1540M13

Overview

The Hammond Manufacturing 1540M13 is a heavy-duty RF choke from the 1540 series, designed for EMI/RFI filtering and energy storage in switching power supplies. It features a toroidal core with dimensions of 1.25 inches in diameter and 0.63 inches in height. The component provides an inductance of 700 uH and supports a DC current rating of 1.25A. It utilizes standard leaded termination for PCB mounting and exhibits a maximum DC resistance of 420 mOhms.

Feature Summary

• Heavy-duty construction suitable for high-current applications
• Toroidal design optimized for EMI and RFI filtering
• Leaded termination for direct PCB integration

Applications

• EMI and RFI filtering circuits
• Energy storage inductors for switching power supplies
• High-current RF choke applications

Procurement Notes

Verify the specific inductance value of 700 uH and the DC current rating of 1.25A against project requirements. Confirm that the maximum DC resistance of 420 mOhms meets circuit efficiency targets. Ensure the PCB layout accommodates the 1.25-inch diameter toroidal form factor and standard leaded mounting style.

Selection Notes

Select this component when high-current handling and robust EMI suppression are required. The 700 uH inductance makes it suitable for power supply filtering where significant energy storage is needed. Consider the physical size constraints due to the large toroidal core before finalizing the enclosure or board design.

Part Context

This part belongs to the Hammond Manufacturing 1540 series of RF chokes. These components are engineered for demanding industrial environments, offering reliable performance in power conversion systems. The series is characterized by its ability to handle substantial currents while maintaining effective noise filtration capabilities.

Replacement Considerations

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