SF2248E

Overview

The RFMi SF2248E is a surface acoustic wave (SAW) bandpass filter designed for signal conditioning applications. It operates at a center frequency of 314.45 MHz with a bandwidth of 5 MHz, covering a range from 313.8 MHz to 315.1 MHz. The component features a 50-ohm impedance and a maximum voltage rating of 3 V. It utilizes an SMD/SMT termination type within an SM-3030-6 package. The device supports a minimum operating temperature of -30°C and a maximum of +70°C.

Feature Summary

• Provides precise signal filtering in the 314.45 MHz range using SAW technology
• Designed for compact integration via SMD/SMT mounting in small form factors
• Operates reliably within standard commercial temperature ranges

Applications

• General purpose RF signal conditioning
• Wireless communication systems requiring 315 MHz band filtering
• Industrial control equipment utilizing sub-GHz frequencies

Procurement Notes

Verify the specific suffix designation when ordering, as variants such as SF2248E-1 exist with identical electrical characteristics but potentially different packaging or handling specifications. Confirm RoHS compliance status directly with the manufacturer or authorized distributor prior to finalizing procurement decisions to ensure adherence to regulatory requirements.

Selection Notes

Select this component for designs requiring a narrow 5 MHz bandwidth at 314.45 MHz with a 50-ohm system impedance. Ensure the PCB layout accommodates the SM-3030-6 package dimensions. Verify that the operational environment remains within the specified -30°C to +70°C temperature range to maintain performance integrity.

Part Context

This part belongs to the RFMi SF series of signal conditioning components. It is categorized under bandpass filters within the broader signal conditioning product line. The manufacturer specializes in RF solutions, and this specific model targets applications needing reliable filtering in the sub-GHz spectrum.

Replacement Considerations

The SF2248E-1 is a documented variant with matching electrical parameters including 314.45 MHz frequency and 5 MHz bandwidth. Verify package compatibility and suffix-specific documentation before substitution.