SF2049E

Overview

The Murata Electronics SF2049E is a Surface Acoustic Wave (SAW) filter designed for the 915 MHz Industrial, Scientific, and Medical (ISM) band. It operates with a center frequency of 915.00 MHz and features a nominal impedance of 50 ohms. The component exhibits a typical insertion loss of 2.2 dB and maintains a bandwidth of 26 MHz. It is housed in a compact 6-SMD, no-lead package suitable for surface mount technology. The device supports a maximum power capacity of 1W and functions reliably within an operating temperature range from -40°C to +85°C.

Feature Summary

• Engineered as a SAW filter for precise signal conditioning in the 915 MHz ISM band
• Provides stable performance with low insertion loss and defined bandwidth characteristics
• Constructed in a small form factor SMD package for efficient board space utilization

Applications

• Industrial, Scientific, and Medical (ISM) band RF applications
• Wireless sensor networks operating at 915 MHz
• RFID reader systems utilizing the 915 MHz frequency range

Procurement Notes

Verify the specific ordering suffix when sourcing components, as variants such as SF2049E-1 may exist with identical electrical specifications but different packaging or reel configurations. Confirm that the received parts match the required 6-SMD package type and ensure compatibility with your assembly equipment. Always cross-reference the manufacturer's latest datasheet to validate current production status and availability before finalizing procurement plans.

Selection Notes

Select this component for designs requiring a dedicated bandpass filter centered at 915 MHz with moderate selectivity. The 50-ohm impedance ensures direct integration into standard RF transmission lines without additional matching networks. Consider the thermal rating of -40°C to +85°C when evaluating environmental constraints. The low insertion loss of 2.2 dB helps maintain signal integrity in sensitive receiver chains.

Part Context

This component belongs to Murata's lineup of SAW filters tailored for ISM band communications. It serves as a critical passive element for filtering out-of-band noise in wireless transceivers. The design prioritizes size reduction and cost-effectiveness while maintaining robust RF performance metrics essential for reliable short-range wireless data transmission.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with any alternative devices by comparing center frequency, bandwidth, insertion loss, and package dimensions against the original SF2049E specifications.