RF1404C

Overview

The RF1404C is a surface-acoustic-wave (SAW) bandpass filter manufactured by Murata Electronics. Designed for narrowband receiver front-end applications, it operates at a center frequency of 433.92 MHz with a bandwidth of 700 kHz (range: 433.8 MHz to 434.12 MHz). The component features a nominal impedance of 227 Ohms and an insertion loss of 2.4 dB. It supports a maximum voltage rating of 12 V and is housed in an SM-5050-8 SMD/SMT package. The device meets AEC-Q200 qualification standards and functions within a temperature range of -40°C to +105°C.

Feature Summary

• Provides front-end selectivity for 433.92 MHz receivers using low-loss SAW technology
• Compact surface-mount design suitable for space-constrained circuit boards
• Automotive-grade reliability certified under AEC-Q200 standards

Applications

• Narrowband receiver front ends
• 433.92 MHz signal conditioning circuits
• Automotive electronic systems requiring robust RF filtering

Procurement Notes

Verify the manufacturer designation carefully, as some listings attribute this part to RFMi while official documentation identifies Murata Electronics as the producer. Confirm the specific package variant and ensure compliance with the required AEC-Q200 automotive qualification before integration into final designs.

Selection Notes

Select this component when designing for the 433.92 MHz ISM band with strict requirements for low insertion loss and high selectivity. Ensure the system impedance matches the 227 Ohm specification and that the operating environment stays within the specified -40°C to +105°C thermal limits for reliable performance.

Part Context

This component belongs to the RF series of signal conditioning devices from Murata Electronics. It is categorized specifically as a SAW filter within the broader filters subcategory. The part is engineered to replace older discrete filtering solutions with a more integrated, compact, and cost-effective surface-mount alternative for industrial and automotive radio applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.