108-473J

Overview

The Delevan 108-473J is a fixed surface-mount inductor with an inductance of 47 µH and a tolerance of ±5%. It features an unshielded wirewound construction on a ferrite core, designed for established reliability applications. The component supports a maximum DC current of 36 mA and exhibits a maximum DC resistance of 19 Ohms. It operates within a temperature range of -55°C to +125°C and utilizes non-standard SMD/SMT termination for PCB mounting.

Feature Summary

• Unshielded wirewound design utilizing a ferrite core for stable inductance performance.
• Established reliability classification suitable for demanding electronic environments.
• Surface mount package configuration optimized for direct PCB integration.

Applications

• RF signal processing circuits
• Power supply filtering stages
• General-purpose electronic assemblies

Procurement Notes

Verify RoHS compliance status carefully as the component contains lead and is marked non-compliant with standard RoHS directives. Confirm that the non-standard package dimensions align with the target PCB footprint. Ensure the 36 mA current rating meets the specific circuit requirements to prevent saturation or thermal issues during operation.

Selection Notes

Select this component when a high-inductance value is required in a compact surface-mount form factor. The unshielded nature may necessitate careful layout planning to minimize electromagnetic interference coupling. Verify that the 19 Ohm DC resistance does not introduce excessive voltage drop in the intended power path compared to lower-resistance alternatives.

Part Context

This part belongs to the API Delevan family of fixed inductors, specifically categorized under unshielded surface-mount types. It shares the 47 µH nominal value with other variants like the 108-473JS but differs in current handling and resistance specifications. The series is recognized for its use in military and aerospace-grade electronics requiring established reliability standards.

Replacement Considerations

The 108-473JS is a documented variant within the same product line. While it shares the 47 µH inductance, it offers a higher current rating of 36 mA (same) but potentially different resistance characteristics. Verify mechanical fit and electrical parameters before substitution.