1537R-74J

Overview

The Delevan 1537R-74J is a fixed axial leaded inductor designed for radio frequency applications. It features a molded construction with an unshielded coil design and a phenolic core. The component provides a nominal inductance of 91 µH with a tolerance of ±5%. It has a maximum DC resistance of 4.3 Ohms and supports a maximum current rating of 154 mA. The unit operates within a temperature range of -55°C to 105°C and utilizes tin/lead terminal plating.

Feature Summary

• Molded active wire construction for mechanical stability
• Unshielded coil design suitable for general RF circuits
• Axial through-hole termination for PCB mounting

Applications

• Radio frequency signal processing
• General purpose inductive filtering
• Electronic circuit impedance matching

Procurement Notes

Verify the specific manufacturer source, as API Delevan assets are managed by different entities. Confirm RoHS compliance status, as historical data indicates mixed availability between compliant and non-compliant variants. Ensure the supplier provides valid traceability documentation for the tin/lead plating and phenolic core materials used in this specific part number.

Selection Notes

Select this component when a 91 µH inductance value is required for low-current RF environments. The unshielded design necessitates careful layout planning to minimize electromagnetic interference with adjacent traces. Verify that the operating temperature does not exceed 105°C and that the physical axial dimensions fit the target PCB footprint constraints.

Part Context

This part belongs to the 1537 series of fixed inductors manufactured by Delevan. The series includes various inductance values and tolerance options, all sharing similar axial package dimensions and molded construction techniques. These components are widely used in legacy and specialized electronic equipment requiring reliable through-hole inductive elements.

Replacement Considerations

Publicly confirmed substitute part numbers for the 1537R-74J were not identified in the provided reference data. Cross-referencing requires matching the 91 µH inductance, 154 mA current rating, 4.3 Ohm DCR, and axial package dimensions.