1539M21

Overview

The Hammond Manufacturing 1539M21 is a heavy-duty RF choke from the 1539 series, designed for leaded applications. It features an unshielded drum core wirewound inductor construction with radial vertical cylinder packaging. Key electrical specifications include an inductance of 250 µH and a maximum DC current rating of 6.4 A. The component exhibits a maximum DC resistance of 59 mΩ, ensuring efficient performance in high-current RF filtering scenarios.

Feature Summary

• Heavy-duty hash choke design for robust RF interference suppression
• Unshielded drum core wirewound construction for stable inductance
• Radial vertical cylinder package for standard PCB mounting

Applications

• RF circuit filtering
• EMI suppression in power supplies
• High-current choke applications

Procurement Notes

Verify the specific manufacturer datasheet to confirm exact physical dimensions and tolerance levels before integration. Ensure compatibility with existing PCB footprints and thermal management requirements. Cross-reference part numbers with authorized distributors to confirm authenticity and availability status.

Selection Notes

Select this component when high DC current handling capability is required alongside significant RF attenuation. The 250 µH value suits applications needing substantial impedance at radio frequencies. Consider the unshielded nature of the design regarding potential magnetic coupling with nearby sensitive components during layout.

Part Context

This component belongs to the Hammond Manufacturing 1539 series of RF chokes. These are specialized fixed inductors engineered for demanding environments where heavy-duty performance is necessary. The series typically offers various inductance values tailored for different frequency ranges and current loads.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.