RF1404D

Overview

The Murata RF1404D is a Surface Acoustic Wave (SAW) bandpass filter designed for 433.92 MHz applications. It operates within a frequency range centered at 433.92 MHz with a bandwidth of 600 kHz. The device features a low insertion loss of 1.6 dB and an impedance of 227 Ohms. Rated for a voltage of 12 V, it utilizes an 8-SMD, no-lead package measuring 3.80 mm by 3.80 mm.

Feature Summary

• Provides front-end selectivity for 433.92 MHz receivers using coupled-resonator quartz design
• Enables simple external impedance matching for superhet, direct conversion, and superregen architectures
• Delivers low-loss signal filtering to support wireless remote-control and security devices

Applications

• European wireless remote-control systems compliant with ETSI I-ETS 300 220
• Security devices operating in the 433.92 MHz band
• Superheterodyne receivers utilizing 10.7 MHz or 500 kHz intermediate frequencies
• Direct conversion receiver front-ends
• Superregen receiver designs

Procurement Notes

Verify component authenticity through authorized Murata channels due to potential availability variations. Confirm package dimensions and pinout compatibility during integration. Ensure environmental compliance requirements match project specifications. Validate electrical parameters against current datasheet revisions before finalizing procurement decisions.

Selection Notes

Select this component for designs requiring precise 433.92 MHz filtering with minimal insertion loss. Consider the 227 Ohm impedance when designing matching networks. Evaluate the 8-SMD package size for PCB layout constraints. Verify suitability for specific receiver topologies such as superhet or direct conversion architectures.

Part Context

This SAW filter belongs to Murata's portfolio of RF components targeting European ISM band applications. It serves as a critical front-end element for maintaining signal integrity in crowded radio environments. The device supports various receiver architectures commonly used in industrial and consumer remote control systems.

Replacement Considerations

RF1404C is a documented substitute part number from Murata Manufacturing Co offering similar 433.92 MHz SAW filter characteristics.