SRF3216A-900Y

Overview

The Bourns SRF3216A-900Y is a surface-mount common mode choke designed for EMI suppression in data lines. It features a bifilar wound, shielded construction to minimize radiation. The component operates within a temperature range of -40°C to +125°C and meets AEC-Q200 automotive standards. Key electrical specifications include an impedance of 90 Ohms at 100 MHz, a maximum DC current rating of 400 mA, and a maximum DC resistance (DCR) of 300 mOhm. It utilizes a 3216 package with silver/nickel/tin terminations.

Feature Summary

• Shielded bifilar winding structure reduces electromagnetic interference radiation
• Automotive grade reliability compliant with AEC-Q200 standards
• Suitable for high-temperature environments up to 125°C

Applications

• Data line filtering in automotive electronics
• EMI suppression for USB interfaces
• Signal integrity protection in industrial communication systems

Procurement Notes

Verify the specific suffix 'Y' corresponds to the required tape and reel packaging configuration. Confirm that the 300 mOhm DCR and 400 mA current ratings align with the target circuit's power budget. Ensure the 3216 footprint matches the PCB layout constraints. Cross-reference the AEC-Q200 certification if automotive qualification is mandatory for the final assembly.

Selection Notes

Select this component when low-profile shielding is required to prevent crosstalk in dense layouts. The 90 Ohm impedance provides effective attenuation for high-frequency noise without excessive signal loss. Consider the 400 mA saturation current limit to ensure stable performance under peak load conditions. The wide operating temperature range supports deployment in harsh environmental conditions.

Part Context

This part belongs to the SRF3216A series of common mode chip inductors from Bourns. The series offers various impedance values tailored for different frequency suppression needs. The 'A' designation typically indicates specific automotive-grade manufacturing processes compared to standard commercial variants.

Replacement Considerations

Direct substitutes include other SMD common mode chokes with identical 3216 dimensions, 90 Ohm impedance, and similar current ratings. Verify pin compatibility and thermal characteristics before substitution.