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108R-183G
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Product Detailed Parameters
- Description：FIXED IND 18UH 75MA 4.4 OHM SMD
- Series：108R
- Mfr：Delevan
- Package：Tape & Reel (TR)
- Type：-
- Material - Core：Iron
- Inductance：18 µH
- Tolerance：±2%
- Current Rating (Amps)：75 mA
- Current - Saturation (Isat)：-
- Shielding：Unshielded
- DC Resistance (DCR)：4.4Ohm Max
- Q @ Freq：32 @ 2.5MHz
- Frequency - Self Resonant：21MHz
- Ratings：-
- Operating Temperature：-55°C ~ 125°C
- Inductance Frequency - Test：2.5 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 108R-183G is a fixed surface-mount inductor from the 108R series, designed for RF applications. It features an unshielded construction with a ferrite core and non-standard package dimensions of approximately 2.66mm length by 2.41mm width. The component provides an inductance of 18 µH with a tight ±2% tolerance. It supports a maximum DC current of 75 mA and has a maximum DC resistance of 4.4 Ohms. The self-resonant frequency is specified at 76 MHz, with a Q factor of 30 measured at 7.9 MHz. It operates within a temperature range of -55°C to +125°C.
Feature Summary
- Unshielded design suitable for general RF filtering
- High precision inductance with ±2% tolerance
- Ferrite core construction for stable performance
- Surface-mount installation for automated assembly
Applications
- RF signal filtering circuits
- Impedance matching networks
- General purpose RF choke applications
Procurement Notes
Verify the specific manufacturer part number against official API Delevan documentation to confirm active lifecycle status and exact physical dimensions. Ensure that the non-standard package footprint matches the target PCB layout requirements before finalizing procurement decisions.
Selection Notes
Select this component when precise 18 µH inductance is required in compact RF designs. Consider the low current rating of 75 mA and ensure the circuit does not exceed saturation limits. The unshielded nature requires adequate spacing from sensitive traces to prevent magnetic interference.
Part Context
This part belongs to the 108R series of fixed inductors manufactured by API Delevan. These components are specifically tailored for radio frequency environments where small form factors and high stability are critical. The series utilizes ferrite cores to achieve desired electrical characteristics in surface-mount packages.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided source data. Verify compatibility with alternative suppliers using identical electrical parameters and mechanical footprint specifications.
