SF2120C

Overview

The SF2120C is a Surface Acoustic Wave (SAW) filter manufactured by Murata Electronics, designed for signal conditioning in RF applications. It operates at a center frequency of 149 MHz with a bandwidth of 2 MHz. The device features an insertion loss of 2 dB and provides attenuation ratings of 30 dB and 54 dB. It utilizes a ceramic SM5050-8 package with dimensions of 5.2 mm x 5.2 mm x 1.7 mm. The component supports surface mount installation and functions within a temperature range of -40 °C to +85 °C. It has 50 Ohm input and output impedance.

Feature Summary

• Surface Acoustic Wave technology for precise RF signal filtering
• Optimized for Orbcom TX RF applications
• RoHS compliant construction

Applications

• Orbcom Transmitter RF stages
• WiMAX RF front-end filtering
• Signal conditioning circuits requiring 149 MHz selectivity

Procurement Notes

Verify the specific manufacturer designation as sources list both RF Monolithics and Murata. Confirm RoHS compliance status through official documentation. Check product status as some listings indicate obsolete status. Ensure package compatibility with SM5050-8 footprint requirements during integration planning.

Selection Notes

Select this component for designs requiring a 149 MHz SAW filter with low insertion loss. Verify thermal operating limits against system constraints. Ensure impedance matching aligns with 50 Ohm system requirements. Consider package dimensions for PCB layout space allocation.

Part Context

This part belongs to the category of RF SAW filters used in wireless communication systems. It serves as a bandpass filter to isolate specific frequency bands. Murata Electronics produces variants for various RF standards. The SM5050-8 package is common for compact RF modules.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data.