SF2137E-2

Overview

The SF2137E-2 is a steep roll-off Surface Acoustic Wave (SAW) filter manufactured by RFMi. It operates at a center frequency of 869 MHz with a bandwidth of 2 MHz, covering the 868 to 870 MHz range. The component features a 50 Ohm impedance and an insertion loss of 2.3 dB. It is rated for 5 V and functions within a temperature range of -40°C to +85°C. Packaged in an SM3030-6 surface-mount format, it is AEC-Q200 qualified.

Feature Summary

• Provides low insertion loss and excellent selectivity
• Requires no matching components for operation in a 50Ω environment
• Designed for unlicensed band applications

Applications

• Unlicensed band communication systems
• Automotive electronics requiring AEC-Q200 qualification
• Signal conditioning circuits

Procurement Notes

Verify the specific suffix and package variant against official RFMi documentation before procurement. Confirm that the AEC-Q200 rating aligns with automotive reliability requirements if applicable. Ensure the 50 Ohm impedance matches system design specifications. Check for any specific handling or storage instructions provided in the datasheet.

Selection Notes

Select this component when a steep roll-off SAW filter is required for the 868-870 MHz unlicensed band. It is suitable for designs needing minimal external matching networks due to its 50 Ohm compatibility. Consider the SM3030-6 package size for space-constrained PCB layouts. Verify thermal performance within the specified -40°C to +85°C operating range.

Part Context

The SF2137E-2 belongs to the SF series of signal conditioning products from RFMi. It is categorized as a bandpass filter within the broader filters subcategory. This part is distinct from similar models like the SF2137E-1, which may have different electrical characteristics or packaging options.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Consult RFMi technical support for direct replacements or cross-references.