SF1141B

Overview

The Murata SF1141B is a Surface Acoustic Wave (SAW) filter designed for signal conditioning applications. It operates at a center frequency of 75 MHz and is specifically engineered for SDARS IF processing. The component features a bandwidth of 7.43 MHz and an impedance of 250 Ohms. It utilizes SMD/SMT termination styles and is available in package configurations such as SMP-03 or SMD7050-12P. The device supports operating temperatures ranging from -40°C to +85°C and holds AEC-Q200 qualification.

Feature Summary

• Surface Acoustic Wave technology for precise signal filtering
• Optimized for SDARS intermediate frequency applications
• AEC-Q200 qualified for automotive reliability standards

Applications

• SDARS receiver intermediate frequency stages
• Automotive satellite radio systems
• Signal conditioning circuits requiring 75 MHz filtering

Procurement Notes

Verify the specific package variant, as sources indicate SMP-03 and SMD7050-12P configurations. Confirm AEC-Q200 compliance requirements against project specifications. Ensure the 250 Ohm impedance matches system design constraints. Check datasheet revisions for updated mechanical dimensions.

Selection Notes

Select this component when a 75 MHz SAW filter is required for SDARS applications. The 250 Ohm impedance is critical for matching source and load networks. Consider the operating temperature range of -40°C to +85°C for environmental suitability. Verify physical footprint compatibility with PCB layout constraints.

Part Context

This part belongs to Murata's SAW filter portfolio, which provides compact solutions for RF signal conditioning. The SF series targets specific frequency bands for communication systems. The 75 MHz designation places it in the intermediate frequency range for certain broadcast reception architectures.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Murata engineering for direct replacements if discontinuation occurs.