TRF250-120T-RC-B-0.5

$0.85

Description：PTC RESET FUSE 60V 120MA RADIAL
Series：PolySwitch®, TRF250
Mfr：Littelfuse Inc.
Package：Bag

SKU:70dd0a7ca494 Category: PTC Resettable Fuses Brand: Littelfuse Inc.

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Product introduction

TRF250-120T-RC-B-0.5 is listed in the Ptc Resettable Fuses range at ChipApex. The manufacturer field lists Littelfuse Inc.. Its product description is PTC RESET FUSE 60V 120MA RADIAL. Review the specifications below when checking this part for your BOM.

Ptc Resettable Fuses specifications for TRF250-120T-RC-B-0.5

Description：PTC RESET FUSE 60V 120MA RADIAL
Series：PolySwitch®, TRF250
Mfr：Littelfuse Inc.
Package：Bag
Type：Polymeric
Voltage - Max：60V (250V Int)
Current - Hold (Ih) (Max)：120 mA
Current - Trip (It)：260 mA
Current - Max：3:00 AM
Time to Trip：3 s
Resistance - Initial (Ri) (Min)：5.4 Ohms
Resistance - Post Trip (R1) (Max)：14 Ohms
Resistance - 25°C (Typ)：-
Operating Temperature：-40°C ~ 85°C
Grade：-
Qualification：-
Ratings：-
Mounting Type：Through Hole
Package / Case：Radial, Disc
Size / Dimension：0.256" L x 0.181" W (6.50mm x 4.60mm)
Height - Seated (Max)：0.433" (11.00mm)
Thickness (Max)：-
Lead Spacing：0.197" (5.00mm)

Ptc Resettable Fuses datasheet and documents for TRF250-120T-RC-B-0.5

TRF250-120T-RC-B-0.5

Ptc Resettable Fuses Overview

The Littelfuse TRF250-120T-RC-B-0.5 is a PolySwitch resettable fuse with a hold current of 120 mA and trip current of 240 mA. It supports a maximum voltage of 60 VDC and a maximum rated current of 3 A. The component features a resistance of 16 Ohms, operates within a temperature range of -40°C to +85°C, and has a power dissipation rating of 1 W. Physical dimensions include a height of 4.6 mm, length of 11 mm, width of 6.5 mm, and a lead spacing of 5 mm.

Ptc Resettable Fuses Feature Summary

Provides rapid response to overcurrent conditions for circuit protection
Offers low parasitic capacitance and flat frequency impedance characteristics
Features UL 1434 certification along with CSA TIL No. CA-3A and EN 60730-1 approvals

Ptc Resettable Fuses Applications

Telecommunications equipment
Networking devices
Consumer electronics

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix RC against official Littelfuse documentation to confirm the exact resistance classification or tolerance requirements. Ensure the selected variant matches the precise electrical parameters needed for the target application design. Cross-reference the datasheet to validate all physical dimensions and mounting specifications before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component based on its 120 mA hold current and 60 VDC maximum voltage rating. Consider the 16 Ohm resistance value and 1 W power dissipation capability for thermal management. Verify that the radial package and 5 mm lead spacing fit the PCB layout constraints. Confirm compliance with required safety standards such as UL 1434 and EN 60730-1.

Ptc Resettable Fuses Part Context

This part belongs to the TRF250 series of PolySwitch resettable fuses manufactured by Littelfuse. These components are designed for overcurrent protection in various electronic circuits. The series offers reliable performance across a wide temperature range and includes multiple variants with different hold currents and resistance classifications to suit diverse application needs.