SF2002B-2

Overview

The RFMi SF2002B-2 is a Surface Acoustic Wave (SAW) filter designed for signal conditioning in cellular and GSM applications. It operates at a center frequency of 942.5 MHz with a bandwidth of 35 MHz, covering the range from 925 to 960 MHz. The component features a 50 Ohm impedance and supports a voltage rating of 3 V. It utilizes an SM-3030-6 surface-mount package with no lead construction. Key electrical specifications include an insertion loss of 4.0 dB, ensuring efficient signal transmission within its designated frequency band.

Feature Summary

• Surface Acoustic Wave technology for precise RF filtering
• Optimized for GSM and cellular communication bands
• Compact surface-mount design for board integration

Applications

• GSM mobile phone front-end modules
• Cellular device signal conditioning
• RF transceiver input/output filtering

Procurement Notes

Verify the manufacturer designation, as some distributors list this part under Akoustis due to corporate acquisitions. Confirm the specific suffix B-2 matches the required 4.0 dB insertion loss specification rather than alternative variants. Ensure the SM-3030-6 package footprint aligns with your PCB layout requirements before finalizing procurement orders.

Selection Notes

Select this component when a narrowband SAW filter is required for the 925-960 MHz range. The 35 MHz bandwidth suits standard GSM channel spacing. Consider the 3 V voltage rating for low-power mobile applications. The 6-pin SMD package facilitates automated assembly in compact consumer electronics designs requiring minimal profile.

Part Context

This part belongs to the SF series of SAW filters from RFMi, specialized for wireless communication systems. It serves as a critical passive component for isolating desired frequencies in mobile handsets. The series is characterized by high selectivity and low insertion loss, supporting reliable connectivity in global GSM networks.

Replacement Considerations

The SF2002E is a documented variant within the same family, offering similar 942.5 MHz center frequency and 35 MHz bandwidth characteristics. Verify pin compatibility and exact insertion loss tolerances before substituting.