PN2222 transistor
PN2222 transistor specification
- PN2222 is a general-purpose NPN transistor
- Collector to emitter voltage is 30V
- Collector to base voltage is 60V
- Emitter to base voltage is 5V
- Collector current is 600mA
- The Base current is 5mA
- Collector cutoff current (ICBO) 01uA
- Power dissipation is 625mW
- DC current gain is 35 to 300hFE
- Transition frequency (FT) current gain bandwidth is 300MHz
- Junction temperature is between –55 to 150℃
- Collector to emitter saturation voltage (VCE (SAT)) is 1V
- Noise figure is 4dB
PN2222 transistor Pinout
| Pin Number | Pin Name | Description |
| 1 | EMITTER | The emitter is the input of the transistor. |
| 2 | BASE | The base is used to trigger the transistor |
| 3 | COLLECTOR | The collector is the output of the transistor |
PN2222 transistor package
The PN2222 component had the transistor package TO-92, the TO-92 is a general-purpose package.
The TO-92 package is made with a mixture of epoxy and plastic, it is the most compact transistor package, so the circuit made with these transistors is small and compact.
PN2222 transistor specification and application description
In this section, we explain the specification description and application explanation of the PN2222 transistor.
Voltage specs
The voltage terminal specs such as collector to the base are 60V, collector to emitter is 30v, and emitter to base voltage is 5v, the transistor terminal voltage specs show that PN2222 is a general-purpose transistor type.
The collector to emitter saturation voltage is 1v, it is the voltage used to turn ON the collector to emitter junction.
Current specs
The collector current is 600mA, it is the maximum load capacity of the PN2222 transistor.
Dissipation specs
The power dissipation of the PN2222 transistor is 625mW, the power dissipation of the PN2222 transistor.
Current gain specs
The current gain of the PN2222 transistor is 35 to 300hFE, the gain value is important at amplifier and voltage regulator devices.
Transition frequency
The transition frequency is 300MHz, this is the switching frequency of this device.
Junction temperature
The junction temperature of -55 to 150℃, this is the most common temperature value for a higher power transistor device.
PN2222 transistor DATASHEET
If you need the datasheet in pdf please click this link
PN2222 transistor equivalent
The transistors such as 2N4401, 2SC1008, 2SD471A, BC337, MPS651, PN2219, MPS3704, and ZTX450.
The electrical specifications of each transistor are the same, these devices have been used for almost the same applications.
PN2222 vs 2N4401 vs MPS650
In the table, we listed the PN2222 vs 2N4401 vs MPS650, the comparison of each transistor electrical specification.
Characteristics PN2222 2N4401 MPS650
Collector to base voltage (VCB) 60V 60V 60V
Collector to emitter voltage (VCE) 30V 40V 40V
Emitter to base voltage (VEB) 5V 6V 5V
Collector current (IC) 600mA 0.6A 2A
Power dissipation 625mW 625mW 625mW
Junction temperature (TJ) 150°C 150°C 150°C
Transition frequency (FT) 300MHZ 250MHZ 75MHz
Noise (N) 4dB - -
Gain (hFE) 35 to 300hFE 100 to 300hFE 75hFE
Package TO-92 TO-92 TO-92
In the electrical specification comparison of PN2222 vs 2N4401 vs MPS650, the voltage and current specs of each of the transistors are the same.
The current gain value of PN2222 and 2N4401 is almost the same, but the MPS650 had a lower value.
The transition frequency value is higher at PN2222 and lower at the MPS650 transistor.
PN2222 transistor characteristics
The figure shows the DC current gain characteristics of the PN2222 transistor, the graph is been plotted with current gain vs collector current.
As we can see from the graph, the current gain will touch the peak value and drop, the collector current value will increase towards a larger limit.
The figure shows the collector saturation region characteristics of the PN2222 transistor, the graph is plotted with the collector to emitter voltage vs base current.
When each time the collector current value increases, the breakdown must happen at a point, and voltage increases towards a larger value.
Applications of PN2222 transistor
- General-purpose applications
- Motor speed controller
- Converter circuit
- Rectifier circuit
- Darlington pair
