SF2431D

Overview

The RFMi SF2431D is a Surface Acoustic Wave (SAW) bandpass filter designed for signal conditioning in radio frequency applications. It operates at a center frequency of 505 MHz with a bandwidth of 10 MHz, covering the range from 500 to 510 MHz. The component features a 50 Ohm impedance and an insertion loss of 3.2 dB. Rated for a maximum voltage of 3 V, it functions within a temperature range of -45°C to +125°C. Packaged in an SM3838-8 surface-mount format, it supports board mounting for wireless communication systems.

Feature Summary

• Utilizes Surface Acoustic Wave technology for efficient RF signal filtering
• Provides precise bandpass characteristics centered at 505 MHz
• Designed for low insertion loss and high suppression in general purpose RF circuits

Applications

• LTE wireless communication modules
• GPS and GNSS receiver front-ends
• ISM band signal processing
• Satellite broadcast reception systems

Procurement Notes

Verify the specific datasheet version and RoHS compliance status directly with the manufacturer or authorized distributor before procurement. Confirm that the SM3838-8 package dimensions align with your PCB footprint requirements. Ensure the operating voltage and temperature ranges meet your system's environmental specifications. Cross-reference the part number with official Akoustis/RFMi documentation to confirm current production status and availability.

Selection Notes

Select this component when a narrow 10 MHz bandwidth is required around 505 MHz. The 50 Ohm impedance matches standard RF transmission lines. Consider the 3.2 dB insertion loss impact on system sensitivity. The wide operating temperature range suits automotive or industrial environments. Verify compatibility with SMD reflow soldering processes for the specified package type.

Part Context

The SF2431D belongs to the SF series of SAW filters from RFMi, an Akoustis brand. This series targets digital and wireless communications using SAW technology. RFMi provides a broad range of RF components including ceramic DR filters and antennas. The SF series is commonly used in LTE, GPS, and ISM applications requiring compact, high-performance filtering solutions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data. Consult official RFMi/Akoustis documentation for direct replacements or cross-references.