2N2222 Transistor (TO-18) Pinout, Features, Equivalents, Datasheet

The 2N2222 is a silicon planar NPN transistor and housed in a hermetic TO-18 package suitable for general purpose low-power tasks like switching and amplification.

It can handle up to 60V for collector-base and 30V for collector-emitter voltages, with a maximum collector current of 800mA. The emitter-base voltage is 5V, and this transistor can dissipate up to 500mW of power. With a minimum Beta (β) of 100, the 2N2222 transistor ensures reliable performance across various applications.

2N2222 Pinout Configuration

The pin configuration of the 2N2222 transistor is as follows:

Pin No.	Name	Description
1	Emitter	Electrons emitted from the emitter into the first PN.
2	Base	Controls the biasing of the transistor.
3	Collector	Electrons Emitted from Emitter Collected by the Collector.

Absolute Maximum Ratings of 2N2222

The quick technical specifications and features of the 2n2222 transistor are given below:

• Transistor Type: Si
• Polarity: NPN
• Emitter-Base Voltage (Veb max.): 5V
• Collector Power Dissipation (Pc max.): 500mW
• Collector-Base Voltage (Vcb max.): 60V
• Collector-Emitter Voltage (Vce max.): 30V
• Collector Current (Ic max.): 800mA
• Operating Junction Temperature (Tj): -65°C to 175°C
• Transition Frequency (ft): 250MHz
• Collector Capacitance (Cc): 8pF
• Forward Current Transfer Ratio (hFE min.): 100
• Noise Figure (dB): -
• Package: TO-18

Note: Complete Technical Details can be found in the 2N2222 transistor datasheet given at the end of this page.

2N2222 PNP Complementary

There are no complementary PNP transistors to the 2N2222.

2N2222 Equivalent Transistor

Transistor	Type	Polarity	Pc	Vcb	Vce	Veb	Ic	Tj	Ft	Cc	Hfe	Caps
BFX95	Si	NPN	0.5	60	30	5	0.8	175	250	8	100	TO18
MM513	Si	NPN	0.5	60	30	5	0.8	175	250	8	100	TO18

These two transistors have similar features and can be used as replacements for the 2N2222 in terms of their package, emitter-base voltage, transition frequency, and forward current transfer ratio. But there might be slight differences in pin layout. Please verify before using them in a PCB or project.

Applications of 2N2222

1. Switching load of up to 0.8A
2. Oscillators
3. Signal processing
4. Amplifiers
5. Motor control
6. Voltage regulators
7. LED drivers
8. Sensor Interfaces

2N2222: 2D Model and Dimensions

If you are designing a PCB or perf board with this component, the following picture from the 2N2222 datasheet will be useful to determine its package type and dimensions.

Component Datasheet

2N2222 Datasheet

2N2222 Safe Operating Guidelines

It is recommended not to push the 2N2222 transistor to its absolute limits. It's best to stay at least 20% below its maximum ratings. For example, while it can handle a maximum load of 800mA, it's safer to avoid exceeding 640mA. Similarly, its maximum load voltage is 30V, so it's advisable to stay below 24V. Additionally, ensure the transistor's temperature stays between -65°C and 175°C for proper operation.