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Product Detailed Parameters
- Description：CMC 4.7MH 400MA 2LN 4 KOHM SMD
- Series：SRF0905A
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：400mA
- DC Resistance (DCR) (Max)：900mOhm
- 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：4.7 mH @ 100 kHz
- Impedance @ Frequency：4 kOhms @ 300 kHz
- Qualification：-
- Grade：-
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Overview
The SRF0905A-472Y is a two-line shielded common mode choke manufactured by Bourns Inc. It features an inductance of 4.7 mH at 100 kHz and offers an impedance of 4 kOhms at 3 MHz. The component supports a maximum DC current of 400 mA with a maximum DC resistance of 900 milliohms. Rated for 80 V DC, it operates within a temperature range of -40°C to 105°C. The device utilizes a horizontal surface mount package measuring 9.20 mm x 6.00 mm x 5.30 mm and holds AEC-Q200 qualification.
Feature Summary
- Shielded design minimizes electromagnetic interference coupling
- AEC-Q200 qualified for automotive reliability standards
- Horizontal surface mount configuration for compact integration
Applications
- Automotive infotainment systems
- Advanced driver assistance systems (ADAS)
- Time-sensitive networking interfaces
Procurement Notes
Verify the specific suffix 'Y' against official Bourns documentation to confirm tolerance and packaging specifications. Ensure the selected variant matches the required impedance curve and current rating for the target circuit. Confirm RoHS compliance status and moisture sensitivity level requirements prior to ordering.
Selection Notes
Select this component when high inductance is required in a small footprint for automotive applications. The 400 mA rating suits low-power signal lines. Verify that the 900 milliohm DCR meets voltage drop constraints. Ensure the 80 V DC rating exceeds the operating voltage of the protected circuit.
Part Context
This part belongs to the SRF0905A series of shielded common mode chokes designed for automotive electronics. The series provides options for various inductance values while maintaining consistent physical dimensions. These components are engineered to suppress noise in data lines where space is limited and reliability is critical.
Replacement Considerations
Check Bourns datasheets for other SRF0905A variants with matching 4.7 mH inductance and 400 mA current ratings. Verify pin compatibility and impedance characteristics before substituting.
