SF1174D

Overview

The RFMi SF1174D is a Surface Acoustic Wave (SAW) bandpass filter designed for signal conditioning applications. It operates at a center frequency of 374 MHz with a bandwidth ranging from 23 MHz to 23.3 MHz, covering a frequency range of 367 MHz to 381 MHz. The component features an insertion loss of approximately 8.6 dB to 10 dB and supports a voltage rating of 30 V. It utilizes an 117 Ohm impedance and is housed in an SM-3838-8 SMD/SMT package. The device is qualified under AEC-Q200 standards and functions within a temperature range of -45°C to +90°C.

Feature Summary

• Surface Acoustic Wave technology for precise RF signal filtering
• Automotive-grade qualification ensuring reliability in harsh environments
• Compact surface-mount design for efficient PCB integration

Applications

• General purpose RF communication systems
• Industrial control equipment requiring stable signal conditioning
• Automotive electronics utilizing the specified frequency bands

Procurement Notes

Verify the specific datasheet version to confirm exact insertion loss values, as sources vary between 8.6 dB and 10 dB. Ensure compatibility with the SM-3838-8 footprint during layout. Confirm AEC-Q200 certification requirements if deploying in automotive contexts. Cross-reference impedance specifications against system design parameters to ensure proper matching.

Selection Notes

Select this component when a 374 MHz center frequency with wide bandwidth is required. The 30 V rating allows for robust operation in higher power RF stages. Consider the 117 Ohm impedance for non-standard transmission line designs. Verify thermal management capabilities given the operating temperature limits.

Part Context

This part belongs to the SF series of SAW filters manufactured by RFMi. It serves as a specialized signal conditioning element distinct from other RFMi models like the RF1407D or SF2276D, which operate at different frequencies and impedances. The SF series focuses on general-purpose RF filtering solutions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official RFMi channels for direct equivalents or pin-compatible alternatives.