S8550 2TY PNP 40V 500mA 300mW Transistor SOT-23

S8550 2TY PNP 40V 500mA 300mW Transistor is a general-purpose small signal PNP transistor housed in a compact SOT-23 surface-mount package. It is commonly used for amplification and switching applications in low-power electronic circuits. With moderate voltage and current ratings, it is ideal for portable devices, audio amplifiers, and embedded systems.

Key Features:

• PNP Junction Transistor: Suitable for general-purpose amplification and switching.
• Surface-Mount Package: SOT-23 form factor saves PCB space and supports automated assembly.
• Moderate Current Rating: Supports collector current up to 500mA.
• High DC Gain: Offers gain (hFE) between 100 to 300 for reliable signal amplification.
• Thermal Efficiency: Power dissipation rating of 300mW in a compact body.

Technical Specifications:

• Transistor Type: PNP
• Package: SOT-23 (2TY marking)
• Collector-Emitter Voltage (V_CEO): -40V
• Collector-Base Voltage (V_CBO): -50V
• Emitter-Base Voltage (V_EBO): -5V
• Collector Current (I_C): -500mA (max)
• Power Dissipation (P_D): 300mW
• DC Current Gain (h_FE): 100 to 300 at I_C = -100mA
• Transition Frequency: 100MHz (typical)

Mechanical Specifications:

• Package Type: SOT-23
• Marking Code: 2TY
• Pin Configuration: 1-Emitter, 2-Base, 3-Collector
• Body Material: Molded plastic with tinned leads

Mounting Options:

• Surface Mount: Designed for reflow soldering onto SMD pads.
• Compact PCB Footprint: Ideal for high-density board layouts.

Schematic Diagram, Connection, Wiring and Pinout:

• Pinout: Pin 1 – Emitter, Pin 2 – Base, Pin 3 – Collector
• Connection: Base controls current flow from emitter to collector (PNP type logic)
• Wiring: Use proper biasing resistors to avoid exceeding ratings

Datasheet and Documentation:

• Download S8550 2TY Datasheet (PDF)

Applications:

• Signal Amplification: Used in audio preamps and driver stages.
• Switching Circuits: Controls low voltage loads in digital electronics.
• Battery-Powered Devices: Suited for portable and power-efficient products.
• LED Drivers: Can be used to switch or dim LEDs.
• Consumer Electronics: Found in toys, remote controls, and gadgets.

Equivalent Models:

• S8050 (NPN version): Complementary NPN transistor in the same package
• 2N2907A: Higher power PNP transistor for similar use cases
• BC558: General-purpose PNP transistor alternative

Package Includes:

• 1 x S8550 2TY PNP 40V 500mA 300mW Transistor (SOT-23)