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GE
Sensing
~
Power Thermistor
Specification
~
5W
P: Th P: Th
C
+- L
EH
P: Th
Power thermistor application circuits
+-
+-
C
C
L
Parts
7
D
7.0±1.5
T(max.)
5.2
L
18.5
d
0.6
F
5.0
H1(±2.5)
15.5
W1(min.)
1.5
For the Reduction of Inrush Current
A power thermistor is a type of NTC thermistor used for
the reduction of large inrush currents. These large inrush
currents are typically caused by charging of filter
9
11
13
15
18
9.0±1.5
11.0±1.5
13.5±1.5
15.0±1.5
18.0±1.5
6.0
6.5
8.0
9.0
9.0
18.5
18.5
18.5
18.5
18.5
0.6
0.8
0.8
0.8
1.0
5.0
7.5
7.5
7.5
10.0
17.0
19.5
21.5
23.5
27.0
1.5
2.0
2.0
2.0
3.0
capacitors in switching power supplies.
Parts Type
Normal
no load
Normal Dissipation Max.
β constant factor Permissible
Time
Constant
Lead Wire Style
Inside Kink: E
Diam
(mm)
TP7D7
resistance
( ? )
7
(K) (mW/°C) Current at
77°F (25°C)
3000 9.8 2.4
(sec)
70
TP8D7
8
3000 10.0 2.3
70
Outside Kink: F
7 Φ
TP10D7
TP16D7
TP22D7
TP5D9
TP8D9
10
16
22
5
8
3000 10.3 2.0
3000 10.5 1.6
3100 9.5 1.4
3000 11.0 3.0
3000 14.2 2.7
80
100
120
110
120
Straight: D
9 Φ
11 Φ
TP10D9
TP16D9
TP4R7D11
TP5D11
TP8D11
TP10D11
10
16
4.7
5
8
10
3000 12.9 2.3
3100 10.2 1.7
3000 15.0 3.7
3000 15.0 3.3
3000 17.6 2.6
3100 17.4 2.4
130
160
90
130
160
170
Y-Form
No: M
Yes: J
13 Φ
15 Φ
TP4R7D13
TP5D13
TP8D13
TP10D13
TP3D15
TP5D15
TP8D15
4.7
5
8
10
3
5
8
3000 15.0 4.3
3000 15.0 3.4
3100 17.0 2.7
3100 13.8 2.5
3000 16.5 4.0
3100 17.7 3.7
3100 21.7 3.1
110
125
160
180
165
170
180
Units:
in (mm)
D
W1
d
F
18 Φ
TP10D15
TP4D18
TP5D18
TP8D18
TP10D18
10
4
5
8
10
3100 19.9 2.9
3000 22.2 4.1
3000 24.0 3.8
3100 26.8 3.1
3100 27.8 2.8
200
170
180
220
260
* The resistance tolerance is ± 10% for standard devices.
* The b constant is determined by the equation : β = 1779.7 ln (R25/R85) ...R25 and R85 represent
H1
L
the thermistor resistance at 77°F and 185°F (25oC and 85oC) respectively.
* For non-standard devices consult Thermometrics global business.
Code Designation
T
TP
8
D 13 L
K
B
E
S
M
N
R
1
2 3 4 5 6 7 8 9 10 11
Resin coated Pb/Sn-plated
copper wire
Power thermistor standard dimensions
1
2
3
4/5
6
7
8
9
Shape: Power thermistor
Resistance at 77°F (25°C): 8 = 8 S , 4R7 = 4.7 S
Diameter size: D7, D9, ...D18
Resistance and B constant tolerance: K: ±10%, L: ±15%
Lead wire center-to-center: (F): A: 0.19 in (5 mm), B: 0.29 in (7.5 mm),
C: 0.39 in (10 mm)
Lead wire style: D: Straight, E: Inside kink, F: Outside kink
Lead wire length: G: 0.19 in (5 mm), H: 0.27 in (7 mm), I: 0.35 in (9 mm),
...S: Other dimensions
Y-Form: J: Yes, M: No
g
10 MK part number marking: N: No, O: Yes
11 Packing form: Taping P: 15 pitch, Q: 30 pitch, Others: R: Bulk, S: Paper pad,
T: Element
?2006 GE. All rights reserved.
920-325A
GE ? is a registered trademark of General Electric Co. Other company or product
names mentioned in this document may be trademarks or registered trademarks
of their respective companies, which are not affiliated with GE.
All specifications are subject to change for product improvement without notice. www.gesensing.com
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