SF2159E

Overview

The RFMi SF2159E is a Surface Acoustic Wave (SAW) bandpass filter designed for signal conditioning applications. It operates with a center frequency of 974 MHz and provides a bandwidth ranging from 954 MHz to 994 MHz. The component features a nominal impedance of 150 Ohms and exhibits an insertion loss of 3.1 dB. It is housed in an SM3030-8 surface-mount package, suitable for board mounting. The device is rated for operation within a temperature range of -40°C to +85°C and supports a voltage rating of 3 V.

Feature Summary

• Surface Acoustic Wave technology for precise frequency filtering
• Compact SM3030-8 surface-mount package design
• Optimized for low insertion loss performance
• Robust construction for automotive and harsh environments

Applications

• TV RF signal processing
• Automotive electronics systems
• General-purpose RF signal conditioning

Procurement Notes

Verify the specific datasheet version and RoHS compliance status directly with the manufacturer or authorized distributor before procurement. Confirm that the SM3030-8 package dimensions align with your PCB footprint requirements. Ensure the 150 Ohm impedance matches your system interface specifications. Check for any recent manufacturing changes that may affect electrical characteristics or lead availability.

Selection Notes

Select this component when a 974 MHz center frequency with a 50 MHz bandwidth is required. The 150 Ohm impedance makes it suitable for specific RF interfaces distinct from standard 50 Ohm systems. Consider the SM3030-8 package size for space-constrained designs. Verify thermal stability requirements against the -40°C to +85°C operating range.

Part Context

The SF2159E belongs to the SF series of SAW filters manufactured by RFMi. This series focuses on providing high-precision frequency filtering solutions for various electronic applications. The component utilizes surface mount technology to facilitate automated assembly and reduce footprint area in modern circuit designs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer for direct replacements or cross-reference compatible SAW filters with identical 974 MHz center frequency and 150 Ohm impedance specifications.