SMBT3906UE6327HTSA1

Overview

The SMBT3906UE6327HTSA1 is a PNP silicon switching transistor from Infineon Technologies, housed in the SC74 (SOT363) surface-mount package. It features two galvanically isolated internal transistors with good matching characteristics within a single compact footprint. The device supports a maximum collector-emitter voltage of 40 V and a continuous collector current of 200 mA. Total power dissipation is rated at 330 mW under standard conditions. Key electrical parameters include a DC current gain ranging from 30 to 300, a transition frequency of 250 MHz, and a junction temperature limit of 150 °C.

Feature Summary

• Galvanic isolation between two internal transistors ensures independent operation without electrical interference.
• High DC current gain provides reliable amplification across a wide range of collector currents.
• Low collector-emitter saturation voltage minimizes power loss during switching operations.
• Qualified according to AEC-Q101 standards for automotive reliability requirements.

Applications

• General-purpose signal switching and logic interface circuits
• Automotive electronics requiring qualified components
• Complementary pairing with NPN types like SMBT3904

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm the SC74 package configuration. Ensure that the component meets the required AEC-Q101 qualification status if deployed in automotive systems. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when dual isolated PNP switching functionality is required in a minimal footprint. Compare thermal resistance values against the expected ambient temperature and power dissipation limits. Consider the complementary SMBT3904 series for matched NPN/PNP applications in push-pull or differential configurations.

Part Context

This component belongs to the SMBT3906 series of PNP silicon switching transistors manufactured by Infineon Technologies. The 'U' designation specifically identifies the SC74 (SOT363) package variant, which contains two isolated transistors. This series is designed for high-speed switching applications and offers robust performance in compact electronic designs.

Replacement Considerations

Direct replacements include other Infineon SMBT3906 variants in different packages, such as SMBT3906E6327HTSA1 (SOT-23). Verify pinout compatibility and thermal characteristics when substituting with equivalent parts from other manufacturers.

FAQ

What is the difference between SMBT3906 and SMBT3906U?

The SMBT3906U specifically denotes the version packaged in the SC74 (SOT363) format, which houses two galvanically isolated transistors in a six-pin package, whereas the base SMBT3906 typically refers to the SOT-23 single-transistor configuration.

Is the SMBT3906U qualified for automotive applications?

Yes, the SMBT3906 series, including the U variant, is qualified according to the AEC-Q101 standard, making it suitable for automotive electronics environments.

What is the maximum total power dissipation for the SC74 package?

For the SMBT3906U in the SC74 package, the maximum total power dissipation is 330 mW at a case temperature of 71°C or lower.