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108R-273HS
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Product Detailed Parameters
- Description：FIXED IND 27UH 55MA 8 OHM SMD
- Series：108R
- Mfr：Delevan
- Package：Tape & Reel (TR)
- Type：-
- Material - Core：Iron
- Inductance：27 µH
- Tolerance：±3%
- 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 108R-273HS is an unshielded surface-mount RF inductor with a nominal inductance of 27 uH and a tolerance of 3%. It features a maximum DC resistance of 8 Ohms and a minimum Q factor of 32. The component has a self-resonant frequency of 14 MHz and supports a maximum DC current of 55 mA. Its physical dimensions are 2.54 mm in length, 2.54 mm in width, and 1.91 mm in height.
Feature Summary
- Unshielded wirewound construction for RF applications
- High Q factor performance at low frequencies
- Compact non-standard SMD footprint
Applications
- RF circuit filtering
- Impedance matching networks
- General purpose RF signal processing
Procurement Notes
Verify availability status as the component may be discontinued or subject to limited supply. Confirm RoHS compliance details through official datasheets before procurement. Ensure the specific suffix HS matches design requirements, as packaging or minor variations may exist. Check for end-of-life notifications from API Delevan to plan for long-term supply stability.
Selection Notes
Select this component for designs requiring a 27 uH inductance with tight 3% tolerance in an unshielded configuration. The high DC resistance of 8 Ohms limits suitability for high-current power paths, making it appropriate for low-current RF signal lines. Verify that the 55 mA current rating meets the operational requirements of the target circuit without saturation.
Part Context
This part belongs to the 108R series of fixed inductors manufactured by API Delevan. The series includes various values optimized for radio frequency applications. The 108R-273HS specifically denotes the 27 uH variant within this unshielded SMD lineup, distinct from shielded power inductor families like SP1812R.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult API Delevan for direct cross-reference recommendations or evaluate generic 27 uH unshielded SMD inductors with compatible Q and current ratings.
