S8050 NPN Bipolar Transistor – 20V 700mA TO-92
The S8050 NPN Transistor is a general-purpose bipolar junction transistor (BJT) designed for low-voltage switching, signal amplification, and electronic control applications.
Featuring a maximum collector-emitter voltage of 20V and a continuous collector current rating of up to 700mA, the S8050 is suitable for driving small loads, switching circuits, and general electronics projects.
Its compact TO-92 through-hole package makes it easy to integrate into breadboards, prototype circuits, and custom printed circuit boards (PCBs).
Key Features
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NPN Bipolar Transistor: Suitable for switching and amplification applications.
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700mA Collector Current: Supports moderate-current electronic loads.
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20V Collector-Emitter Rating: Designed for low-voltage circuits.
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High DC Current Gain: Suitable for signal amplification and transistor driver circuits.
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Compact TO-92 Package: Convenient for through-hole PCB assembly.
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Versatile Applications: Suitable for Arduino projects, DIY electronics, and transistor-based control circuits.
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General-Purpose Design: Can be used in switching stages and Class B push-pull amplifier circuits.
Technical Specifications
| Parameter |
Specification |
| Model |
S8050 |
| Transistor Type |
NPN Bipolar Junction Transistor (BJT) |
| Package |
TO-92 |
| Mounting Type |
Through-Hole |
| Collector-Emitter Voltage (VCEO) |
20V |
| Collector-Base Voltage (VCBO) |
30V |
| Emitter-Base Voltage (VEBO) |
5V |
| Maximum Collector Current (IC) |
700mA |
| DC Current Gain (hFE) |
Up to 400 (variant-dependent) |
| Maximum Power Dissipation |
2W (stated; requires verification) |
| Number of Terminals |
3 |
| Terminal Functions |
Emitter, Base, Collector |
Pin Configuration
The S8050 transistor has three terminals:
| Terminal |
Function |
| Emitter (E) |
Current return terminal |
| Base (B) |
Controls transistor conduction |
| Collector (C) |
Connects to the controlled load or circuit |
Important: The physical pin order can vary by manufacturer. Verify the exact pinout using the component marking and datasheet before installation.
Applications
- Arduino and Microcontroller Switching Circuits
- Small DC Motor Driver Stages
- LED Switching and Control
- Relay Driver Circuits
- Signal Amplification
- Audio Amplifier Stages
- DIY Electronics Projects
- Electronic Prototyping
- General-Purpose Transistor Circuits
Important Notes
- Use an appropriate base resistor when controlling the transistor from a microcontroller.
- Do not exceed the maximum voltage, current, or power dissipation ratings.
- The maximum collector current rating does not guarantee continuous operation at that current under all conditions.
- Use a flyback diode when switching inductive loads such as relays or motors.
- The transistor is not a direct replacement for every NPN transistor; verify electrical ratings and pin configuration.
- Power dissipation and current gain depend on the manufacturer, operating conditions, and device variant.
Package Includes
