SRF0905-250Y

Overview

The Bourns SRF0905-250Y is a surface-mount common mode filter choke from the SRF0905 series, designed for signal line filtering. It features an inductance of 25 µH at 1 kHz and a rated DC current of 1 A. The component exhibits a maximum DC resistance of 160 mOhms and an impedance of 600 Ohms at 20 MHz. It operates within a temperature range of -40°C to +105°C and utilizes a ferrite core. The physical dimensions are 9.2 mm in length, 6 mm in width, and 5 mm in height, housed in a compact 0905 package.

Feature Summary

• Utilizes a ferrite core material for effective common mode noise suppression in high-frequency applications.
• Provides a compact surface-mount footprint suitable for space-constrained PCB layouts.
• Engineered with low DC resistance to minimize power loss during operation.

Applications

• Signal line filtering in electronic circuits
• Common mode noise suppression in data transmission lines
• EMI reduction in consumer electronics

Procurement Notes

Verify the specific suffix 'Y' against the manufacturer's latest datasheet to confirm packaging details and compliance status. Ensure that the required operating temperature range aligns with the specified -40°C to +105°C limits. Cross-reference the impedance value at 20 MHz with system requirements to validate performance. Confirm that the 1A current rating meets the circuit's maximum load conditions without saturation.

Selection Notes

Select this component when a compact solution is needed for filtering common mode interference on signal lines. The 25 µH inductance offers a balance between attenuation and size. Consider the 160 mOhm DCR for efficiency requirements. The 0905 package allows for automated assembly. Evaluate the 600 Ohm impedance at 20 MHz to ensure it matches the target noise frequency spectrum.

Part Context

This part belongs to the Bourns SRF0905 series of common mode chokes. The series is characterized by its small surface-mount form factor and ferrite construction. These components are intended for use in applications requiring efficient noise suppression in limited board space. The SRF0905 series supports various inductance values to suit different filtering needs.

Replacement Considerations

Check for direct substitutes within the SRF0905 series with matching 25 µH inductance and 1A rating. Verify that any alternative maintains the same 0905 package dimensions and pin configuration. Ensure comparable impedance characteristics at 20 MHz and similar thermal ratings.

FAQ

What is the impedance of the SRF0905-250Y at 20 MHz?

The impedance is 600 Ohms at 20 MHz.

What is the maximum DC current rating for this component?

The maximum DC current rating is 1 A.

What type of core material is used in the SRF0905-250Y?

The component uses a ferrite core material.