SF2141B

Overview

The Murata Electronics SF2141B is a Surface Acoustic Wave (SAW) bandpass filter designed for signal conditioning applications. It operates at a center frequency of 210.38 MHz with a bandwidth of 600 kHz, as documented in official Murata datasheets. The component supports a maximum voltage rating of 3 V and exhibits an insertion loss of 8.2 dB. It utilizes a 10-SMD, No Lead package configuration, specifically the SMP-03-10 footprint, suitable for board mount installation. The device is classified under the SF series and functions as a specialized RF SAW filter.

Feature Summary

• Surface Acoustic Wave technology for precise signal filtering
• Bandpass filter architecture optimized for intermediate frequency applications
• Compact surface-mount design for automated assembly integration

Applications

• Intermediate frequency stages in communication systems
• RF signal conditioning circuits
• Bandpass filtering in wireless infrastructure

Procurement Notes

Verify current availability status as the SF2141B is listed as obsolete by Murata Electronics. Confirm compatibility with alternative sources such as RFMi if original manufacturing supply is discontinued. Ensure that any substitute components meet the specific electrical requirements of the target application before procurement.

Selection Notes

Select this component for designs requiring a 210.38 MHz center frequency with a 600 kHz bandwidth. Consider the 3 V voltage rating and 8.2 dB insertion loss when designing the signal chain. The SMP-03-10 package must be accommodated within the PCB layout constraints. Verify thermal performance against the specified operating temperature range during selection.

Part Context

The SF2141B belongs to Murata's SF series of SAW filters, which are engineered for high-performance signal conditioning. This specific model targets the 210 MHz frequency range, distinguishing it from other variants like the SF2190B which operates at 138 MHz. The series is characterized by its use in specialized RF applications requiring stable bandpass characteristics.

Replacement Considerations

Official documentation lists the SF2190B as an alias or related part number for the SF2190B series, but it operates at a different frequency (138 MHz). Direct substitution requires verifying frequency alignment. Check for equivalent offerings from manufacturers like RFMi if Murata supply is exhausted.