SSR21NVS-05570

Overview

The KEMET SSR21NVS-05570 is a through-hole common mode choke designed for AC line filtering applications. It features an inductance of 57 mH at a test frequency of 10 kHz and supports a maximum DC current of 500 mA. The component has a low DC resistance of 1.06 Ohms and withstands 250 VAC operating voltage with a dielectric strength of 2.4 kV. It operates within a temperature range of -25°C to +120°C and utilizes a vertical, 4-pin PCB mount package.

Feature Summary

• Provides effective common mode noise suppression for AC power lines
• Designed for high reliability with robust dielectric insulation
• Supports surface or vertical PCB mounting configurations

Applications

• AC power input filtering for electronic equipment
• EMI suppression in consumer electronics power supplies
• Noise reduction in industrial control systems

Procurement Notes

Verify the specific suffix (NVS vs NHS) as it may indicate packaging or minor physical differences not affecting electrical function. Confirm RoHS compliance status via the official datasheet before integration. Ensure the selected variant matches the required lead frame and pin configuration for the target PCB layout.

Selection Notes

Select this component when a 57 mH inductance is required for common mode noise attenuation at 500 mA. The 1.06 Ohm DCR ensures minimal voltage drop across the filter. Verify that the 2.4 kV isolation rating meets the safety requirements of the application environment.

Part Context

This part belongs to the KEMET SSR21NVS series of common mode chokes. These components are engineered for AC line filtering where space constraints and thermal performance are critical. The series offers standardized inductance values optimized for EMI/RFI suppression in mains-powered devices.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-referencing requires matching inductance, current rating, and physical dimensions.