SRF0502-251Y

Overview

The Bourns SRF0502-251Y is a surface-mount common mode filter from the SRF0502 series. It features a compact 5x5x2.5mm package with shielded construction. Key electrical parameters include an inductance of 550 nH, a DC resistance maximum of 0.02 ohms, and a DC current rating of 5 mA. The impedance is specified at 0.25 kOhms with a tolerance of +/-35%. The component operates within a temperature range of -40°C to +125°C.

Feature Summary

• Shielded design minimizes electromagnetic interference radiation
• Compact footprint suitable for space-constrained layouts
• Low DC resistance supports efficient signal transmission

Applications

• High-speed data line protection
• Portable electronic device filtering
• Consumer interface circuit noise suppression

Procurement Notes

Verify the specific suffix and manufacturer part number against official Bourns documentation to ensure correct impedance and current ratings. Confirm package dimensions and terminal compatibility with your PCB layout before ordering. Check for RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this component when low inductance and minimal DC resistance are critical for high-speed signals. The 5 mA current rating limits suitability for power lines; verify load requirements. The shielded structure is preferred where radiated emissions must be contained within tight spatial boundaries.

Part Context

This component belongs to the Bourns SRF0502 series of surface-mount common mode chokes. The series offers various inductance values within a standardized small outline package. These filters are designed for applications requiring effective noise suppression without significant signal degradation or excessive board space consumption.

Replacement Considerations

Consult official Bourns substitution guides for verified equivalents. Ensure any alternative maintains compatible impedance characteristics and physical dimensions for direct replacement.