Littelfuse 0.12A Hold current, Radial Resettable Wire Ended Fuses, 60V dc

  • RS Stock No. 869-7419
  • Mfr. Part No. TRF250-120U
  • Manufacturer Littelfuse
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
Product Details

PolySwitch™ PTC Devices TRF Series

TE PolySwitch TRF Series of telecommunications and networking devices provide protection against damage caused by power cross and power induction surges as defined in ITU, Telcordia GR1089 and UL60950. Typically used in modems, fax machines, alarm systems, xDSL modems and splitters, T1/E1 equipment, analog and digital line cards, VoIP (Voice over Internet Protocol) equipment, LAN, WAN equipment and access network hardware applications.

Resettable overcurrent protection
Surface-mount, radial-leaded and chip form factors
Fast time-to-trip
Low parasitic capacitance/flat impedance with frequency
RoHS compliant

PCB Wire Ended

Resettable fuses with radial leads that offer the following:

All are UL, CSA, TUV approved
Protection of electrical and electronic circuits against excessive currents
Rapid switch from low resistance state to very high resistance with electrical overload or short circuit
Quick and automatic reset and return to low resistance state when fault condition corrected and power removed


Automatically resets itself thousands of times
Maintenance free
Small size and no fuseholder required

Main applications:

Security systems
Power supplies and transformers
Power switching devices
Automotive and medical equipment
Instrumentation and control
Computers and peripherals
Audio visual and telecommunications

Attribute Value
Lead Orientation Radial
Time to Trip 1s
Hold Current 0.12 A
Voltage Rating 60 V dc
Maximum Current 3 A
Minimum Resistance
Maximum Resistance 10Ω
Power Dissipation 0.8W
Body Height 10mm
Body Length 6mm
Body Width 3.8mm
Wire Pitch 5mm
Wire Length 4.7mm
Maximum Operating Temperature +85°C
Minimum Operating Temperature -40°C
On back order for despatch 15/01/2020, delivery within 5 working days from despatch date.
Price (ex. GST) Each (In a Bag of 10)
$ 0.601
(exc. GST)
$ 0.661
(inc. GST)
Per unit
Per Bag*
10 - 90
100 - 490
500 - 990
1000 - 9990
10000 +
*price indicative
Packaging Options:
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