103R-821J

Overview

The Delevan 103R-821J is a surface-mount RF inductor with an inductance of 820 nH and a tolerance of 5%. It features an unshielded construction using phenolic core material. The component supports a maximum DC current of 430 mA and has a maximum DC resistance of 530 mOhms. It operates within a temperature range of -55°C to +125°C, exhibits a minimum Q factor of 22 at 25 MHz, and achieves a self-resonant frequency of 160 MHz. The physical dimensions are 2.54 mm in length, 2.54 mm in width, and 1.91 mm in height.

Feature Summary

• Unshielded SMD design for standard RF circuit integration
• Phenolic core material construction
• Standard J-leaded terminal configuration

Applications

• RF signal processing circuits
• General purpose inductive filtering
• Surface mount PCB assembly

Procurement Notes

Verify the specific manufacturer source when sourcing this component, as multiple suppliers list variations such as the 103-821J variant which may differ in tolerance or resistance specifications. Confirm that the required part matches the 103R series designation to ensure compatibility with the intended electrical parameters and physical footprint requirements for the target application.

Selection Notes

Select this component for applications requiring a compact 1010 package size with moderate current handling capabilities. The unshielded design allows for flexible layout placement but requires consideration of magnetic coupling effects. Ensure the operating environment stays within the specified temperature limits and that the self-resonant frequency aligns with the target signal bandwidth.

Part Context

This component belongs to the 103R series of fixed inductors manufactured by Delevan (API Delevan). The series utilizes a rectangular phenolic core structure suitable for general-purpose RF applications. The 103R designation indicates a specific form factor and terminal style distinct from other Delevan series like the shielded 1008R or wirewound variants.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.