2STN1550 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 50 V
• Collector-Base Voltage, max: 50 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 5 A
• Collector Dissipation: 1.6 W
• DC Current Gain (h_fe): 190
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: SOT-223

Here is an image showing the pin diagram of this transistor.The 2STN1550 transistor is marked as "N1550".The complementary PNP transistor to the 2STN1550 is the 2STN2550.