SF2252E

Overview

The RFMi SF2252E is a Surface Acoustic Wave (SAW) bandpass filter designed for general-purpose RF applications. It operates at a center frequency of 1.59 GHz with a passband range of 1.58 GHz to 1.62 GHz, providing a bandwidth of 55 MHz. The component features a voltage rating of 3 V and an insertion loss of 2.3 dB. It utilizes a 50 Ohm impedance interface and is available in a surface-mount package.

Feature Summary

• Surface Acoustic Wave technology for precise signal filtering
• General-purpose RF application suitability
• Low insertion loss for efficient signal transmission

Applications

• General purpose RF systems
• Wireless communication modules
• Frequency control elements in transmitters

Procurement Notes

Verify the specific datasheet version and RoHS compliance status directly with the manufacturer or authorized distributor before procurement. Confirm that the 3 V voltage rating and 50 Ohm impedance align with your circuit design requirements. Ensure the surface-mount package dimensions are compatible with your PCB layout constraints.

Selection Notes

Select this component when a SAW filter is required for the 1.59 GHz ISM band or similar general-purpose RF frequencies. Consider the 2.3 dB insertion loss and 55 MHz bandwidth against system sensitivity and channel spacing requirements. Verify compatibility with standard SMD assembly processes and ensure the operating temperature range meets environmental specifications.

Part Context

RFMi, now part of Akoustis Technologies, specializes in RF components based on SAW, crystal, and ceramic technologies. The SF series represents their line of bandpass filters designed for digital and wireless applications. These devices serve as critical frequency control elements in transmitters and receivers, offering high selectivity and reliability for modern communication systems.

Replacement Considerations

The SF2254E is a related model within the same family but operates at a different frequency (872.5 MHz). Substitution requires verifying frequency alignment. No other direct public substitutes are confirmed for this specific 1.59 GHz specification.