SF2321D

Overview

The SF2321D is a general-purpose Surface Acoustic Wave (SAW) bandpass filter manufactured by RFMi. It operates at a center frequency of 1.09 GHz with a bandwidth of 30 MHz. The device exhibits an insertion loss of 2.4 dB and is housed in a compact 6-SMD, no-lead package. Designed for RF signal conditioning, it supports standard surface-mount assembly processes, including reflow soldering at peak temperatures up to 260°C.

Feature Summary

• Surface Acoustic Wave technology for efficient RF filtering
• Bandpass configuration centered at 1.09 GHz
• Compact 6-SMD no-lead footprint for space-constrained designs

Applications

• General purpose RF signal conditioning
• Wireless communication systems requiring 1.09 GHz filtering
• RF front-end modules

Procurement Notes

Verify the manufacturer designation carefully, as some distributors may list this part under Murata Electronics due to corporate acquisitions or portfolio transfers. Confirm RoHS compliance status and specific packaging quantities directly with the supplier before ordering. Ensure the component matches the 6-SMD no-lead package specification required for your PCB layout.

Selection Notes

Select this component when a SAW filter is required for the 1.09 GHz frequency range with moderate bandwidth requirements. The 2.4 dB insertion loss is suitable for general applications where minimal signal attenuation is acceptable. Consider the 6-SMD package size during PCB design to ensure adequate clearance and thermal management capabilities.

Part Context

This component belongs to the RFMi SAW filter family, which provides ceramic-based solutions for various wireless standards. RFMi specializes in high-performance filters for WiFi, GPS, and LTE bands. The SF2321D represents a standard offering for specific frequency applications within their broad portfolio of RF passive components.

Replacement Considerations

Cross-reference with other 1.09 GHz SAW filters from manufacturers like Murata or Akoustis if supply constraints exist. Verify that replacement parts maintain identical center frequency, bandwidth, and insertion loss specifications to ensure circuit performance consistency.