SC-20-300

Overview

The KEMET SC-20-300 is a through-hole common mode filter choke designed for AC line filtering. It features an inductance of 3 mH and supports a maximum DC current of 20 A with a maximum DC resistance of 0.013 Ohms. Rated for 250 VAC, the component operates within a temperature range of -25°C to +120°C. Its physical dimensions are 63.0 mm in length, 35.0 mm in width, and 15.0±2.0 mm in height.

Feature Summary

• Provides common mode noise suppression for AC power lines
• Supports high current handling up to 20 A
• Designed for PCB mounting via through-hole termination

Applications

• AC line filtering in industrial equipment
• EMI suppression in power supply inputs
• Interference suppression for sensitive electronic circuits

Procurement Notes

Verify the specific part number against official KEMET documentation to confirm electrical ratings and mechanical dimensions. Ensure compatibility with your PCB layout regarding through-hole spacing and height constraints. Cross-reference safety certifications if required for your specific application environment.

Selection Notes

Select this component when high current capacity is required alongside common mode noise reduction. The 3 mH inductance offers effective filtering for standard AC line frequencies. Consider the 20 A current rating to ensure adequate headroom for your load requirements without saturation.

Part Context

This component belongs to the KEMET SC series of common mode chokes. The series provides various inductance and current options for EMI suppression. The SC-20-300 specifically targets applications requiring robust performance under high current loads while maintaining low impedance characteristics.

Replacement Considerations

Consult official KEMET substitution guides for verified alternatives. Ensure any replacement matches the 3 mH inductance, 20 A current rating, and 250 VAC voltage rating. Verify mechanical footprint compatibility before implementation.