SF2381E

Overview

The RFMi SF2381E is a Surface Acoustic Wave (SAW) bandpass filter designed for signal conditioning applications. It operates with a center frequency of 2492 MHz and supports a frequency range from 2489.5 MHz to 2494.5 MHz. The component features an insertion loss of 2.0 dB within the specified bandwidth and is rated for a voltage of 3 V. It utilizes a 50 Ohm impedance system and is packaged in a 6-terminal surface-mount device (SMD) configuration, suitable for integration into wireless communication systems requiring precise frequency selection.

Feature Summary

• Surface Acoustic Wave technology for high-performance signal filtering
• Bandpass design optimized for specific microwave frequency ranges
• Low insertion loss characteristics for efficient signal transmission
• Compact surface-mount package for automated assembly

Applications

• Wireless communication systems operating in the 2.4 GHz ISM band
• Signal conditioning modules requiring narrowband filtering
• RF front-end assemblies for IoT devices and short-range radios

Procurement Notes

Verify the exact package dimensions and terminal configuration against your PCB footprint before ordering. Confirm that the 3 V rating and 50 Ohm impedance align with your circuit design requirements. Ensure compatibility with your manufacturing process for 6-terminal SMD components. Check for any specific handling or storage conditions required by the manufacturer to maintain component integrity during assembly.

Selection Notes

Select this component when a SAW filter with a 2492 MHz center frequency is required. Consider the 2.0 dB insertion loss impact on overall system gain. Evaluate the 2489.5 to 2494.5 MHz bandwidth against your channel spacing needs. Compare the 6-terminal SMD package size against available board space constraints. Verify environmental ratings if the application involves extreme temperatures or humidity.

Part Context

RFMi, now part of Akoustis Technologies, specializes in RF components using SAW, crystal, and ceramic technologies. The SF2381E belongs to their lineup of signal conditioning filters targeting digital and wireless markets. This series supports applications in WiFi, GPS, LTE, and small cell infrastructure, providing reliable frequency selection for modern communication standards.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-referencing requires matching the 2492 MHz center frequency, 2.0 dB insertion loss, and 6-terminal SMD package. Consult official RFMi or Akoustis channels for validated alternatives.