NPN Bipolar Transistors (PN2222) - 10 pack
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In stock
Pack of 10 PN2222 NPN bipolar transistors for switching medium-power loads such as small motors, solenoids, and IR LEDs.
Pack of 10 PN2222 NPN bipolar transistors for switching medium-power loads such as small motors, solenoids, and IR LEDs.
Control input from ESP32 GPIO via ~1 kΩ base resistor. 3.3 V logic HIGH saturates the transistor.
Connects to the negative terminal of the load (buzzer –). The other load terminal connects to the positive supply rail.
Connects to circuit GND.
| Pin | Type | Function | Voltage |
|---|---|---|---|
| BASE | GPIO | Control input from ESP32 GPIO via ~1 kΩ base resistor. 3.3 V logic HIGH saturates the transistor. | 3.3 |
| COLLECTOR | GPIO | Connects to the negative terminal of the load (buzzer –). The other load terminal connects to the positive supply rail. | |
| EMITTER | Ground | Connects to circuit GND. | 0 |
Control input from ESP32 GPIO via ~1 kΩ base resistor. 3.3 V logic HIGH saturates the transistor.
Connects to the negative terminal of the load (buzzer –). The other load terminal connects to the positive supply rail.
Connects to circuit GND.
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