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108-273FS
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Product Detailed Parameters
- Description：FIXED IND 27UH 55MA 8 OHM SMD
- Series：108
- Mfr：Delevan
- Package：Tape & Reel (TR)
- Type：-
- Material - Core：Iron
- Inductance：27 µH
- Tolerance：±1%
- Current Rating (Amps)：55 mA
- Current - Saturation (Isat)：-
- Shielding：Unshielded
- DC Resistance (DCR)：8Ohm Max
- Q @ Freq：32 @ 2.5MHz
- Frequency - Self Resonant：14MHz
- 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 108-273FS is a fixed surface-mount RF inductor with an inductance of 27 µH and a tolerance of 1%. It features a maximum DC resistance of 8 Ohms and a rated current of 55 mA. The component has a minimum Q factor of 32 and a self-resonant frequency of 14 MHz. Its physical dimensions are 2.54 mm in length, 2.54 mm in width, and 1.91 mm in height. The device is unshielded and utilizes standard terminations for PCB mounting.
Feature Summary
- Unshielded SMD construction for RF applications
- High precision 1% inductance tolerance
- Compact nonstandard lead footprint design
Applications
- RF circuit filtering
- Impedance matching networks
- Signal processing components
Procurement Notes
Verify the obsolete lifecycle status before procurement planning. Confirm availability through authorized distributors as stock levels vary. Ensure the specific 108-273FS designation matches the required 27 µH specification rather than similar variants like the 108R-273H. Request official datasheets to validate electrical parameters against current project requirements.
Selection Notes
Select this component for applications requiring precise 27 µH inductance in a compact surface-mount form factor. Consider the 55 mA current rating and 8 Ohm DC resistance when designing power-sensitive RF circuits. The unshielded nature requires careful layout consideration to minimize electromagnetic interference with adjacent sensitive traces.
Part Context
This part belongs to the Delevan fixed inductor family designed for radio frequency applications. It represents a specialized surface-mount solution offering high stability and tight tolerances. The component is distinct from axial or shielded series within the manufacturer's portfolio, focusing on space-constrained RF designs.
Replacement Considerations
Public confirmed substitute part numbers are not available. The component lifecycle status is listed as obsolete. Designers should evaluate alternative RF inductors with matching 27 µH specifications and compatible footprint dimensions.
