SSR21NH-M051350

Overview

The KEMET SSR21NH-M051350 is a through-hole common mode choke designed for AC line filtering applications. It features an inductance of 135 mH at a test frequency of 10 kHz and supports a maximum DC current of 500 mA. The component has a maximum DC resistance of 1.9 Ohms and operates within a temperature range of -25°C to +120°C. Rated for 250 VAC, it utilizes a PCB mount installation style with dimensions of 23 mm width, 14.5 mm height, and 3.5 mm length.

Feature Summary

• Provides high impedance common mode noise suppression for single-phase AC lines
• Utilizes a compact, low-profile through-hole bobbin construction
• Engineered for reliable operation across a wide industrial temperature range

Applications

• AC power input filtering for electronic equipment
• EMI suppression in single-phase power supplies
• Noise reduction in consumer and industrial AC circuits

Procurement Notes

Verify the specific suffix NH-M against the official KEMET datasheet to confirm the exact electrical characteristics and physical dimensions required for your design. Ensure the selected component meets the thermal management requirements for your enclosure, as the operating temperature extends to +120°C. Cross-reference the package type and pin configuration with your PCB footprint to guarantee mechanical compatibility before finalizing procurement.

Selection Notes

Select this component when a high inductance value of 135 mH is required for effective common mode noise attenuation in low-current AC applications. The 500 mA current rating suits devices with modest power consumption. Consider the through-hole mounting style if board space allows and higher mechanical stability is preferred over surface-mount alternatives. Verify that the 1.9 Ohm DCR does not introduce excessive voltage drop in your specific circuit design.

Part Context

This part belongs to the KEMET SSR21NH-M series of AC line filters. These components are characterized by their compact size and lightweight design, making them suitable for space-constrained applications. The series offers various inductance values to address different EMI suppression needs while maintaining compliance with relevant safety standards for AC line filtering.

Replacement Considerations

Check the SSR21H series for alternative inductance values if the 135 mH specification is not critical. Verify that any substitute maintains the same through-hole package dimensions and current rating to ensure mechanical and electrical compatibility without redesigning the PCB layout.