103R-681K

Overview

The Delevan 103R-681K is a fixed surface-mount RF inductor with a nominal inductance of 680 nH and a tolerance of ±10%. It features an unshielded construction using phenolic core material, housed in a 1010 rectangular package measuring 2.54 mm in length, 2.54 mm in width, and 1.91 mm in height. The component has a maximum DC resistance of 0.52 Ω and supports a current rating of 435 mA. It operates within a temperature range of -55°C to 125°C and is tested for inductance at 25 MHz.

Feature Summary

• Unshielded SMD design suitable for general-purpose RF applications
• Phenolic core material construction for stable inductance
• Surface mount mounting style for automated PCB assembly

Applications

• RF circuit filtering
• General-purpose inductance in high-frequency circuits
• Signal processing components

Procurement Notes

Verify the specific manufacturer designation, as API Delevan assets are often managed by other entities. Confirm RoHS compliance status through official documentation, as historical data varies. Ensure the 1010 package dimensions match the target footprint exactly. Validate the 435 mA current rating against thermal constraints in the final application environment before procurement.

Selection Notes

Select this component when an unshielded 680 nH inductor is required for space-constrained designs utilizing the 1010 footprint. Consider the 0.52 Ω DC resistance impact on circuit efficiency. Verify that the lack of shielding does not cause interference in dense layouts. Ensure the operating temperature range meets the environmental requirements of the deployment scenario.

Part Context

This part belongs to the Delevan series of fixed surface-mount inductors designed for radio frequency applications. These components are characterized by their compact rectangular form factor and phenolic core construction. They are intended for use in electronic circuits requiring precise inductance values in a small profile.

Replacement Considerations

Direct substitutes include the 1008R-681K from Delevan, which shares similar electrical characteristics but differs in package size. Cross-reference with other manufacturers offering 680 nH unshielded SMD inductors in compatible footprints if supply chain constraints exist.