B39921B3728U410

Overview

The B39921B3728U410 is a Surface Acoustic Wave (SAW) filter manufactured by Qualcomm Technologies, designed for RF front-end applications. It operates at a center frequency of 915MHz with a bandwidth of 26MHz and insertion loss of 2.2dB. The component is housed in a compact 6-SMD, no-lead package measuring 3.00mm x 3.00mm x 1.10mm maximum height. It meets AEC-Q200 qualification standards and complies with RoHS3 specifications. This discrete filter supports remote control systems requiring reliable signal filtering in small form factor designs.

Feature Summary

• Utilizes Surface Acoustic Wave technology for efficient RF signal processing
• Qualified under AEC-Q200 automotive reliability standards
• Designed for low-loss performance in compact surface-mount packages

Applications

• Remote control systems
• RF front-end modules
• Industrial IoT devices

Procurement Notes

Verify the specific datasheet version to confirm exact electrical parameters, as specifications may vary between revisions. Confirm that the 6-SMD package dimensions align with your PCB footprint requirements. Ensure compatibility with your assembly process regarding moisture sensitivity level and reflow profiles. Check for any recent product change notices that might affect material composition or manufacturing location. Validate that the AEC-Q200 qualification meets your system's reliability standards.

Selection Notes

Select this component when a 915MHz SAW filter is required for remote control or similar ISM band applications. Consider its 2.2dB insertion loss and 26MHz bandwidth against system link budget requirements. Evaluate the 6-SMD package size for space-constrained designs. Compare against alternative filters if different bandwidth or loss characteristics are needed. Ensure the manufacturer's supply chain stability meets production volume needs.

Part Context

This part belongs to Qualcomm's extensive portfolio of RF front-end filters, which includes ultraBAW, ultraSAW, and TC-SAW technologies. These solutions target 5G/4G, Wi-Fi, GNSS, and IoT connectivity challenges. The B39921 series specifically addresses discrete filtering needs for multimode and multiband devices, supporting energy-efficient designs in consumer and industrial sectors.

Replacement Considerations

The B39921B3726U410 is listed as a similar replacement option. Verify electrical parameter equivalence before substitution. Ensure mechanical footprint compatibility for direct board replacement. Review any functional differences in bandwidth or insertion loss that might impact system performance.