SF1186B-3

Overview

The RFMi SF1186B-3 is a Surface Acoustic Wave (SAW) bandpass filter designed for signal conditioning applications. It operates at a center frequency of 1.57542 GHz with a bandwidth of 18 MHz, covering the range from 1.56642 GHz to 1.58442 GHz. The component features a 50 Ohm impedance and a maximum voltage rating of 4 V. It utilizes an SMD/SMT surface mount package identified as SM-3030-6. The device supports board mounting and functions within a temperature range of -45 C to +85 C. It holds AEC-Q200 qualification and exhibits an insertion loss of 2.68 dB.

Feature Summary

• AEC-Q200 qualified for automotive reliability standards
• Surface Acoustic Wave technology for precise signal filtering
• Compact SM-3030-6 surface mount package design

Applications

• GPS receiver front-end filtering
• GNSS signal conditioning circuits
• Automotive navigation systems

Procurement Notes

Verify the specific suffix against official RFMi documentation to confirm exact electrical tolerances and packaging variations. Ensure the selected variant matches the required operating temperature range and voltage ratings for the target application environment. Cross-reference the part number with authorized distributors to confirm current availability and lead times before finalizing procurement plans.

Selection Notes

Select this component when a narrowband SAW filter is required for L1 GPS frequencies in space-constrained designs. The 50 Ohm impedance ensures compatibility with standard RF transmission lines. Consider the AEC-Q200 qualification if the application demands automotive-grade reliability. Evaluate the insertion loss specifications against system link budget requirements to ensure adequate signal integrity.

Part Context

This component belongs to the RFMi SF series of signal conditioning products. The series includes various SAW filters optimized for different frequency bands and impedance configurations. These devices are engineered to convert input signals into filtered outputs suitable for downstream processing stages in communication and navigation systems.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative components by matching center frequency, bandwidth, impedance, and package dimensions against the original design specifications.