SRF0905A-251Y

Overview

The Bourns SRF0905A-251Y is a surface-mount common mode line filter from the SRF0905A series. It features an inductance of 250 µH at 100 kHz with a tolerance of ±50%. The component has a maximum DC current rating of 1.2 A and a maximum DC resistance of 0.13 Ω. Impedance is specified as 600 Ω at 3 MHz. It utilizes a ferrite core and operates within a temperature range of -40°C to +105°C. The package dimensions are 9.2 mm x 6 mm x 5 mm.

Feature Summary

• AEC-Q200 qualified for automotive reliability standards
• Ferrite core construction for effective noise suppression
• Compact 0905 surface mount footprint

Applications

• Automotive electronic circuit protection
• Common mode noise filtering in data lines
• Signal integrity enhancement in compact modules

Procurement Notes

Verify the specific suffix 'Y' against official Bourns documentation to confirm packaging configuration. Ensure the part number matches the exact electrical specifications required for your design, particularly the 250 µH inductance and 1.2 A current rating. Cross-reference the AEC-Q200 certification if automotive compliance is mandatory for your application.

Selection Notes

Select this component when a compact, automotive-grade common mode choke is required for high-frequency noise suppression. The 0905 package size suits space-constrained designs. Verify that the 1.2 A saturation current and 0.13 Ω DCR meet the power handling requirements of the target circuit without excessive voltage drop or thermal issues.

Part Context

This component belongs to the Bourns SRF0905A series of surface-mount common mode chokes. The series is designed for applications requiring robust EMI/RFI filtering in small form factors. The 'A' designation typically indicates specific automotive qualification or material variations compared to standard industrial versions.

Replacement Considerations

Direct substitutes include other parts from the SRF0905A family with matching inductance and current ratings, such as the SRF0905A-501Y for higher inductance needs. Ensure any replacement maintains the same package dimensions and AEC-Q200 status if automotive use is intended.