105-472K

Overview

The Delevan 105-472K is a surface-mount RF inductor with an inductance of 4.7 µH and a tolerance of ±10%. It features a maximum DC resistance of 3.1 Ohms and a rated current of 305 mA. The component utilizes a ferrite core and wirewound construction within a compact SMD package measuring approximately 3.9 mm by 2.8 mm. Designed for radio frequency applications, it operates within a temperature range of -55°C to +125°C.

Feature Summary

• Wirewound ferrite core construction for stable RF performance
• Compact surface-mount footprint suitable for space-constrained designs
• Shielded design to minimize electromagnetic interference

Applications

• RF signal filtering
• Impedance matching networks
• Radio frequency choke circuits

Procurement Notes

This component is listed as obsolete and no longer manufactured by the original producer. Procurement requires sourcing from third-party distributors or surplus stock providers. Verification of authenticity and physical condition is essential due to the discontinued status. Buyers should confirm shelf life and storage history before acquisition to ensure reliability in critical RF applications.

Selection Notes

Engineers replacing this part must evaluate equivalent RF inductors with matching 4.7 µH inductance and similar DC resistance characteristics. Package dimensions and thermal ratings should be compared against available alternatives. Since the original part is discontinued, direct pin-to-pin replacements may not exist; functional equivalence in high-frequency environments must be validated through simulation or testing.

Part Context

The 105-472K belongs to Delevan's historical portfolio of fixed surface-mount inductors. This series was widely used in consumer electronics and communication devices requiring precise RF tuning. The manufacturer has since transitioned focus to newer product lines, rendering this specific model legacy status within the broader inductor market.