FN7661-10-M3

Overview

The FN7661-10-M3 is a single-channel LC (Pi) EMI feedthrough filter manufactured by TE Connectivity Schaffner. It features a low-pass topology with third-order filtering characteristics, designed for high-performance noise suppression in sensitive data lines. The component supports a maximum DC current of 10 A and operates within a voltage rating of 130 V. Key electrical parameters include an inductance of 70 nH and a capacitance of 0.1 µF. The unit utilizes axial threaded terminals for secure mounting and measures 20.00 mm in diameter by 78.00 mm in length.

Feature Summary

• LC (Pi) low-pass topology providing third-order attenuation for effective EMI/RFI suppression
• Axial threaded terminal design enabling robust mechanical integration via bolt installation
• Optimized for high-frequency noise reduction in mobile device data transmission lines

Applications

• Mobile device data lines
• Medical device signal processing circuits
• Industrial control system data interfaces

Procurement Notes

Verify the specific suffix M3 corresponds to the required thread size and termination style before ordering. Confirm that the 130V rating and 10A current capacity align with the target circuit requirements. Ensure compatibility with the specified axial mounting configuration and verify RoHS3 compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component when high-capacitance filtering is required for low-voltage data lines without introducing excessive series resistance. The 0.1 µF capacitance value distinguishes it from lower-capacitance variants like the FN7660 series. Consider the physical dimensions and bolt-mount requirement during PCB or chassis layout planning to ensure adequate clearance for the cylindrical housing.

Part Context

This part belongs to the FN 766X series of EMI feedthrough filters, which are engineered for demanding EMC applications. The series offers various combinations of inductance and capacitance values to suit different frequency response needs. The FN7661 variant specifically targets applications requiring higher capacitance than the FN7660 model while maintaining a compact axial form factor suitable for panel penetration.

Replacement Considerations

The FN7660-10-M3 serves as a comparable alternative within the same series but features different electrical values (58 nH / 10000 pF). Verify that the reduced capacitance of the substitute part meets the specific attenuation requirements of the application before substitution.