2N3055 transistor datasheet, Uses and Features

Features of the 2N3055 Transistor

Medium power transistor
Complementary NPN – PNP transistors
Low collector-emitter saturation voltage
Excellent safe operating area
Maximum current allowed trough collector: 15A DC
Maximum voltage across collector and emitter: 60V DC
Maximum voltage across collector and base: 100V DC
Maximum current allowed through base: 7A DC
DC current gain (hFE) up to 70
Maximum voltage across base and emitter: 7V DC
Operating temperature range: -65ºC to +200ºC
Total power dissipation: 115W

Transistor Type

NPN BJT: The 2N3055 is an NPN-type transistor, meaning it uses a positive voltage at the base relative to the emitter to turn on, allowing current to flow from the collector to the emitter.

The complementary PNP type is MJ2955.

2N3055 Transistor Pinout

2n3055 transistor uses

Audio Amplifiers:
- The 2N3055 is commonly used in the output stages of audio power amplifiers due to its ability to handle high currents and dissipate significant power. It can drive loudspeakers and other audio devices requiring substantial power.
Power Supplies:
- It is often used in regulated power supplies, particularly in the pass transistor stage, where it helps regulate the output voltage by dissipating excess power as heat. Its high current rating allows it to handle large loads.
Motor Control:
- In motor control circuits, the 2N3055 can act as a switch or amplifier, controlling the power delivered to motors in applications such as robotics, industrial machinery, and automotive systems.
Switching Circuits:
- Due to its ability to handle high currents, the 2N3055 is suitable for switching applications where it controls high-power loads like solenoids, lamps, and relays. It can be used in both linear (analog) and switching (digital) modes.
Inverters and Converters:
- The transistor is also used in DC-AC inverters and DC-DC converters, where it helps convert electrical power between different forms and voltages. Its high power capacity is ideal for these demanding applications.
Voltage Regulators:
- The 2N3055 is used in voltage regulator circuits, particularly in linear regulators, where it helps maintain a stable output voltage despite variations in the input voltage or load conditions.

2n3055 transistor equivalent

TIP3055(15A), 2N3773(16A), MJ15015(15A), BDX18(16A), 2N6609(30A), 2SC5200(15A)

Note– Beware from Fake and duplicate power transistors, in market there are copy of original are available at cheap price, these copy items are duplicate and fake, these duplicate transistors are poor in quality and does not work with high load.

Always use a proper heatsink with this transistor or with any power transistor because these are dissipating power as Heat, so need to control heat using the heatsink.