FN402B-4-02

Overview

The Schaffner FN402B-4-02 is a single-phase EMC/EMI power line filter designed for PCB mounting. It features a rated current of 4 A and a voltage rating of 250 VAC, operating within a frequency range of 0 Hz to 400 Hz. The component utilizes solder pin termination for through-hole installation. It is certified for medical applications, ensuring compliance with relevant safety standards.

Feature Summary

• Designed for medical equipment applications
• Low-cost PCB mount construction
• Single-stage EMI filtering capability

Applications

• Medical electronic devices
• PCB-mounted power supplies
• Electromagnetic interference suppression in low-power systems

Procurement Notes

Verify the specific part number against official TE Connectivity or Schaffner documentation to confirm medical certification status and exact physical dimensions. Ensure compatibility with your PCB layout and thermal requirements before procurement.

Selection Notes

Select this component when a compact, cost-effective solution is required for single-phase power lines in medical environments. Consider the 4 A current rating and 250 VAC voltage limit to ensure adequate performance margins for your specific application design.

Part Context

This component belongs to the FN402 series of power line filters manufactured by TE Connectivity under the Schaffner brand. The series offers various current ratings for different power requirements while maintaining a consistent form factor for PCB integration.

Replacement Considerations

Check for FN402B-4-02 equivalents from authorized distributors. Verify that any substitute maintains the same current rating, voltage rating, and medical certification if required.