SF2471E

Overview

The SF2471E is a Surface Acoustic Wave (SAW) notch filter manufactured by RFMi, an Akoustis brand. It operates at a center frequency of 915 MHz and is housed in an SM3030-8 surface-mount package. The component is designed for signal conditioning applications requiring precise frequency rejection within the 902–920 MHz range. It supports a supply voltage of 3V and maintains a 50 Ohm impedance. The device is RoHS compliant and intended for use in industrial IoT, automotive, medical, telecom, and consumer markets.

Feature Summary

• Provides high-reliability signal conditioning through SAW technology
• Engineered for precise notch filtering in the 915 MHz band
• Designed for integration into compact SMD/SMT layouts

Applications

• Industrial IoT systems requiring RF signal isolation
• Automotive electronics with specific frequency constraints
• Medical devices utilizing wireless communication bands
• Telecom infrastructure components
• Consumer market wireless devices

Procurement Notes

Verify the exact datasheet version from Akoustis or authorized distributors to confirm performance characteristics across temperature ranges. Ensure compatibility with 3V operation and 50 Ohm system impedance. Confirm RoHS compliance status if required by specific regional regulations. Cross-reference part numbers with RFMi's current portfolio as product lines may evolve.

Selection Notes

Select this component when a dedicated notch filter is required for the 915 MHz ISM band. Consider the SM3030-8 package size for space-constrained designs. Evaluate thermal performance requirements against the specified temperature coefficients for insertion loss and return loss. Ensure the application does not require passband transmission at the notch frequency.

Part Context

RFMi, now part of Akoustis, specializes in RF components using SAW, crystal, and ceramic technologies. The SF series includes various filters for signal conditioning. This model belongs to the broader portfolio aimed at digital and wireless applications, offering customized design capabilities alongside standard products for diverse industry sectors.

Replacement Considerations

Check for direct substitutes within the RFMi SF series that match the 915 MHz center frequency and 8-pin SMD footprint. Verify electrical equivalence regarding bandwidth and attenuation depth before substitution.