SF2173E

Overview

The SF2173E is a Surface Acoustic Wave (SAW) bandpass filter manufactured by RFMi. It operates at a center frequency of 2350 MHz with a bandwidth of 100 MHz, covering the range from 2300 to 2400 MHz. The device features a typical insertion loss of 3 dB and provides high attenuation, specified as 40 dB at 2250 MHz and 38 dB at 2450 MHz. It supports a maximum voltage rating of 3 V and utilizes a surface-mount technology package measuring 3.0 mm by 3.0 mm with a height of 1.25 mm.

Feature Summary

• Utilizes Surface Acoustic Wave (SAW) technology for signal filtering
• Designed as a bandpass filter for specific RF frequency ranges
• Constructed in a compact surface-mount package suitable for automated assembly

Applications

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

Procurement Notes

Verify the specific manufacturing date code and lot traceability upon order confirmation. Ensure that the procurement channel provides original manufacturer documentation to confirm authenticity. Check for any specific handling requirements related to electrostatic discharge protection during storage and transportation. Confirm package integrity before installation to prevent mechanical damage to the ceramic substrate.

Selection Notes

Select this component when a narrow bandpass characteristic centered at 2350 MHz is required. The 100 MHz bandwidth suits applications needing precise frequency selection within the ISM band. Consider the 3 V voltage rating for low-power circuit integration. The SMT footprint allows for space-constrained designs. Evaluate thermal performance against the specified soldering profile limits to ensure reliability.

Part Context

This part belongs to the RFMi SAW filter family, which specializes in passive RF components for wireless applications. The SF series typically addresses specific frequency bands for global connectivity standards. RFMi Integrated focuses on miniaturized solutions for consumer electronics and telecommunications infrastructure, providing reliable signal integrity through advanced acoustic wave technologies.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-referencing requires matching the exact electrical specifications, including the 2350 MHz center frequency, 100 MHz bandwidth, and 3.0x3.0x1.25 mm package dimensions. Verify compatibility with existing PCB layouts and impedance matching networks before substitution.