TRF250-145T-B-0.5

$0.93

Description：PTC RESET FUSE 60V 145MA RADIAL
Series：PolySwitch®, TRF250
Mfr：Littelfuse Inc.
Package：Bag

SKU:d6dfca9b685b Category: PTC Resettable Fuses Brand: Littelfuse Inc.

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Product introduction

TRF250-145T-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 145MA RADIAL. Review the specifications below when checking this part for your BOM.

Ptc Resettable Fuses specifications for TRF250-145T-B-0.5

Description：PTC RESET FUSE 60V 145MA RADIAL
Series：PolySwitch®, TRF250
Mfr：Littelfuse Inc.
Package：Bag
Type：Polymeric
Voltage - Max：60V (250V Int)
Current - Hold (Ih) (Max)：145 mA
Current - Trip (It)：290 mA
Current - Max：3:00 AM
Time to Trip：2.5 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 TRF250-145T-B-0.5

TRF250-145T-B-0.5

Ptc Resettable Fuses Overview

The Littelfuse TRF250-145T-B-0.5 is a PolySwitch resettable PPTC fuse designed for PCB mounting with radial termination. It features a maximum voltage rating of 60 VDC and a hold current of 145 mA. The trip current is specified at 290 mA, with a maximum rated current of 3 A. Initial resistance is typically 14 Ohms. The device operates within a temperature range of -40°C to +85°C and has a lead spacing of 5 mm.

Ptc Resettable Fuses Feature Summary

Provides automatic circuit protection against overcurrent conditions through polymer positive temperature coefficient technology.
Offers repeatable reset functionality after fault clearance without requiring component replacement.
Designed for direct printed circuit board mounting using radial leads.

Ptc Resettable Fuses Applications

Overcurrent protection for portable electronic devices
Circuit safeguarding in battery-powered equipment
Protection for communication ports and data lines

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix codes against official Littelfuse documentation to ensure correct package and tolerance specifications. Confirm that the 60V DC rating aligns with the target application's voltage requirements. Check RoHS compliance status via the manufacturer datasheet before integration into regulated assemblies.

Ptc Resettable Fuses Selection Notes

Select this component when a low-profile radial PTC fuse is required for circuits operating up to 60V DC. Ensure the hold current of 145 mA matches the normal operating load to prevent nuisance tripping. Verify that the physical dimensions and lead spacing fit the available PCB footprint constraints.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse TRF250 series of PolySwitch resettable fuses. The series provides compact overcurrent protection solutions for space-constrained applications. The TRF250 family utilizes polymer technology to deliver reliable circuit protection across various consumer and industrial electronics.