PMBT3904YS-QX

Overview

The PMBT3904YS-QX is an NPN/NPN general-purpose double transistor manufactured by Nexperia. It integrates two independent NPN transistors within a single SOT363-3 (SC-88) plastic surface-mounted device package. The component supports a collector-emitter voltage of 40 V and a continuous collector current of 200 mA per transistor. Key electrical characteristics include a DC current gain ranging from 100 to 300 at 10 mA, and a transition frequency up to 300 MHz. The device is qualified according to AEC-Q101 standards for automotive applications.

Feature Summary

• Integrates two NPN transistors in a compact SOT363-3 package for board-space reduction
• Qualified according to AEC-Q101 for automotive reliability
• Supports general-purpose switching and amplification tasks

Applications

• General-purpose switching circuits
• Signal amplification stages
• Automotive electronic systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging details such as reel size or tape-and-reel specifications. Ensure that the procurement channel provides valid traceability and authenticity guarantees for automotive-grade components. Cross-reference the marking code BC% with manufacturing site codes to validate production origin before finalizing orders.

Selection Notes

Select this component when dual NPN functionality is required in a minimal footprint. The SOT363-3 package offers significant space savings compared to discrete single transistors. Consider the 40 V rating and 200 mA current capability for low-power switching applications. Verify thermal management requirements based on the specified junction-to-ambient resistance values for the target PCB layout.

Part Context

This part belongs to Nexperia's portfolio of general-purpose double transistors designed for high-density circuit designs. The PMBT3904YS-Q variant specifically targets automotive markets through its AEC-Q101 qualification. It serves as a complementary solution to other double transistor families, providing integrated NPN pairs for efficient signal processing and control logic in constrained spaces.

Replacement Considerations

Direct replacements must match the NPN/NPN configuration, SOT363-3 package, and AEC-Q101 qualification. Verify pinout compatibility and electrical parameters such as VCEO and IC limits. Consult official substitution lists for equivalent parts from Nexperia or other manufacturers ensuring identical functional and mechanical specifications.