RKEF090 - Littelfuse Inc.

Manufacturer Part Number

RKEF090

Manufacturer

Littelfuse

Introduction

The Littelfuse RKEF090 is a compact, resettable polymeric positive temperature coefficient (PPTC) overcurrent protection device designed to provide reliable overcurrent and overtemperature protection for sensitive electronic circuits. It offers a fast response time and can withstand high fault currents, making it an ideal solution for a wide range of applications.

Product Features and Performance

Polymeric PTC design for reliable overcurrent and overtemperature protection

Fast response time of 2 seconds

High fault current withstand capability of up to 40A

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

Initial resistance of 190 mOhms and post-trip resistance of 520 mOhms

Compact radial disc package with a size of 0.310" L x 0.140" W (7.87mm x 3.56mm) and a maximum seated height of 0.550" (13.97mm)

Product Advantages

Robust and reliable protection for sensitive electronic circuits

Resettable design for easy circuit restoration after fault conditions

Compact size for space-constrained applications

Wide operating temperature range for use in diverse environments

Key Reasons to Choose This Product

Proven Littelfuse quality and reliability

Versatile protection for a wide range of applications

Fast response time and high fault current withstand capability

Compact and space-saving design

Quality and Safety Features

Approved by CSA, TUV, and UL for safety and quality assurance

Designed and manufactured to the highest standards

Compatibility

The Littelfuse RKEF090 is compatible with a wide range of electronic devices and systems that require overcurrent and overtemperature protection.

Application Areas

Consumer electronics

Industrial equipment

Telecommunications equipment

Automotive electronics

Power supplies

General electronics

Product Lifecycle

The Littelfuse RKEF090 is an active product in the Littelfuse product portfolio. There are no plans for discontinuation, and it remains a viable solution for overcurrent and overtemperature protection needs. If you have any questions or require additional information, please contact our website's sales team.