2STN1550

Single Bipolar Transistors Overview

The 2STN1550 is a low voltage high performance NPN power transistor manufactured using PB-HCD technology. It features very low collector-emitter saturation voltage, high current gain, and fast switching speed. The device is housed in a medium power SOT-223 surface mounting package. Absolute maximum ratings include a collector-emitter voltage of 50 V, a continuous collector current of 5 A, and a peak collector current of 10 A. Total dissipation at 25 °C is 1.6 W. Electrical characteristics specify a DC current gain ranging from 95 to 400 depending on operating conditions, with a typical collector-emitter saturation voltage of 0.45 V at IC = 3 A.

Single Bipolar Transistors Feature Summary

• Very low collector-emitter saturation voltage
• High current gain characteristic
• Fast switching speed

Single Bipolar Transistors Applications

• Emergency lighting
• LED
• Motherboard and hard disk drive
• Mobile equipment
• Battery charger
• Voltage regulation

Single Bipolar Transistors Procurement Notes

Verify the specific datasheet revision against the manufacturer's official records before finalizing design specifications. Confirm that the SOT-223 package dimensions align with the target PCB footprint requirements. Ensure thermal management strategies account for the specified junction-to-ambient thermal resistance values under actual operating conditions. Check for any updates regarding environmental compliance or packaging changes.

Single Bipolar Transistors Selection Notes

Select this component when designing circuits requiring efficient power switching with minimal conduction losses. The high current gain simplifies base drive requirements compared to standard transistors. Consider the SOT-223 package for applications needing robust surface-mount integration. Evaluate thermal constraints carefully, as total dissipation is limited. This device suits low-voltage applications where fast turn-on and turn-off times are critical for system efficiency.

Single Bipolar Transistors Part Context

The 2STN1550 belongs to STMicroelectronics' family of low voltage high performance NPN power transistors. It utilizes PB-HCD (Power bipolar high current density) technology to achieve exceptional gain and low saturation voltage. The complementary PNP version is the 2STR1550. These devices are designed for general-purpose power switching applications in consumer electronics and industrial control systems.

Single Bipolar Transistors Replacement Considerations

The 2STF1550 serves as a functional equivalent but utilizes a SOT-89 package instead of SOT-223. Verify pinout compatibility and physical footprint differences before substitution. No other direct cross-references are documented in the provided source material.