SS21V-R040770

Overview

The KEMET SS21V-R040770 is a through-hole common mode choke belonging to the SS21V series. It features an inductance of 77 mH and a rated AC voltage of 250 VAC. The component supports a maximum current of 400 mA with a DC resistance of 5.4 Ohms. Designed for vertical mounting, it utilizes a bobbin construction suitable for AC line filtering applications.

Feature Summary

• Vertical through-hole mounting style
• Common mode noise suppression capability
• Bobbin-based coil construction

Applications

• AC line filters
• Power supply input stages
• EMI suppression circuits

Procurement Notes

Verify the specific part number SS21V-R040770 against official KEMET documentation to confirm the 77 mH inductance and 400 mA current rating. Ensure the vertical package style matches the PCB layout requirements. Cross-reference datasheets for thermal performance limits under continuous operation conditions.

Selection Notes

Select this component when vertical orientation is required for space-constrained designs. The 77 mH value provides significant impedance for common mode interference at power line frequencies. Verify that the 400 mA current handling meets the circuit's peak load demands without saturation.

Part Context

This component is part of the SS21V series of common mode chokes manufactured by KEMET. The series is characterized by its use in AC line filtering applications where vertical mounting is preferred. It complements other passive components in EMI mitigation strategies for electronic equipment.

Replacement Considerations

Check for direct substitutes within the SS21V series or equivalent common mode chokes from other manufacturers. Ensure replacement parts match the 77 mH inductance, 400 mA current rating, and 5.4 Ohm DC resistance specifications.