105-391K

Overview

The Delevan 105-391K is an unshielded surface-mount RF inductor with a nominal inductance of 390 nH and a tolerance of ±10%. It features a maximum DC resistance of 280 mΩ and supports a maximum DC current of 585 mA. The component exhibits a minimum Q factor of 35 and a self-resonant frequency of 185 MHz. Its physical dimensions are 2.54 mm in length, 2.54 mm in width, and 1.91 mm in height. The device operates within a temperature range of -55°C to 125°C.

Feature Summary

• Unshielded SMD construction for compact RF circuit integration
• High self-resonant frequency capability for high-frequency applications
• Robust thermal performance across extended industrial temperature ranges

Applications

• RF signal processing circuits
• Impedance matching networks
• Filter design in radio frequency systems

Procurement Notes

Verify availability status carefully as this component may be discontinued or subject to limited supply constraints. Confirm the specific suffix 'K' denotes the correct tolerance level required for your design. Ensure that the unshielded package type aligns with your PCB layout and electromagnetic interference requirements before finalizing procurement orders.

Selection Notes

Select this component when an unshielded inductor is necessary to minimize size and cost in RF designs. The 390 nH value suits specific impedance matching needs at frequencies below the 185 MHz self-resonant point. Consider the 585 mA current rating to ensure reliable operation under expected load conditions without saturation.

Part Context

This part belongs to the Delevan 105/R series of fixed inductors designed for surface-mount technology. It serves as a passive component for filtering and tuning in electronic circuits. The series offers various inductance values tailored for different RF applications, providing consistent electrical characteristics across the product line.

Replacement Considerations

Public sources indicate the 105-391J variant shares identical electrical parameters but differs in tolerance (±5% vs ±10%). Verify if tighter tolerance requirements necessitate this substitute. No other direct public substitutes are confirmed for this specific model.