105-181M

Overview

The Delevan 105-181M is a surface-mount RF inductor from the Series 105 family. It features an unshielded design with an inductance of 180 nH and a tolerance of 20%. The component has a maximum DC resistance of 190 mOhms and supports a maximum DC current of 710 mA. It utilizes standard two-terminal SMD/SMT termination for PCB mounting.

Feature Summary

• Unshielded micro chip inductor construction
• Standard two-terminal surface mount termination
• Designed for radio frequency applications

Applications

• RF circuit filtering
• Impedance matching networks
• General purpose RF signal processing

Procurement Notes

Verify the specific suffix (e.g., JS, M) as tolerances vary between 5% and 20%. Confirm RoHS compliance status as records indicate non-compliance for some variants. Check lead availability since the related 105-181JS model is listed as obsolete. Ensure the selected part matches the required inductance tolerance for the target RF application.

Selection Notes

Select this component for compact RF designs requiring unshielded inductors. Compare against shielded alternatives if electromagnetic interference is a concern. Verify that the 710 mA current rating meets the circuit's operational requirements. Consider the 1806 package dimensions for board space constraints.

Part Context

This part belongs to the Delevan Series 105 line of micro chip inductors. It is functionally similar to the 105-181JS but typically carries a 20% tolerance compared to the 5% tolerance of the JS variant. Both share identical electrical parameters regarding inductance and resistance values.

Replacement Considerations

The 105-181JS serves as a direct substitute with identical electrical specifications but offers tighter 5% tolerance instead of 20%. Other Series 105 variants provide different inductance values within the same physical footprint.