1537R-68H

Overview

The Delevan 1537R-68H is a fixed, unshielded molded axial leaded inductor designed for through-hole mounting. It features an iron core and offers an inductance of 68 µH with a tolerance of ±2%. The component has a maximum DC resistance of 3.3 ohms and a rated current of 176 mA. It exhibits a Q factor of 55 at 2.5 MHz and a self-resonant frequency of 11 MHz. The operating temperature range spans from -55°C to +105°C.

Feature Summary

• Molded construction with an iron core for structural stability
• Unshielded design suitable for applications where magnetic shielding is not required
• Axial leaded termination for standard through-hole PCB integration

Applications

• RF circuit filtering
• General-purpose signal processing
• Power supply input/output stages

Procurement Notes

Verify the specific suffix 'H' against the manufacturer's official datasheet to confirm the exact tolerance and electrical parameters, as suffixes often denote critical variations. Ensure the ordering quantity aligns with the manufacturer's standard packaging requirements. Confirm RoHS compliance status if environmental regulations apply to the final assembly. Cross-reference the DigiKey part number 1537R-68H-ND for accurate sourcing channels.

Selection Notes

Select this component when a 68 µH inductance with low current handling (176 mA) is required in an axial package. The unshielded nature necessitates careful layout planning to avoid magnetic interference with nearby components. The wide temperature range supports operation in harsh environments. Compare the 3.3 ohm DC resistance against circuit loss requirements to ensure efficiency targets are met.

Part Context

This part belongs to the Delevan 1537 series of fixed inductors. The series typically includes various inductance values and tolerances, distinguished by alphanumeric suffixes. These components are characterized by their molded construction and axial leads, differentiating them from surface-mount alternatives like the 3090R series or common mode chokes in the CM9900R series.

Replacement Considerations

Direct substitutes within the same series include parts with similar inductance and tolerance, such as the 1537R-64H (56 µH). Verify that any replacement maintains the axial package dimensions and current rating constraints. Consult the manufacturer's cross-reference guide for approved equivalents.