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Transistor (pack of 5) – NPN

Transistor are a type of electronic switch used for controlling the flow of a circuit and amplifying signals.

They have three legs: the base, the collector, and the emitter.

NPN: When a voltage is applied to the base leg of the transistor it allows current to flow from the collector to the emitter. This means you can control a higher current path using logic level signals from a device like a micro-controller.

PNP: When a voltage is applied to the base leg of the transistor it prevents current from flowing from the collector to the emitter.

Type NPN
Part No. PN2222ARLRPG
Case or Package Type TO-92-3(TO-226)
Maximum DC Collector Current: 0.6 A
Collector- Base Voltage VCBO: 75 V
Collector- Emitter Voltage VCEO Max: 40 V
Emitter- Base Voltage VEBO: 6 V
Gain Bandwidth Product fT: 300 MHz
Collector-Emitter Saturation Voltage: 1 V
DC Collector/Base Gain hFE Min: 35
Mounting Type Through Hole
Maximum Power Dissipation: 625 mW
Datasheet Datasheet


Type PNP
Part No. BD140
Case or Package Type SOT32
Collector Current 1.5 A
Collector-Emitter V(br) 80 V
Collector-Emitter V(sat) 500 mV
DC Current Gain (hFE) 40
Mounting Type Through Hole
Power 1.25W
Datasheet Datasheet