FN7661-100-M8

Overview

The Schaffner FN7661-100-M8 is a single-phase LC (Pi) EMI feedthrough filter designed for bulkhead mounting. It features M8 threaded terminals and supports a maximum current of 100 A with a rated voltage of 130 V. The component utilizes an axial package measuring 32.00 mm in diameter and 136.00 mm in length. Internal circuit parameters include an inductance of 186 nH and a capacitance of 1 µF, resulting in a low DC resistance of 0.00028 Ω. It operates within a temperature range of -40°C to +100°C.

Feature Summary

• Provides third-order low-pass filtering using LC Pi topology to suppress electromagnetic interference.
• Features robust bolt installation via M8 threaded terminals for secure bulkhead mounting.
• Engineered for high-current applications with a 100 A rating and minimal DC resistance.

Applications

• Data lines in mobile equipment
• Computer server power systems
• Medical equipment signal conditioning

Procurement Notes

Verify the specific suffix M8 to confirm terminal thread size and mounting configuration. Ensure the 130 VAC rating aligns with system voltage requirements. Confirm RoHS3 compliance status if environmental regulations apply. Check lead times as manufacturing schedules may vary. Validate physical dimensions against panel cutout specifications before integration.

Selection Notes

Select this component when high current handling up to 100 A is required alongside effective EMI suppression. The LC Pi topology offers superior attenuation compared to simple capacitor filters. Consider the axial form factor for space-constrained bulkhead installations. Verify that the operating temperature range meets environmental conditions. Ensure the M8 terminal style matches existing connector or cable assembly interfaces.

Part Context

This part belongs to the FN766X series of EMI feedthrough filters manufactured by TE Connectivity Schaffner. The series is characterized by high-performance filtering capabilities in compact axial packages. These components are widely used in industrial and medical sectors where reliable noise suppression is critical for sensitive electronics.

Replacement Considerations

No direct public substitute part numbers are confirmed for this specific model. Cross-referencing requires matching the 100 A current rating, 186 nH inductance, 1 µF capacitance, and M8 terminal interface. Alternative selection must maintain identical electrical performance and mechanical mounting constraints.