105-331J

Overview

The Delevan 105-331J is a fixed surface-mount inductor with a nominal inductance of 330 nH and a tolerance of 5%. It features an unshielded wirewound construction on an iron core, housed in a nonstandard 2.54 x 2.54 mm footprint with a height of 1.91 mm. The component exhibits a maximum DC resistance of 250 mOhms and supports a maximum DC current of 620 mA. It maintains a minimum Q factor of 35 at 25 MHz and operates within a temperature range of -55°C to +125°C.

Feature Summary

• Unshielded wirewound design for minimal electromagnetic interference coupling
• Iron core construction providing stable inductance characteristics
• Compact nonstandard SMD package suitable for space-constrained PCB layouts

Applications

• RF circuit filtering
• General purpose inductive applications
• Signal processing networks

Procurement Notes

Verify the specific manufacturer source, as API Delevan assets have transitioned. Confirm RoHS compliance status directly with the supplier, as historical data indicates mixed availability between compliant and non-compliant variants. Ensure the nonstandard package dimensions align with your PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when an unshielded RF inductor is required to prevent magnetic shielding effects in adjacent circuits. The 330 nH value and 5% tolerance suit general RF tuning. Consider the 620 mA current rating against load requirements. Verify the exact physical footprint compatibility due to its nonstandard 2.54x2.54mm size compared to standard metric codes.

Part Context

This part belongs to the broader category of fixed surface-mount inductors manufactured by Delevan (formerly API Delevan). It shares functional similarities with other 330 nH RF inductors but is distinguished by its specific unshielded wirewound architecture and unique mechanical dimensions. It serves niche RF applications where shielding is undesirable.

Replacement Considerations

Direct substitutes include the HF1008R-331H or S1210R-331J from the same manufacturer family, though these differ in shielding status and package size. Cross-brand replacements require careful verification of DC resistance, current handling, and self-resonant frequency to ensure circuit performance parity.