SF1186K-3

Overview

The Murata Electronics SF1186K-3 is a surface acoustic wave (SAW) bandpass filter designed for signal conditioning applications. It operates at a center frequency of 1575.42 MHz with a bandwidth of 40 MHz and an insertion loss of 0.9 dB. The component features a 50 Ohm impedance and is housed in a compact 5-SMD, no lead package measuring 1.45mm x 1.15mm x 0.70mm. It supports board mounting and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Surface acoustic wave technology for precise RF signal filtering
• Optimized for GPS L1 band frequency reception
• Compact surface-mount design for space-constrained PCB layouts

Applications

• GPS receiver front-end modules
• GNSS navigation systems
• Satellite positioning devices

Procurement Notes

Verify current availability status as the component lifecycle is listed as discontinued or end-of-life by major distributors. Confirm RoHS compliance details through official documentation before integration. Check for valid substitute part numbers if original supply is unavailable. Ensure compatibility with existing PCB footprints and reflow soldering profiles.

Selection Notes

Select this component for designs requiring low insertion loss and narrow bandwidth filtering at 1575.42 MHz. The 5-SMD package suits automated assembly processes. Consider thermal performance within the specified -40°C to +85°C operating range. Verify impedance matching requirements against system specifications.

Part Context

This part belongs to the Murata SF series of SAW filters, specifically engineered for global positioning system applications. It serves as a critical component for isolating desired signals from out-of-band interference in RF front-end circuits.

Replacement Considerations

Public confirmed substitute part number: RO3101E-11.