1539M28

Overview

The Hammond Manufacturing 1539M28 is a heavy-duty RF choke from the 1539 series, designed for industrial applications. It features an unshielded drum core wirewound construction with radial vertical cylinder leads. The component provides an inductance of 500 µH at a test frequency of 1 kHz and supports a DC current rating of 6.5 A. It exhibits a maximum resistance of 85 mOhm and has a lead spacing of 1.06 mm with a lead length of 25.4 mm.

Feature Summary

• Heavy-duty hash choke design suitable for demanding industrial environments
• Unshielded drum core wirewound construction for specific RF filtering needs
• Radial vertical cylinder package configuration for standard mounting

Applications

• Industrial automation circuits requiring robust RF suppression
• DC link choke applications in power electronics
• PLC and general electronic repair systems

Procurement Notes

Verify that the required inductance is exactly 500 µH and the continuous current rating meets or exceeds 6.5 A. Confirm that the unshielded nature of the drum core is acceptable for the electromagnetic interference environment. Ensure the radial vertical cylinder footprint with 1.06 mm lead spacing aligns with the PCB layout requirements before ordering.

Selection Notes

Select this component when a high-current RF choke is needed for industrial automation or PLC systems. The 6.5 A rating distinguishes it from lower-current alternatives. Consider the unshielded design if magnetic coupling with other components is not a concern. This model serves as a direct replacement for existing heavy-duty hash chokes in legacy industrial equipment designs.

Part Context

The 1539M28 belongs to the Hammond Manufacturing 1539 series of fixed inductors. This series specializes in heavy-duty RF chokes and DC link chokes for industrial use. Other models in the series vary in inductance and current ratings but share similar rugged construction standards for harsh operating conditions.

Replacement Considerations

Direct substitutes must match the 500 µH inductance, 6.5 A current rating, and radial vertical package. Verify lead spacing of 1.06 mm and lead length of 25.4 mm for mechanical compatibility.