SF2177E

Overview

The RFMi SF2177E is a low-loss UHF SAW filter designed for signal conditioning applications. It operates within a frequency range of 1.452 GHz to 1.492 GHz, centered at 1.472 GHz. The component features a bandwidth of 40 MHz and an insertion loss of 3.2 dB. It supports impedances of 50 Ohms and 100 Ohms with a voltage rating of 3 V. Packaged in an SM3030-8 SMD/SMT form factor, it functions between -40°C and +85°C.

Feature Summary

• Surface Acoustic Wave (SAW) technology for efficient signal filtering
• Low insertion loss characteristics for minimal signal degradation
• Dual impedance support for flexible circuit integration

Applications

• UHF band signal conditioning
• General purpose RF filtering
• Wireless communication systems operating near 1.472 GHz

Procurement Notes

Verify the specific suffix variant required, as sources indicate SF2177E-1 exists with similar parameters but potentially different packaging or qualification status such as AEC-Q200. Confirm the exact package type, as some listings reference SM3030-6 while others specify SM3030-8. Ensure compatibility with the target board layout before ordering.

Selection Notes

Select this component when a narrow 40 MHz bandwidth is required around 1.472 GHz. The 3.2 dB insertion loss makes it suitable for applications where signal integrity is critical. Verify that the 3 V voltage rating meets the system requirements and that the SMD package fits the available PCB space.

Part Context

This part belongs to the RFMi SF series of SAW filters. These components are engineered for high-performance RF applications requiring precise frequency selection. The series typically offers compact footprints and reliable performance in consumer and industrial electronics.

Replacement Considerations

SF2177E-1 is a documented variant with identical center frequency and bandwidth. Verify if the -1 suffix implies a specific automotive qualification or packaging difference before substitution.