SS8550 Y2 PNP Transistor SOT-23

The SS8550 Y2 PNP SOT-23 Transistor is a compact, high-current PNP bipolar junction transistor (BJT) designed for switching, amplification, driver circuits, and general-purpose electronic applications. It comes in the space-saving SOT-23 SMD package and is commonly identified by the Y2 marking on the transistor body.

With a maximum collector-emitter voltage of 25V and continuous collector current up to 1.5A, the SS8550 is useful for a wide range of low-voltage electronic circuits. Its complementary transistor is commonly specified as SS8050, making the pair useful for push-pull, switching, and amplifier designs.

The standard SOT-23 configuration is Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector (BEC). The device marking Y2 is used for SS8550 variants, although exact electrical characteristics and gain classifications can vary between manufacturers, so the supplier datasheet should be checked for a specific batch.

This transistor is a practical choice for Arduino projects, ESP32 and microcontroller circuits, LED drivers, relay drivers, sensor interfaces, audio and signal circuits, power control, robotics, DIY electronics, PCB repair, and student engineering projects.

Features:

• Part Number: SS8550
• Transistor Type: PNP BJT
• SMD Package: SOT-23
• Body Marking: Y2
• Collector-Emitter Voltage: -25V
• Collector-Base Voltage: -40V
• Collector Current: -1.5A maximum
• Power Dissipation: approximately 300mW, depending on manufacturer
• Junction Temperature: up to 150°C
• Complementary Transistor: SS8050
• Mounting Type: Surface Mount Device, SMD
• Suitable for: Switching and amplification applications

Specifications: