SF2040B

Overview

The SF2040B is a Surface Acoustic Wave (SAW) filter manufactured by RFMi, an Akoustis brand. It operates at a nominal center frequency of 80.46 MHz with a passband bandwidth ranging from 4 MHz to 5 MHz. The component exhibits a typical insertion loss of 9.5 dB and supports a rated voltage of 30 V. Designed for signal conditioning in IF applications, it meets AEC-Q200 automotive qualification standards. The device is available in SMD/SMT packages, including the SMP-03 form factor, ensuring compatibility with automated surface-mount assembly processes.

Feature Summary

• Surface Acoustic Wave technology for precise signal filtering
• Automotive-grade reliability compliant with AEC-Q200 standards
• Optimized for intermediate frequency signal conditioning
• Designed for surface-mount integration

Applications

• Satellite Digital Audio Radio Service (SDARS) RF filtering
• Automotive infotainment system signal conditioning
• Intermediate frequency (IF) bandpass filtering

Procurement Notes

Verify the specific suffix (e.g., -2) against the required packaging configuration, as tape-and-reel quantities may vary. Confirm that the AEC-Q200 rating aligns with your automotive quality requirements. Ensure the SMP-03 package dimensions match your PCB footprint constraints. Cross-reference the exact bandwidth specification (4 MHz vs 5 MHz) with your circuit design needs before finalizing the order.

Selection Notes

Select this component when a narrow-band SAW filter is required for 80.46 MHz applications. The AEC-Q200 certification makes it suitable for automotive environments where high reliability is mandatory. Consider the 9.5 dB insertion loss impact on system gain budget. Verify that the 30 V rating exceeds the maximum expected signal levels in the application path.

Part Context

RFMi, now part of Akoustis Technologies, specializes in RF components utilizing SAW, crystal, and ceramic technologies. The SF2040B belongs to their signal conditioning portfolio, targeting wireless and digital communication systems. This series emphasizes compact form factors and high performance for modern electronic devices requiring precise frequency selection.

Replacement Considerations

Check for direct substitutes within the RFMi/Akoustis lineup or other SAW manufacturers offering identical 80.46 MHz center frequencies. Ensure any replacement matches the SMP-03 package outline and maintains comparable insertion loss and bandwidth specifications.

FAQ

What is the nominal center frequency of the SF2040B?

The nominal center frequency is 80.46 MHz.

Is the SF2040B qualified for automotive applications?

Yes, the component meets the AEC-Q200 automotive qualification standard.

What type of filter technology does the SF2040B use?

It utilizes Surface Acoustic Wave (SAW) technology.