105R-392K

Description：FIXED IND 3.9UH 185MA 2.8OHM SMD
Series：105R
Mfr：Delevan
Package：Tape & Reel (TR)

SKU:8ecb86bbb40b Category: Fixed Inductors Brand: Delevan

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Product introduction

Product Detailed Parameters

Description：FIXED IND 3.9UH 185MA 2.8OHM SMD
Series：105R
Mfr：Delevan
Package：Tape & Reel (TR)
Type：-
Material - Core：Iron
Inductance：3.9 µH
Tolerance：±10%
Current Rating (Amps)：185 mA
Current - Saturation (Isat)：-
Shielding：Unshielded
DC Resistance (DCR)：2.8Ohm Max
Q @ Freq：25 @ 7.9MHz
Frequency - Self Resonant：57MHz
Ratings：-
Operating Temperature：-55°C ~ 125°C
Inductance Frequency - Test：7.9 MHz
Mounting Type：Surface Mount
Package / Case：Nonstandard, 2 Lead
Supplier Device Package：-
Size / Dimension：0.100" L x 0.100" W (2.54mm x 2.54mm)
Height - Seated (Max)：0.075" (1.91mm)

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105R-392K

Overview

The Delevan 105R-392K is a surface-mount RF inductor with a nominal inductance of 3.9 uH and a tolerance of 10%. It features a maximum DC current rating of 185 mA and a maximum DC resistance of 2.8 Ohms. The component has a minimum Q factor of 25 and a self-resonant frequency of 57 MHz. Its physical dimensions are 2.54 mm in length, 2.54 mm in width, and 1.91 mm in height. The device utilizes an unshielded wirewound core construction.

Feature Summary

Unshielded wirewound construction for RF applications
Standard SMD/SMT termination style
Ferrite core material

Applications

RF circuits
Power choke applications
General electronic filtering

Procurement Notes

Verify the current lifecycle status before procurement as this component may be discontinued or end-of-life. Confirm availability through authorized distributors or secondary market suppliers. Ensure that the specific package type matches the design requirements. Check for RoHS compliance details if required by the manufacturing process. Validate electrical parameters against the official datasheet to ensure compatibility with the target circuit design.

Selection Notes

Select this component for applications requiring a 3.9 uH inductance with a 10% tolerance. Consider the 185 mA current rating and 2.8 Ohm DC resistance when designing power paths. The unshielded design requires careful layout consideration to minimize electromagnetic interference. Verify that the 2.54 x 2.54 mm footprint fits within the PCB constraints. Ensure the operating frequency remains below the 57 MHz self-resonant frequency for intended performance.

Part Context

This part belongs to the 105/R series of fixed inductors manufactured by API Delevan. It is categorized under RF Inductors - SMD within the broader category of Inductors, Chokes & Coils. The component is designed for surface mount technology (SMT) installation on printed circuit boards. It serves as a passive electronic component for signal processing and power management tasks.