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मूल्य सूची: Retail Price (B2C) मूल्य सूची
8050 NPN General Purpose Transistor

8050 NPN General Purpose Transistor

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SpecificationDetails
Transistor TypeNPN
Package TypeTO-92 (Plastic Case)
Max Collector Current 500mA to 700mA (Continuous)
Max Collector-Emitter Voltage25V
Max Collector-Base Voltage40V
Power Dissipation625mW
DC Current Gain 85 to 300
Price
₹ 4.24 ₹ 4.24
(Tax included)

बारकोड: 5348594

Product Description

The 8050 (often labeled S8050) is a high-current, low-voltage NPN epitaxial silicon transistor. While standard small-signal transistors like the BC547 are limited to 100mA, the S8050 is designed to handle a much higher continuous collector current (up to 700mA in some batches). This makes it the "go-to" transistor for driving small DC motors, solenoids, high-brightness LED arrays, and relay coils that exceed the capacity of standard signal transistors. Housed in the widely used TO-92 package, it is a versatile component for switching and amplification in consumer electronics, toys, and DIY robotic projects.

Key Features

  • High Current Handling: Supports up to 700mA, allowing it to bridge the gap between small signal and medium power transistors.

  • Low Saturation Voltage: Ensures efficient switching with minimal heat generation when the transistor is fully "ON."

  • High Gain ($h_{FE}$): Provides a high amplification factor, enabling low-power microcontrollers to switch significant loads.

  • Complementary Pair: Specifically designed to be used alongside the S8550 (PNP) for balanced push-pull amplifier circuits.

  • Broad Application Range: Suitable for Class B amplifiers, motor drivers, and logic-level switching.

Technical Details

  • Frequency ($f_T$): 100 MHz to 150 MHz.

  • Storage Temperature: -65°C to +150°C.

  • Pin Configuration: 1-Emitter, 2-Base, 3-Collector (Standard for most S8050 brands).

Prototyping and Engineering Tips from Robogears

  • Active-High Logic: CRITICAL: As an NPN transistor, the 8050 is "active high." The load should be connected between the Positive (+) rail and the Collector, with the Emitter connected to Ground. The transistor turns ON when a positive voltage (greater than 0.7V relative to the emitter) is applied to the Base.

  • The Base Resistor Rule: Never connect the Base pin directly to an Arduino, ESP32, or battery. You must use a current-limiting resistor (typically 220Ω to 2.2kΩ) to prevent the transistor from drawing too much current and damaging your microcontroller.

  • Thermal Considerations: When switching loads above 400mA, the TO-92 package will generate noticeable heat. If the transistor becomes too hot to touch, consider using two in parallel or upgrading to a larger TO-220 package like the TIP122.

  • Inductive Load Protection: If you are driving a Relay or a Motor, always place a "Flyback Diode" (like a 1N4007) in reverse across the load. This prevents the high-voltage spike generated when the motor stops from destroying the transistor's silicon junction.

  • Check the Pinout: While E-B-C is standard, some manufacturers use different pin sequences. Always use a digital multimeter in "Diode Test" mode or a component tester to verify the leads before soldering into a permanent PCB.

Package Includes

  • 1 x 8050 NPN General Purpose Transistor (TO-92)

Disclaimer: Product images are shown for illustrative purposes only. The exact branding placement or lead finish may vary slightly between manufacturing batches, but all technical specifications and performance standards remain as described.

Safety Warning: Do not exceed the maximum Collector-Emitter voltage of 25V. Ensure your power supply is within the safe operating limits of the transistor to avoid thermal runaway. Always double-check polarity before applying power to your circuit.