1537R-92H

Overview

The Delevan 1537R-92H is a fixed, unshielded molded RF inductor designed for through-hole mounting. It features an axial lead termination style and utilizes an iron core material. The component provides an inductance of 220 µH with a tight tolerance of ±3%. It exhibits a maximum DC resistance of 7.45 ohms and supports a maximum current of 176 mA. The unit achieves a minimum Q factor of 65 at the test frequency of 2.5 MHz and has a self-resonant frequency of 11 MHz. It operates within a temperature range of -55°C to +125°C.

Feature Summary

• Molded construction with an iron core for stable RF performance
• Unshielded design suitable for applications requiring minimal magnetic interference
• Axial lead termination for reliable through-hole PCB integration

Applications

• RF circuit filtering
• Impedance matching networks
• Signal processing stages

Procurement Notes

Verify that the specific order matches the 1537R-92H designation to ensure correct inductance and tolerance values. Confirm that the axial package dimensions align with the target PCB footprint. Check for RoHS compliance status as military variants may differ from standard commercial versions. Ensure the selected supplier provides valid traceability documentation for the manufacturing batch.

Selection Notes

Select this component when a high-inductance value is required in a compact axial form factor. The 220 µH rating suits low-frequency RF applications compared to smaller series values. Consider the 7.45 ohm DC resistance for power loss calculations in the circuit design. The unshielded nature requires layout planning to prevent coupling with adjacent components.

Part Context

This part belongs to the Delevan 1537R series of molded RF inductors. The series offers various inductance values ranging from nanohenries to microhenries. All units share a consistent physical envelope size of 9.53 mm length and 3.96 mm diameter. The series is characterized by its use of iron cores and axial leads for general-purpose RF electronics.

Replacement Considerations

Cross-reference with other 220 µH axial inductors if supply is limited. Verify that substitute parts match the 7.45 ohm DC resistance and 176 mA current limits. Ensure replacement components support the same -55°C to +125°C operating temperature range.