SF2224E

Overview

The RFMi SF2224E is a Surface Acoustic Wave (SAW) bandpass filter designed for signal conditioning applications. It operates at a center frequency of 1950 MHz with a bandwidth of 70 MHz, covering the range from 1920 MHz to 1980 MHz. The component features a 50-ohm impedance and is rated for a maximum voltage of 3 V. It utilizes an SMD/SMT termination type within an SM30 package, specifically identified as SM-3030-6 in some documentation, though other sources cite SM30 dimensions of 3.00mm x 3.00mm. The device supports operating temperatures between -40°C and +105°C and holds AEC-Q200 qualification.

Feature Summary

• AEC-Q200 qualified for automotive reliability standards
• Surface Acoustic Wave technology for precise signal filtering
• Compact surface-mount design suitable for space-constrained PCBs

Applications

• General purpose RF signal conditioning
• Wireless communication systems requiring 1950 MHz filtering
• Automotive electronics due to AEC-Q200 certification

Procurement Notes

Verify the specific package designation against official datasheets, as references vary between SM30 and SM-3030-6. Confirm that the 70 MHz bandwidth aligns with system requirements for the 1920-1980 MHz range. Ensure the supplier provides documentation confirming AEC-Q200 compliance if used in automotive contexts. Cross-reference insertion loss specifications, as values may differ slightly between manufacturer revisions.

Selection Notes

Select this component when a 1950 MHz center frequency with narrow 70 MHz bandwidth is required. The AEC-Q200 rating makes it suitable for automotive environments where thermal stability up to 105°C is necessary. Compare insertion loss figures against system link budget requirements. Ensure the SMD footprint matches the PCB layout constraints defined by the SM30 or equivalent package dimensions.

Part Context

RFMi, now part of Akoustis Technologies, specializes in SAW, crystal, and ceramic RF components. The SF series includes various SAW filters for wireless applications. This model targets markets requiring reliable filtering in the 1.9 GHz range, such as cellular and IoT devices. The company emphasizes high-performance solutions for WiFi, GPS, and LTE bands.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with direct replacements through electrical parameter matching rather than assumed interchangeability.