SF2081E

Overview

The SF2081E is a Surface Acoustic Wave (SAW) filter manufactured by RFMi, designed for signal conditioning applications. It operates with a center frequency of 1220 MHz and supports an impedance of 200 Ohms at a voltage rating of 3 V. The device functions within a bandwidth of 1195 to 1245 MHz, exhibiting an insertion loss ranging from 3.0 dB minimum to 4.0 dB maximum. This component utilizes the SM303 package format, providing a compact footprint suitable for integration into wireless communication systems requiring precise frequency selection.

Feature Summary

• Utilizes Surface Acoustic Wave technology for high-performance signal filtering
• Designed for specific impedance matching in radio frequency circuits
• Provides defined insertion loss characteristics within the operational bandwidth

Applications

• Wireless communication system signal conditioning
• Radio frequency front-end filtering
• Frequency selection in transceiver modules

Procurement Notes

Verify the exact package type and electrical specifications against the official RFMi datasheet before procurement. Ensure compatibility with the target circuit's impedance requirements and voltage ratings. Confirm RoHS compliance status if required by regulatory standards. Cross-reference the manufacturer part number to avoid confusion with similar models in the series.

Selection Notes

Select this component when a 1220 MHz center frequency and 200 Ohm impedance are required. Consider the insertion loss limits to ensure they meet system sensitivity requirements. Evaluate the physical dimensions of the SM303 package against available PCB space. Compare performance metrics with alternative SAW filters if stricter loss or bandwidth specifications are necessary.

Part Context

RFMi, now part of Akoustis Technologies, specializes in passive RF components using SAW, crystal, and ceramic technologies. The SF2081E belongs to their lineup of signal conditioning devices aimed at digital and wireless markets. These components support various communication standards by providing essential frequency filtering capabilities in compact surface-mount packages.