S8550 PNP Transistor SOT-23 COM11

DescriptionEvery electronics workbench needs a robust, general-purpose PNP transistor capable of handling demanding loads. The S8550 PNP Bipolar Transistor is exactly that component. Engineered for superior current-handling capabilities, it is highly favored for a massive variety of DIY electronics, audio design, and commercial repair applications.The High-Current SwitchMany standard PNP transistors max out at around 100mA, which limits their use to low-power logic signals. Like its NPN complement (the S8050), the S8550 dramatically increases your switching ceiling. With a continuous collector current rating of -500mA, it acts as a robust high-side electronic switch capable of powering small robotics motors, mechanical relays, and heavy LED arrays.Compact SOT-23 FootprintTo build professional, miniature electronics, minimizing board space is essential. This surface-mount SOT-23 version of the S8550 provides excellent thermal performance in an ultra-compact footprint. It features the universally recognized top mark 2TY, making component identification simple during inventory management, automated assembly, or manual board repairs.Circuit Best PracticesBecause the S8550 handles higher currents, it requires an adequate base current to achieve full saturation (turning completely “on” as a switch). Always calculate your base resistor carefully. For audio applications, this transistor is designed to pair flawlessly with the S8050 NPN transistor. Together, they form the backbone of highly efficient Class B or Class AB push-pull output stages.Key FeaturesHigh Current Handling: Safely drives loads up to -500mA, eliminating the need for bulkier power transistors in medium-duty applications.Low Saturation Voltage: Highly efficient when used as a switch, minimizing power loss and heat generation.Miniature Footprint: The SOT-23 SMD package optimizes valuable PCB real estate for compact IoT and robotics designs.Technical SpecificationsTransistor Polarity: PNP BJTCollector-Emitter Voltage (VCEO): -25V MaximumCollector-Base Voltage (VCBO): -40V MaximumEmitter-Base Voltage (VEBO): -5V MaximumContinuous Collector Current (IC): -500mAPower Dissipation (PD): 300mWDC Current Gain (hFE): 120 to 400 (typical)Package Type: SOT-23 (Surface Mount)Top Marking Code: 2TYIdeal ApplicationsHigh-Side Load Switching: Turning on power to sensors, modules, and displays from the positive voltage rail.Audio Amplification: Serving as the PNP output driver in push-pull audio amplifier circuits alongside the S8050.Motor Control: Driving small DC motors in custom robotics and RC vehicles.Electronics Repair: Replacing burnt-out 2TY-marked PNP transistors in power supplies, toys, and commercial logic boards.