TRF250-145-2

$0.74

Description：PTC RESET FUSE 60V 145MA RADIAL
Series：PolySwitch®, TRF250
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:f039fe8402fd Category: PTC Resettable Fuses Brand: Littelfuse Inc.

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Product introduction

TRF250-145-2 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 TRF250-145-2

Description：PTC RESET FUSE 60V 145MA RADIAL
Series：PolySwitch®, TRF250
Mfr：Littelfuse Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
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：5 s
Resistance - Initial (Ri) (Min)：3 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：0.200" (5.08mm)

Ptc Resettable Fuses datasheet and documents for TRF250-145-2

TRF250-145-2

Ptc Resettable Fuses Overview

The Littelfuse TRF250-145-2 is a PolySwitch resettable PPTC fuse designed for overcurrent protection. It features a hold current of 145 mA and a trip current of 290 mA, with a maximum voltage rating of 60 VDC. The device has a maximum rated current of 3 A and an initial resistance of 7.5 ohms. It operates within a temperature range of -40°C to +85°C and utilizes a radial leaded package with a 5 mm lead spacing.

Ptc Resettable Fuses Feature Summary

Provides reliable overcurrent protection by raising resistance as it heats to limit current flow during fault conditions.
Offers automatic circuit recovery after the fault condition is removed and the device cools down.
Designed for PCB mounting with radial leads for through-hole integration.

Ptc Resettable Fuses Applications

Protection for automotive actuators and small motors
Overcurrent protection for telecommunication equipment circuits
Power supply input protection

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix against official Littelfuse documentation to ensure correct packaging and tolerance specifications. Confirm that the radial lead configuration matches the target PCB footprint requirements. Cross-reference the datasheet parameters to validate compatibility with the system's voltage and current constraints before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component when a 145 mA hold current and 60 VDC rating are required for radial leaded applications. Ensure the 290 mA trip current aligns with the circuit's normal operating margin. Consider the 7.5 ohms initial resistance impact on low-voltage sensitive lines. Verify thermal management needs given the -40°C to +85°C operating range.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse PolySwitch TRF250 series of resettable fuses. The series provides solid-state overcurrent protection solutions suitable for various industrial and consumer electronics applications. The TRF250 series is characterized by its radial leaded form factor, making it suitable for through-hole PCB mounting in space-constrained designs.