FN402B-0.5-02

Overview

The Schaffner FN402B-0.5-02 is a single-phase EMC/EMI line filter designed for PCB mounting in medical and general-purpose applications. It operates at a rated voltage of 250 VAC and handles a current rating of 0.5 A (500 mA). The component features a leakage current of 2 µA, ensuring safety compliance for sensitive equipment. It functions within a frequency range of 0 Hz to 400 Hz and includes an inductance of 10 mH. The filter utilizes solder pin termination for secure board integration.

Feature Summary

• Designed specifically for medical purpose applications with low leakage current characteristics
• Provides single-stage electromagnetic interference suppression for power lines
• Utilizes a low-cost printed circuit board mount construction

Applications

• Medical electronic equipment requiring strict leakage current limits
• General-purpose single-phase power supply filtering
• PCB-mounted EMI suppression in compact devices

Procurement Notes

Verify the specific datasheet version for the FN402B-0.5-02 to confirm compliance with current medical safety standards such as IEC 60601-1. Ensure that the 2 µA leakage current specification meets the requirements of your target application's safety regulations. Confirm that the 250 VAC rating is sufficient for your local mains voltage environment.

Selection Notes

Select this component when a low-cost, PCB-mount solution is required for single-phase applications with a maximum current demand of 0.5 A. It is suitable for designs where minimal leakage current is critical, particularly in medical contexts. Compare against the standard FN402 series if medical certification is not required, or consider higher current variants like the FN402B-1-02 if load requirements exceed 500 mA.

Part Context

This part belongs to the Schaffner FN402B series, which is distinguished by its suitability for medical applications due to ultra-low leakage current specifications. The series offers a cost-effective alternative to higher-end filters while maintaining essential EMC performance. It is manufactured by TE Connectivity / Schaffner and is part of a broader family of single-phase power line filters ranging from 0.5 A to 6.5 A ratings.

Replacement Considerations

The FN402-0.5-02 is a non-medical equivalent within the same manufacturer's lineup but lacks the specific medical leakage current guarantees. Verify compatibility with the FN402B-0.5/02 designation found in some distributor catalogs.