All You Need to Know About MPS2222A

Ⅰ. Overview of MPS2222A

MPS2222A is an NPN transistor produced by Fairchild Semiconductor. Its main features include power dissipation of 0.625W; collector current of 0.6A; maximum withstand voltage of collector and base of 75V; maximum withstand voltage of collector and emitter of 40V; maximum withstand voltage of emitter and base of 6V; collector and base reverse leakage current is 0.01μA; emitter and base reverse leakage current is 0.01μA; collector and emitter saturation voltage is 0.3V; characteristic frequency is 300MHz; DC amplification factor is 100 to 300.

It is a general-purpose transistor that can be used in a variety of different applications. For example, it can be used in audio amplifiers or high impedance instrumentation amplifiers. However, it should be noted that its package is a TO-92 package, and its pinout is different from other common transistor pinouts.

Ⅱ. MPS2222A Pinout

Ⅲ. MPS2222 vs. MPS2222A

Ⅳ. Specifications of MPS2222A

Ⅴ. Characteristics of MPS2222A

1. Epitaxial Planar Construction

2. NPN silicon epitaxial planar transistors for switching and amplifier applications.

3. Complementary PNP Type Available (MPS2907A)

4. On special request, this transistor can also be manufactured in pin configuration TO-18.

5. This transistor is also available in SOT-23 housing, model number MMBT2222A.

Ⅵ. Package of MPS2222A

Ⅶ. Application of MPS2222A

1. Switching application

Since MPS2222A has a high switching speed and a small saturation voltage drop, it can be used as a switching device to exert its characteristics in applications such as switching power supplies, motor drives, and ballasts.

2. Excitation level amplification

MPS2222A can also be used for excitation level amplification. In a multi-stage amplifier, the excitation stage amplification is the first stage amplification, and its main function is to amplify the weak input signal enough to drive the subsequent stages to further amplify. In excitation stage amplification applications, the main performance parameters of the device include voltage amplification, input impedance, output impedance, etc.

3. Instrumentation amplifier

The MPS2222A’s high input impedance, low noise, and low-temperature drift make it an ideal choice for high-impedance instrumentation amplifiers.

4. Exciter application

In exciter application, MPS2222A can be used as a preamplifier to provide sufficient and stable driving signals for the post-amplifier.

5. Audio power amplification

MPS2222A can be used for audio power amplification, such as audio amplifiers. In audio power amplification applications, the main performance parameters of the device include certain power, gain, bandwidth and distortion. It should be noted that the design and manufacturing of audio amplifiers need to follow some basic principles, including stability, frequency response, distortion, noise, etc.

Ⅷ. Replacement and Equivalent

2N4401, 2SC945, 2SC1008, 2SC9013, KSC1008, S8050, PN2222A