SF1219K

Overview

The RFMi SF1219K is a Surface Acoustic Wave (SAW) filter designed for signal conditioning applications. It operates within a frequency range of 2.3325 GHz to 2.345 GHz, with a center frequency of 2.33875 GHz and a bandwidth of 12.5 MHz. The component supports voltage ratings of 3 V and offers impedance options of 50 Ohms or 100 Ohms. It features an insertion loss of 2.6 dB and is packaged in a 5-SMD surface-mount configuration.

Feature Summary

• Utilizes Surface Acoustic Wave technology for precise signal filtering
• Optimized for high-frequency operation around 2.33875 GHz
• Available in compact 5-SMD surface-mount package

Applications

• Wireless communication systems requiring 2.3-2.4 GHz band filtering
• RF front-end modules for mobile devices
• Signal conditioning in broadband infrastructure equipment

Procurement Notes

Verify the specific impedance requirement (50 Ohms or 100 Ohms) against your circuit design before ordering, as this parameter varies by variant. Confirm the package type matches your PCB footprint specifications. Ensure the supplier provides official datasheets to validate the center frequency and bandwidth tolerances for your application's compliance needs.

Selection Notes

Select this component when a SAW filter is required for the 2.33875 GHz range with low insertion loss. Consider the available impedance options (50 or 100 Ohms) to match system requirements. The 5-SMD package suits space-constrained designs. Verify that the 3 V rating aligns with your operating conditions.

Part Context

The SF1219K belongs to the RFMi family of Surface Acoustic Wave filters. These components are engineered for high-performance RF signal processing. The series typically includes various models tailored for different frequency bands and impedance configurations, supporting diverse wireless communication standards.

Replacement Considerations

Check for direct substitutes from RFMi or other manufacturers offering SAW filters at 2.33875 GHz. Ensure replacement parts match the 5-SMD package and specified impedance (50/100 Ohms). Verify equivalent insertion loss and bandwidth characteristics to maintain system performance.