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Product Detailed Parameters
- Description：CMC 25UH 1A 2LN 600 OHM SMD
- Series：SRF0905A
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：1A
- DC Resistance (DCR) (Max)：160mOhm
- Voltage Rating - DC：80V
- Voltage Rating - AC：-
- Operating Temperature：-40°C ~ 105°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.362" L x 0.236" W (9.20mm x 6.00mm)
- Height (Max)：0.248" (6.30mm)
- Package / Case：Horizontal, 4 PC Pad
- Inductance @ Frequency：25 µH @ 1 kHz
- Impedance @ Frequency：600 Ohms @ 20 MHz
- Qualification：-
- Grade：-
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Overview
The Bourns SRF0905A-250Y is a surface-mount common mode line filter featuring a ferrite core and unshielded construction. It provides an inductance of 25 µH at 1 kHz with a maximum DC current rating of 1 A. The component exhibits a maximum DC resistance of 160 mOhms and offers an impedance of 600 Ohms at 20 MHz. Designed for PCB mounting, it operates within a temperature range of -40°C to +105°C. The physical dimensions are 9.2 mm in length, 6 mm in width, and 5 mm in height, housed in a compact 0905 package.
Feature Summary
- Unshielded surface mount design utilizing a ferrite core for effective noise suppression
- AEC-Q200 qualified for automotive electronic applications ensuring reliability
- Compact 0905 footprint suitable for space-constrained circuit board layouts
Applications
- Automotive electronics systems requiring EMI filtering
- Signal line protection in consumer devices
- General purpose common mode noise suppression in power circuits
Procurement Notes
Verify the specific suffix 'A' against your bill of materials, as it denotes AEC-Q200 qualification which may differ from standard industrial variants. Confirm that the unshielded construction aligns with your electromagnetic interference requirements. Ensure the 0905 package dimensions fit within your designated PCB land pattern. Check that the 1 A current rating meets the operational load of your target application without saturation.
Selection Notes
Select this component when AEC-Q200 automotive qualification is mandatory for the design. The 25 µH inductance value targets specific frequency ranges for common mode noise attenuation. Consider the unshielded nature if magnetic coupling with nearby components must be minimized or managed. The low DC resistance supports efficient power transmission while maintaining filtering capabilities.
Part Context
This part belongs to the Bourns SRF0905 series of surface mount common mode chokes. The series includes various inductance values tailored for different filtering needs. The 'A' suffix specifically indicates compliance with automotive quality standards, distinguishing it from non-automotive grade counterparts in the same physical form factor.
Replacement Considerations
The SRF0905-250Y serves as a direct substitute but lacks the explicit AEC-Q200 automotive qualification found in the 'A' variant. Verify if the automotive grade requirement is critical for your specific application before swapping.
