B39431B3750U310

Overview

The B39431B3750U310 is an obsolete Surface Acoustic Wave (SAW) filter manufactured by Qualcomm. It operates at a center frequency of 433.92MHz with a bandwidth of 120kHz and insertion loss of 2dB. The component utilizes an 8-SMD, no-lead package measuring 5.00mm x 5.00mm x 1.35mm. Designed for remote control applications, it complies with RoHS3 standards and has a Moisture Sensitivity Level (MSL) of 1.

Feature Summary

• Surface Acoustic Wave technology for RF signal filtering
• Optimized for remote control application environments
• Compact surface-mount packaging design

Applications

• Remote control systems

Procurement Notes

This component is officially marked as obsolete and no longer in production. Verification of availability requires checking distributor inventory for remaining stock or identifying qualified replacement parts. Sourcing should focus on verified surplus channels or direct manufacturer confirmation regarding end-of-life status before integration into new designs.

Selection Notes

Designers must account for the discontinued status when selecting this part. Alternative components within the same family or compatible SAW filters should be evaluated for long-term supply stability. Ensure that any substitute maintains the required 433.92MHz center frequency and 8-SMD footprint to preserve circuit board layout integrity.

Part Context

Part of the B39431 series from Qualcomm's RF front-end portfolio. This series includes various SAW filters for different frequencies and packages. The B39431B3750U310 specifically targets the 433.92MHz band using an 8-pin SMD configuration, distinct from other series members like the 4-SMD or 6-SMD variants.

Replacement Considerations

B39431B3743H110 is listed as a similar alternative by distributors.