RF3404E

Overview

The RF3404E is a surface-acoustic-wave (SAW) bandpass filter manufactured by Murata Electronics, designed for narrowband receiver front-end applications at 433.92 MHz. It operates within a frequency range of 433.72 MHz to 434.12 MHz with a bandwidth of 650 kHz. The component features an insertion loss of 2.3 dB and supports impedances of 150 Ohms and 175 Ohms. Rated for a maximum voltage of 12 V, it functions between -40°C and +125°C. Packaged in a compact SM-3030-6 SMD form factor measuring 3.00mm x 3.00mm x 1.38mm, it meets AEC-Q200 qualification standards.

Feature Summary

• Provides high-performance front-end selectivity for 433.92 MHz receivers using advanced SAW technology
• Achieves very low insertion loss with simple external impedance matching requirements
• Compact surface-mount design suitable for space-constrained board mounting

Applications

• Narrowband receiver front ends
• 433.92 MHz signal conditioning circuits
• Automotive electronics requiring AEC-Q200 qualified components

Procurement Notes

Verify the manufacturer designation carefully, as some distributor listings may incorrectly attribute this part to RFMi rather than Murata Electronics. Confirm the package type is SM-3030-6 and that the device holds AEC-Q200 automotive qualification. Ensure the specified center frequency is exactly 433.92 MHz and check for RoHS3 compliance status before finalizing procurement orders.

Selection Notes

Select this component when designing 433.92 MHz narrowband systems requiring low-loss filtering. It is appropriate for applications needing AEC-Q200 reliability and operation up to 125°C. Consider its 150/175 Ohm impedance options for matching networks. Verify that the 650 kHz bandwidth aligns with specific channel requirements for the target receiver architecture.

Part Context

This component belongs to the RF series of SAW filters from Murata Electronics. It utilizes proprietary SAW design and fabrication technology to deliver performance characteristics suitable for demanding radio frequency applications. The part is distinct from general-purpose crystals or oscillators, serving specifically as a passive bandpass filter for signal integrity.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Murata Electronics directly for equivalent or alternative SAW filter solutions if this specific model is unavailable.