RF3404D

Overview

The RF3404D is a surface-acoustic-wave (SAW) filter manufactured by Murata Electronics, designed for front-end selectivity in 433.92 MHz receivers. It operates within a frequency range of 433.72 MHz to 434.12 MHz with a bandwidth of 600 kHz. The component features an insertion loss of 1.6 dB and supports a voltage rating of 12 V. Input impedance is specified at 2.853 kOhms, while output impedance is 2.411 kOhms. It utilizes an 8-SMD, no-lead package measuring 4.0 mm x 4.0 mm x 1.4 mm. The device meets AEC-Q200 qualification standards and functions reliably between -40 °C and +125 °C.

Feature Summary

• Provides front-end selectivity for narrowband receiver applications
• Compact surface-acoustic-wave construction for space-constrained designs
• AEC-Q200 qualified for automotive reliability requirements

Applications

• 433.92 MHz remote control systems
• Automotive keyless entry receivers
• Industrial telemetry front-ends

Procurement Notes

Verify the manufacturer designation carefully, as RF3404D is also listed under RF Monolithics/RFMi. Confirm the specific datasheet version matches the required electrical parameters, particularly regarding impedance and temperature ratings. Ensure the package type corresponds to the 8-SMD configuration described in Murata documentation before finalizing procurement specifications.

Selection Notes

Select this component when designing for 433.92 MHz ISM band applications requiring high selectivity and low insertion loss. The AEC-Q200 qualification makes it suitable for automotive environments. Consider the 8-SMD footprint constraints during PCB layout. Verify that the 12 V voltage rating aligns with the system's power supply requirements.

Part Context

Murata Electronics produces a broad portfolio of SAW filters for wireless communication. The RF3404D belongs to their series of compact, low-loss filters targeting specific regional frequencies. This part addresses the need for reliable signal conditioning in short-range radio applications, distinguishing itself through its specific center frequency and automotive-grade certification.

Replacement Considerations

B39431B3760Z810 is identified as a similar alternative from Qualcomm. Verify pin compatibility and electrical parameter alignment before substitution.