103R-821F

Overview

The Delevan 103R-821F is an unshielded surface-mount RF inductor with an inductance of 820 nH and a tolerance of ±1%. It features a maximum DC resistance of 530 mOhms and supports a maximum DC current of 430 mA. The component has a minimum Q factor of 25 at a test frequency of 25 MHz, with a self-resonant frequency of 160 MHz. Its physical dimensions are 2.54 mm in length, 2.54 mm in width, and 1.91 mm in height.

Feature Summary

• Unshielded SMD construction for standard RF circuit integration
• High precision inductance tolerance of ±1% for stable signal performance
• Ferrite core material providing defined magnetic properties

Applications

• RF filtering circuits
• Impedance matching networks
• General-purpose RF signal processing

Procurement Notes

Verify the specific suffix 'F' against official manufacturer documentation to confirm the exact tolerance and electrical characteristics. Confirm RoHS compliance status as indicated in source data. Ensure the ordering quantity matches the reel packaging specifications provided by the supplier. Cross-reference the part number with the latest datasheet to validate all parameters before procurement.

Selection Notes

Select this component when a precise 820 nH inductance with tight ±1% tolerance is required for RF applications. Consider the unshielded design for cost-sensitive or non-interference-critical layouts. Evaluate the 430 mA current rating against circuit load requirements. Compare the 530 mOhm DCR impact on insertion loss relative to other available options in the 103/R series.

Part Context

The 103R-821F belongs to the Delevan 103/R series of RF inductors. This series offers various inductance values and tolerances in a compact SMD package. The 'R' suffix typically denotes the series family, while the numeric code indicates the inductance value. These components are designed for high-frequency applications requiring reliable performance.

Replacement Considerations

The 103-821HS is a similar unshielded variant but differs in tolerance (±3%) and current rating (430 mA). Verify if the looser tolerance meets design requirements. No direct shielded equivalents exist within the same footprint without changing the series.