ST-101A

Overview

The KEMET ST-101A is a through-hole common mode choke designed for AM band applications. It operates within a frequency range of 0.5 to 7 MHz and provides an impedance of 3000 Ohms at 0.5 MHz. The component supports a maximum DC current of 0.2 A with a maximum DC resistance of 250 mOhms. It features a 50 V voltage rating and functions reliably between -20°C and +80°C.

Feature Summary

• Provides high impedance filtering specifically tuned for the AM broadcast band
• Utilizes through-hole mounting for secure PCB integration
• Supports continuous DC current up to 0.2 A

Applications

• AM radio receiver input stages
• Amplitude modulation signal processing circuits
• Electromagnetic interference suppression in audio equipment

Procurement Notes

Verify the specific part number against manufacturer documentation to confirm electrical ratings and physical dimensions. Ensure compatibility with existing PCB footprints and thermal management requirements before finalizing procurement decisions.

Selection Notes

Select this component when designing circuits requiring common mode noise rejection in the AM frequency spectrum. Consider the 0.2 A current limit and 250 mOhms resistance for power loss calculations. Verify that the through-hole package aligns with assembly capabilities.

Part Context

This component belongs to KEMET's ST series of common mode chokes. These filters are engineered to attenuate unwanted common mode signals while allowing differential signals to pass, making them suitable for communication and audio applications where signal integrity is critical.

Replacement Considerations

Check for direct substitutes from KEMET or other manufacturers offering similar impedance characteristics at 0.5 MHz and comparable current ratings. Ensure any replacement maintains the same through-hole footprint and operating temperature range.