SMD125F-2 - Littelfuse Inc.

Manufacturer Part Number

SMD125F-2

Manufacturer

littelfuse

Introduction

The littelfuse SMD125F-2 is a PolySwitch® resettable fuse designed for circuit protection in a variety of electronic devices. It offers reliable overcurrent and overtemperature protection to prevent damage from short circuits, overloads, and other fault conditions.

Product Features and Performance

Polymeric positive temperature coefficient (PPTC) design

Rated for a maximum voltage of 15V

Hold current (Ih) of 1.25A and trip current (It) of 2.5A

Maximum current rating of 40A

Time to trip of 2 seconds

Initial resistance (Ri) of at least 70 milliohms

Operating temperature range of -40°C to 85°C

Product Advantages

Provides automatic reset functionality after a fault condition is cleared

Compact surface mount (SMD) package for efficient board space utilization

Reliable and durable construction for long-lasting performance

RoHS-compliant and halogen-free for environmentally-friendly applications

Key Reasons to Choose This Product

Robust overcurrent and overtemperature protection for critical circuits

Convenient resettable design eliminates the need for manual intervention

Compact size and surface mount package enable flexible PCB integration

Proven reliability and performance from a trusted circuit protection brand

Quality and Safety Features

Meets industry safety and quality standards

Constructed with high-quality materials for long-term reliability

Compatibility

The SMD125F-2 is compatible with a wide range of electronic devices and applications that require circuit protection, including consumer electronics, telecommunications equipment, industrial controls, and more.

Application Areas

Consumer electronics (e.g., smartphones, tablets, laptops)

Telecommunications equipment (e.g., routers, modems, switches)

Industrial automation and control systems

Medical devices

Automotive electronics

Product Lifecycle

The SMD125F-2 is an active and current product in the littelfuse PolySwitch® series. There are no known plans for discontinuation at this time. If you require information on alternative or equivalent models, please contact our website's sales team.