RF3626D

Overview

The RF3626D is a Surface Acoustic Wave (SAW) filter manufactured by RFMi, designed for signal conditioning applications. It operates at a center frequency of 315 MHz with a defined frequency range spanning from 314.3 MHz to 315.7 MHz and a bandwidth of 1.06 MHz. The component features an insertion loss of 3.0 dB and utilizes a coupled resonator architecture. It is housed in an SM-3838-8 surface-mount package suitable for board mounting. The device supports an operating temperature range from -40°C to +105°C and holds AEC-Q200 qualification.

Feature Summary

• Utilizes coupled resonator technology for low-loss signal filtering
• AEC-Q200 qualified for automotive reliability standards
• Compact surface-mount design for space-constrained PCBs

Applications

• Automotive remote keyless entry systems
• Wireless access control transmitters
• Industrial telemetry links

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure correct packaging and tolerance specifications. Confirm that the SM-3838-8 footprint matches your PCB layout requirements. Check for any recent revisions to the AEC-Q200 certification status. Ensure compatibility with your assembly process temperatures given the 105°C maximum rating.

Selection Notes

Select this component when a narrow 1.06 MHz bandwidth is required at 315 MHz. The 3.0 dB insertion loss represents a trade-off between selectivity and signal strength. Consider the SM-3838-8 package dimensions for placement constraints. Verify impedance matching if interfacing with non-standard transmission lines, as standard SAW filters typically assume 50 Ohm systems unless specified otherwise.

Part Context

This part belongs to the RFMi RF series of SAW filters. RFMi, now part of Akoustis, specializes in radio frequency components using SAW, crystal, and ceramic technologies. The RF series targets digital and wireless communication markets, providing essential frequency selection elements for transmitters and receivers in mobile and fixed infrastructure.

Replacement Considerations

Cross-reference with other RFMi 315 MHz SAW filters in the SM-3838-8 package. Verify electrical parameters such as bandwidth and insertion loss against the original design requirements before substitution.