B39431B3721U410

Overview

The B39431B3721U410 is a Surface Acoustic Wave (SAW) filter manufactured by Qualcomm RF360, designed for signal conditioning in remote control applications. It operates at a center frequency of 433.92 MHz with a bandwidth of 1.6 MHz and an insertion loss of 2.6 dB. The component features a 50 Ohm impedance and a maximum voltage rating of 6 V. It is housed in a compact 6-SMD, No Lead package measuring 3 mm x 3 mm. The device supports surface mount installation and functions within a temperature range of -45°C to +125°C.

Feature Summary

• Surface Acoustic Wave technology for precise RF signal filtering
• Optimized for SRD and ISM band operations at 433.92 MHz
• Compact 3 mm x 3 mm footprint for space-constrained designs
• High thermal stability suitable for industrial environments

Applications

• Remote control systems
• SRD (Short Range Devices) equipment
• ISM band communication modules

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status before integration, as manufacturing updates may occur. Confirm that the 6-SMD package dimensions align with your PCB footprint requirements. Ensure supply chain sources are authorized distributors to guarantee component authenticity and traceability for production batches.

Selection Notes

Select this component when a narrow 1.6 MHz bandwidth is required at 433.92 MHz for remote control signals. The low profile and small package size make it suitable for dense circuit layouts. Consider the 2.6 dB insertion loss impact on system sensitivity during link budget calculations compared to alternative SAW filters with lower loss characteristics.

Part Context

This part belongs to the B39431 series of RF front-end filters from Qualcomm. These components are engineered for high-performance signal conditioning in wireless transmission devices. The series offers various configurations tailored for different frequency bands and package sizes, supporting diverse IoT and remote control standards globally.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific model were not identified in the provided documentation.