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108-183FS
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Product Detailed Parameters
- Description：FIXED IND 18UH 75MA 4.4 OHM SMD
- Series：108
- Mfr：Delevan
- Package：Tape & Reel (TR)
- Type：-
- Material - Core：Iron
- Inductance：18 µH
- Tolerance：±1%
- 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 108-183FS is a fixed surface-mount RF inductor with an inductance of 18 µH and a tolerance of ±5%. It features a maximum DC resistance of 4.4 Ohms and a rated current of 75 mA. The component operates within a temperature range of -55°C to +125°C, exhibiting a Q factor of 32 at 2.5 MHz and a self-resonant frequency of 21 MHz. It utilizes an iron core and is housed in a non-standard two-lead SMD package measuring 2.54 mm x 2.54 mm x 1.91 mm.
Feature Summary
- Unshielded construction utilizing an iron core for RF applications
- Standard surface mount termination for PCB integration
- Designed for operation across extended industrial temperature ranges
Applications
- RF signal processing circuits
- General purpose electronic filtering
- Inductive coupling components
Procurement Notes
Verify the active status and RoHS compliance details directly with the manufacturer or authorized distributors, as lifecycle notifications may affect availability. Confirm that the specific package dimensions and electrical tolerances align with your design requirements before finalizing procurement orders.
Selection Notes
Select this component when an unshielded 18 µH inductor with a 75 mA rating is required for space-constrained designs. Ensure the 4.4 Ohm DC resistance and 21 MHz self-resonant frequency meet the circuit's impedance and bandwidth specifications. Verify compatibility with standard SMT reflow processes.
Part Context
This part belongs to the Delevan 108 series of fixed surface-mount inductors. These components are engineered for compact RF and general-purpose electronics, offering reliable performance in small form factors. The series provides various inductance values and tolerance options to suit diverse circuit design needs.
Replacement Considerations
Public confirmed substitute: NLV25T-180J-EF (TDK). Verify pinout compatibility and electrical parameter alignment before substitution.
FAQ
What is the self-resonant frequency of the 108-183FS?
The self-resonant frequency is 21 MHz.
Is the 108-183FS shielded?
No, the 108-183FS is an unshielded inductor.
