TRF250-120 - Littelfuse Inc.

Manufacturer Part Number

TRF250-120

Manufacturer

Littelfuse

Introduction

Resettable Fuse for Circuit Protection in Electronic Devices

Product Features and Performance

Circuit Protection PTC Resettable Fuse

Suitable for 60V (250V Int) applications

Holds current up to 120 mA

Trips at 240 mA

Maximum current capacity of 3 A

Trip time of 2.5 seconds

Initial resistance minimum of 4 Ohms

Post-trip resistance maximum of 16 Ohms

Through-hole mounting type

Radial disc package

Operates in temperatures ranging from -40°C to 85°C

Product Advantages

PolySwitch® technology providing enhanced protection

Robust design for high reliability

Quick to react to fault conditions

Resettable functionality reduces servicing needs

Compatible with high-volume electronics assembly

Key Technical Parameters

Voltage - Max: 60V (250V Int)

Current - Hold (Ih) (Max): 120 mA

Current - Trip (It): 240 mA

Current - Max: 3 A

Time to Trip: 2.5 s

Resistance - Initial (Ri) (Min): 4 Ohms

Resistance - Post Trip (R1) (Max): 16 Ohms

Operating Temperature Range: -40°C to 85°C

Lead Spacing: 0.197" (5.00mm)

Quality and Safety Features

Compliant with CSA, TUV, UL safety standards

Compatibility

Compatible with through-hole PCB mounting

Designed for a wide range of electronic applications

Application Areas

Consumer Electronics

Telecommunications

Computing

Industrial Electronics

Automotive Systems

Product Lifecycle

Status: Active

Continued support and availability

Several Key Reasons to Choose This Product

Robust circuit protection for sensitive electronics

Fast reaction to overcurrent conditions saving potential damage

Resettable feature offers ongoing protection without the need to replace

Meets major safety standards ensuring broad acceptance

Versatile use across multiple industries and applications

High reliability and long operational life reducing maintenance costs