Dissipation Factor

(in still air)

Time Constant

(in still air)

Operating

Temperature Range

Rated Power

at 77°F (25ºC)

2.0 (mW/ºC)

25 (seconds)

-40°F to 482°F

(-40°C to 250ºC)

25 mW