TR250-145U Tyco Electronics, TR250-145U Datasheet - Page 13

• Manufacturer Part Number: TR250-145U
• Description: POLYSWITCH 0.145A HOLD UNENCAPS
• Manufacturer: Tyco Electronics
• Series: PolySwitch®r

Specifications of TR250-145U

• R Min/max: 3.500 ~ 6.500 Ohm
• Voltage - Max: 60V
• Time To Trip: 2s
• Current - Hold (ih) (max): 145mA
• Current - Trip (it): 290mA
• Current - Max: 3A
• Package / Case: Radial
• Holding Current: 0.145A
• Tripping Current: 0.29A
• Initial Resistance Max: 6.5ohm
• Initial Resistance Min: 3.5ohm
• Resistance R1: 12ohm
• Peak Reflow Compatible (260 C): No
• Fuse Terminals: Radial Leaded
• Thermistor Type: PTC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: TR145U

Raychem Circuit Protection
Figures T12–T17. Typical Time-to-trip Curves at 20°C for Telecommunications and Networking Devices
TC250/TGC250
A = TC250-180
B = TC250-145T
C = TCF250-120T
TR/TRF250
A = TRF250-180
B = TR250-145/145U
C = TR250-120/120U
D = TR250-110U/120UT/120T
E = TR250-080T/080U
1000
0.10
0.01
100
10
1
0.00 0.20
E
C
B
0.40
C
D
B
A
A
0.60 0.80
PolySwitch Telecommunications and Networking Resettable Devices
1.00 1.20
Figure
Figure
Fault current (Arms)
Fault current (Arms)
1.40 1.60
T12
T13
Telecommunications and Networking
1.80 2.00 2.20
2.40 2.60
2.80 3.00
A
B
C
313
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