STC03DE150

Overview

The STC03DE150 is a hybrid Emitter Switched Bipolar Transistor (ESBT) manufactured by STMicroelectronics. It integrates high-voltage bipolar and low-voltage MOSFET technologies to optimize performance in the ESBT topology. The device features a collector-source voltage of 1500 V, a continuous collector current of 3 A, and an on-state resistance of 0.55 W. Designed for auxiliary flyback SMPS applications in three-phase systems, it supports switching frequencies up to 150 kHz with fast storage time and fall times.

Feature Summary

• Hybrid structure combining dedicated high-voltage bipolar and low-voltage MOSFET technologies
• Squared Reverse Biased Safe Operating Area (RBSOA) supporting up to 1500 V
• Very low input capacitance driven by a gate resistor of 4.7 W

Applications

• Auxiliary switch-mode power supplies (SMPS) for three-phase mains
• Auxiliary flyback converters for three-phase applications

Procurement Notes

Verify component status as the datasheet indicates this product is obsolete. Confirm availability through authorized distributors or secondary markets. Ensure the TO-247-4L package matches the design requirements. Check for RoHS compliance and environmental export classifications before procurement.

Selection Notes

Select this component for designs requiring high-voltage isolation and fast switching in auxiliary power stages. The integrated ESBT topology simplifies drive circuitry compared to discrete solutions. Consider thermal management due to the 100 W total dissipation rating at 25 °C case temperature. Verify compatibility with the required 1500 V blocking capability.

Part Context

This device belongs to the STC03D series of ESBT transistors from STMicroelectronics. It is part of a family designed for industrial power conversion, specifically targeting auxiliary power supplies where efficiency and switching speed are critical. The TO-247-4L package provides robust mechanical stability for through-hole mounting.

Replacement Considerations

Public confirmed substitute part numbers: STC03DE170, STC05DE150, STC08DE150.