S8550 PNP transistor - 40 V, 0,5 A, TO-92

Product Overview

• Bipolar PNP transistor for switching applications in electronics
• Breakdown voltage up to 40 V
• Collector current up to 0.5 A
• Typical current gain of 100 to 300
• In a TO-92 package, with three leads: base, collector, emitter

Product Description

The S8550 is a bipolar PNP transistor for building switching circuits and amplifier stages. With a breakdown voltage of up to 40 V and a maximum collector current of 0.5 A, the transistor is suitable for use with 5 V and 12 V power supplies, as well as for driving relays, LEDs, and low-power motors. Its current gain is typically between 100 and 300, so a base current of just a few milliamps is enough to turn the transistor on.

The component is controlled via the base. When a voltage is applied there, the transistor is off; when the base is pulled to ground, the transistor turns on and creates a conductive connection between the emitter and collector. This switching function makes the S8550 a versatile switching component for digital circuits, for example, to switch signal sources, drive microcontroller outputs, or power load outputs. When operating directly with 5 V logic, however, a base resistor must be provided to limit the base current.

The S8550 is used in audio amplifiers, switching regulators, and output drivers for digital signals. In prototyping, the transistor is often used to electrically isolate logic outputs from the loads connected downstream. To build a circuit, all you need in addition to the transistor itself is a suitable resistor network at the base and collector, depending on the intended load.

Safety Information

The S8550 is not intended for installation in household mains circuits. This component is intended solely for prototypes, testing, and development. Observe the correct transistor polarity when soldering; reverse polarity will destroy the component.

Package Contents

• 1x S8550 - PNP Transistor, 40V, 0.5A