FN402-4-02

Overview

The Schaffner FN402-4-02 is a single-phase power line filter designed for printed circuit board (PCB) mounting. It features a rated voltage of 250 VAC and a continuous current rating of 4 A, operating within a frequency range of 0 Hz to 400 Hz. The component utilizes through-hole solder pin termination for secure installation. Key electrical specifications include a capacitance of 100 nF and an inductance of 1 mH. The device exhibits a leakage current of 373 uA and complies with UL, CSA, and IEC/EN safety standards.

Feature Summary

• Provides effective electromagnetic interference (EMI) attenuation for single-phase power lines
• Engineered for compact PCB integration using through-hole solder pin technology
• Designed for low-cost applications requiring reliable noise suppression

Applications

• Single-phase EMC/EMI line filtering in commercial power systems
• Power supply input stages for electronic equipment
• Noise suppression in devices operating at 250 VAC

Procurement Notes

Verify the manufacturer part number TE Connectivity / Schaffner FN402-4-02 against official datasheets to confirm technical compliance. Ensure the ordering suffix matches the required configuration, as variations may exist. Cross-reference safety certifications such as UL and CSA with the specific batch documentation. Confirm that the 4 A current rating and 250 VAC voltage limits align with the target application's electrical requirements before procurement.

Selection Notes

Select this component for applications requiring single-stage EMI filtering on single-phase AC lines. The 4 A rating suits moderate power loads, while the 100 nF capacitance and 1 mH inductance define its attenuation characteristics. Consider the through-hole package for robust mechanical connection. Verify that the 373 uA leakage current meets system safety limits. This filter is suitable where cost-effectiveness and standard PCB mounting are prioritized over high-frequency RF performance.

Part Context

The FN402 series represents a line of low-cost PCB-mount power line filters from Schaffner. These components are engineered for general-purpose EMI suppression in commercial electronics. The series offers various current ratings to accommodate different load requirements while maintaining a consistent form factor and mounting style. The FN402-4-02 specifically addresses the needs of 4 A single-phase applications.

Replacement Considerations

Publicly confirmed substitute part numbers for the FN402-4-02 are not available in the provided source material.