SF2183E

Overview

The RFMi SF2183E is a Surface Acoustic Wave (SAW) filter designed for signal conditioning applications. It operates at a center frequency of 400 MHz with a bandwidth ranging from 399.875 MHz to 400.125 MHz. The component features a rated voltage of 6 V and an impedance of either 50 Ohms or 865 Ohms depending on the specific variant configuration. It utilizes a 6-SMD, No Lead surface mount package for board mounting. The device exhibits a typical insertion loss of 3 dB and is suitable for general-purpose RF filtering tasks within its specified frequency range.

Feature Summary

• Surface Acoustic Wave technology for precise signal filtering
• Compact 6-SMD no-lead surface mount package design
• General-purpose RF signal conditioning capability

Applications

• General purpose RF signal filtering
• Signal conditioning circuits
• RF front-end modules

Procurement Notes

Verify the specific impedance value required for your circuit design, as documentation indicates variations between 50 Ohms and 865 Ohms for this part number. Confirm the exact package dimensions and pinout compatibility with your PCB layout before finalizing orders. Ensure that the operating voltage rating of 6 V aligns with your system power supply constraints to prevent component damage during operation.

Selection Notes

Select this component when a narrow bandpass filter centered at 400 MHz is required for general RF applications. Consider the specific impedance requirement, as conflicting data exists regarding 50 Ohm versus 865 Ohm implementations. Evaluate the thermal performance against the standard operating temperature ranges typical for SAW filters in this series. Ensure the SMD footprint matches the available land pattern in your design.

Part Context

This component belongs to the RFMi SF series of SAW filters, which are engineered for reliable signal processing in radio frequency environments. The series typically offers low insertion loss and stable performance across varying environmental conditions. These filters are commonly integrated into communication systems requiring specific frequency isolation and noise reduction capabilities.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify electrical compatibility carefully if considering alternative manufacturers, particularly regarding the impedance discrepancy found in documentation.