SF2157A

Overview

The RFMi SF2157A is a Surface Acoustic Wave (SAW) filter designed for signal conditioning applications. It operates within a frequency range of 146 MHz to 166 MHz, centered at 156 MHz, with a bandwidth of 22 MHz. The component features a 50 Ohm impedance and a maximum voltage rating of 30 V. It exhibits an insertion loss of 10 dB and utilizes SMD/SMT termination in the SM13365-12 package. The device supports board mounting and functions reliably between -40°C and +85°C.

Feature Summary

• Low insertion loss SAW filter technology
• Bandpass signal conditioning capability
• SMD/SMT surface mount construction

Applications

• RF signal path filtering
• Wireless communication systems
• IoT connectivity modules

Procurement Notes

Verify the specific manufacturer part number against official RFMi documentation to ensure compatibility with your design requirements. Confirm that the SM13365-12 package dimensions align with your PCB layout constraints. Check for any RoHS compliance details or specific testing certifications required by your supply chain standards before finalizing procurement orders.

Selection Notes

Select this component when a bandpass filter is needed for frequencies around 156 MHz. Ensure the system impedance matches the 50 Ohm specification. Consider the operating temperature range of -40°C to +85°C for environmental suitability. Verify that the 10 dB insertion loss meets the link budget requirements of the application.

Part Context

This component belongs to the RFMi SF series, which focuses on signal conditioning products. RFMi, an Akoustis brand, specializes in RF components using SAW, crystal, and ceramic technologies. The company targets non-mobile phone and professional applications, including M2M and IoT connectivity solutions.

Replacement Considerations

No public substitute part numbers are confirmed for this specific model.