SF2259H

Overview

The SF2259H is a Surface Acoustic Wave (SAW) bandpass filter manufactured by RFMi. It operates at a center frequency of 921.5 MHz with a bandwidth of 13 MHz, covering the 915 MHz to 928 MHz range. The component features a 50-ohm impedance and supports a maximum voltage rating of 3 V. It is housed in an SM-2016-4 surface-mount package with dimensions of 2.00 mm x 1.60 mm x 0.75 mm. The device functions within a temperature range of -40°C to +85°C.

Feature Summary

• Surface Acoustic Wave technology for signal conditioning
• Designed for ISM band applications around 921.5 MHz
• Compact SMD/SMT package suitable for automated assembly

Applications

• Industrial, Scientific, and Medical (ISM) equipment operating in the 902-928 MHz band
• Wireless sensor networks requiring narrowband filtering
• Low-power remote keyless entry systems

Procurement Notes

Verify the specific suffix or revision code against the manufacturer's latest datasheet to ensure compatibility with current RoHS directives and lead-free soldering profiles. Confirm that the SM-2016-4 package dimensions align with your PCB footprint design rules before finalizing procurement orders.

Selection Notes

Select this component when a fixed center frequency of 921.5 MHz and a 13 MHz bandwidth are required for ISM band applications. Ensure the system voltage does not exceed 3 V and that the operating environment remains within the specified -40°C to +85°C range. Verify impedance matching requirements for 50-ohm systems.

Part Context

The SF2259H belongs to the SF series of SAW filters from RFMi, an Akoustis brand. This series utilizes Surface Acoustic Wave technology to provide reliable signal conditioning for wireless communication devices. The component is designed to meet the stringent size and performance demands of modern compact electronic systems.

Replacement Considerations

Consult official substitution guides for equivalent SAW filters with identical 921.5 MHz center frequency and 13 MHz bandwidth. Verify pinout compatibility and package dimensions (SM-2016-4) before replacing with alternative manufacturers' components.

FAQ

What is the maximum operating temperature for the SF2259H?

The maximum operating temperature is +85°C.

Does the SF2259H support surface mount technology?

Yes, it uses an SM-2016-4 SMD/SMT package.