SF1186G-6

Overview

The RFMi SF1186G-6 is a Surface Acoustic Wave (SAW) filter designed for signal conditioning in the Global Positioning System (GPS) L1 band. It operates at a center frequency of 1.57542 GHz with a specified bandwidth of approximately 2 MHz to 3 MHz, depending on the specific datasheet revision. The component features a 50 Ohm impedance and is housed in a compact SMD/SMT package suitable for surface mount assembly. It supports supply voltages ranging from 3V to 5V, ensuring compatibility with various low-power electronic systems requiring precise RF filtering.

Feature Summary

• Provides high-selectivity bandpass filtering for GPS L1 signals using SAW technology
• Optimized for low insertion loss and excellent out-of-band rejection
• Designed for robust performance in compact surface-mount applications

Applications

• GPS receiver front-end modules
• Navigation system signal conditioning
• GNSS tracking devices

Procurement Notes

Verify the exact bandwidth specification (2 MHz vs 3 MHz) against the latest manufacturer datasheet, as variations exist between the SF1186G and SF1186G-6 designations. Confirm the package footprint matches your PCB design requirements. Ensure the selected variant meets the required operating voltage range for your specific circuit design before finalizing procurement.

Selection Notes

Select this component when a dedicated SAW filter is required for the GPS L1 frequency band. Consider the trade-off between the tighter 2 MHz bandwidth of the standard SF1186G and the potentially wider 3 MHz bandwidth of the SF1186G-6 based on your system's channel spacing needs. Verify that the SMD package dimensions are compatible with your automated assembly process.

Part Context

The SF1186G-6 belongs to the RFMi (now Akoustis) portfolio of precision RF filters. These components are engineered for high-frequency applications where size and performance are critical. The product line typically includes variants tailored for different bandwidths and package styles within the same frequency family, allowing designers to choose the optimal solution for specific GNSS or communication protocols.

Replacement Considerations

Direct substitutes may include other GPS L1 SAW filters from manufacturers like Murata or TDK, provided they match the 1.57542 GHz center frequency and compatible SMD footprint. Cross-referencing electrical characteristics such as insertion loss and bandwidth is essential to ensure equivalent performance in the target application.