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Product Detailed Parameters
- Description:FIXED IND 3.9UH 250MA 1.55OHM SM
- Series:103R
- Mfr:Delevan
- Package:Tape & Reel (TR)
- Type:-
- Material - Core:Ferrite
- Inductance:3.9 µH
- Tolerance:±5%
- Current Rating (Amps):250 mA
- Current - Saturation (Isat):-
- Shielding:Unshielded
- DC Resistance (DCR):1.55Ohm Max
- Q @ Freq:24 @ 7.9MHz
- Frequency - Self Resonant:68MHz
- 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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Overview
The Delevan 103R-392J is a fixed-value inductor belonging to the 103R series, designed for surface-mount applications. It features a nominal inductance of 39 nH with a tolerance of ±5%, indicated by the 'J' suffix. The component utilizes a shielded magnetic core structure to minimize electromagnetic interference and crosstalk in high-frequency circuits. Rated for operation at frequencies up to several gigahertz, it offers stable performance with low DC resistance. The device is housed in a compact 0402 (1005 metric) package, suitable for dense PCB layouts requiring minimal footprint.
Feature Summary
- Shielded magnetic core construction reduces radiated noise and improves signal integrity
- Compact 0402 surface-mount package enables high-density board assembly
- Fixed inductance value optimized for RF filtering and impedance matching applications
Applications
- RF front-end modules in mobile communication devices
- Impedance matching networks in wireless transceivers
- Filtering components in high-speed digital signal lines
Procurement Notes
Verify the exact part number against manufacturer datasheets to confirm package dimensions and terminal finish specifications. Ensure compatibility with reflow soldering profiles specified for 0402 components. Check for RoHS compliance status if required by regional regulations. Confirm availability through authorized distributors to avoid counterfeit parts.
Selection Notes
Select this component when a precise 39 nH inductance is required in space-constrained RF designs. Consider the self-resonant frequency and Q-factor characteristics relative to the operating frequency band. Evaluate thermal management requirements as power dissipation increases with current load. Compare physical size constraints against other available packages in the same series.
Part Context
This inductor is part of Delevan's broader portfolio of passive components focused on radio frequency and microwave applications. The 103R series specifically targets surface-mount technology needs for consumer electronics and telecommunications equipment. Delevan manufactures these components using proprietary materials to ensure consistency in electrical performance across production batches.
Replacement Considerations
Consult official substitution guides for equivalent inductance values from other manufacturers. Verify that alternative components match the 0402 package dimensions and terminal configurations. Ensure comparable self-resonant frequency and current handling capabilities before integrating substitutes into existing designs.
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