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Product Detailed Parameters
- Description：CMC 0.35UH 90 OHM 4A SMD
- Series：SRF4532TA
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：4A
- DC Resistance (DCR) (Max)：50mOhm
- Voltage Rating - DC：50V
- Voltage Rating - AC：-
- Operating Temperature：-55°C ~ 125°C
- Ratings：AEC-Q200
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.177" L x 0.126" W (4.50mm x 3.20mm)
- Height (Max)：0.118" (3.00mm)
- Package / Case：Horizontal, 4 PC Pad
- Inductance @ Frequency：350 nH @ 100 kHz
- Impedance @ Frequency：90 Ohms @ 100 MHz
- Qualification：-
- Grade：-
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Overview
The Bourns SRF4532TA-900Y is a shielded automotive-grade common mode choke designed for EMI suppression. It features a ferrite core and surface mount construction in an 1812 (4.5x3.2x2.8 mm) package. Key electrical parameters include a nominal impedance of 90 Ohms at 100 MHz, a maximum DC current rating of 4 A, and a maximum DC resistance of 50 mOhms. The component operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification.
Feature Summary
- Shielded construction minimizes electromagnetic radiation
- AEC-Q200 qualified for automotive reliability standards
- High current handling capability up to 4 A
- Compact footprint suitable for space-constrained PCB layouts
Applications
- Automotive electronic control unit signal lines
- In-vehicle infotainment system noise filtering
- ADAS sensor interface protection
- General automotive EMI suppression circuits
Procurement Notes
Verify the specific impedance suffix '900' corresponds to the required 90 Ohm specification during procurement. Confirm AEC-Q200 compliance requirements match the target automotive application. Ensure the 1812 package dimensions fit the designated PCB land pattern. Check that the 4 A current rating meets the circuit's operational demands without saturation.
Selection Notes
Select this component when high current capacity and compact size are prioritized for automotive noise filtering. The 90 Ohm impedance at 100 MHz targets specific frequency ranges; verify against the noise spectrum. Compare the 50 mOhm DCR against power loss constraints. Consider the shielded design if adjacent sensitive traces require reduced magnetic coupling.
Part Context
This part belongs to the Bourns SRF4532TA series of shielded common mode chokes. The series offers various impedance values while maintaining consistent physical dimensions and current ratings. It is engineered specifically for automotive environments requiring robust performance under thermal stress and vibration.
Replacement Considerations
Direct substitutes must match the 1812 package, 90 Ohm impedance, and 4 A current rating. Verify equivalent AEC-Q200 certification from alternative manufacturers. Ensure similar shielding effectiveness and DC resistance characteristics to maintain circuit performance integrity.
