Introduction of MPSA13 Transistor

The MPSA13 is a type of NPN Bipolar Darlington transistor. It is specifically designed to be used in switching applications, for example, print hammer relays, solenoid, as well as lamp drivers. The device is located inside the TO-92 package, which was made for medium power use. It is widely used in switching applications. The content will be divided into the following parts: Features, MPSA13 Pinout, Specifications, MPSA13 Datasheet, Use, MPSA13 Equivalent, and MPSA13 Fuzz.

Features of MPSA13 Transistor

Reduces Board Space

Reduces Component Count

The SOT-23 device can be soldered by either reflow or wave.

The modified gull-winged leads absorb the heat during soldering.

Available in 8mm embossed tape as well as reel.

Pb-Free Packages are Available

Its DC current gain is 5000hFE(MPSA13 hfe).

MPSA13 Pinout

Below is the MPSA13 Pinout:



Package / Case – TO-226-3, TO-92-3


Operating Temperature –   -55°C~150°C TJ

MPSA13 Transistor Circuit

Below is the MPSA13 Transistor Circuit:

Where to Use the MPSA13 Transistor?

The MPSA13 transistor is general use and is suitable for the application of the output stage of amplifiers, touch sensors, power regulators, and as well as display drivers.

MPSA13 Equivalent:

You also could use MPSA63as the MPSA13 equivalent. You could find them on easybom.

What You need to Know about MPSA13?

What is MPSA13 Transistor?

The MPSA13 is an NPN Darlington transistor. It houses two NPN transistors in the same package. Its emitter is from the transistor that is first connected to the top of the other transistor. both collector pins are connected.

This feature allows the transistor to boast high gains. In this case, the MPSA13 boasts gained 5000. This is beneficial in designing audio amplifier circuits. The transistor can also be utilized for display drivers and sensors. A small amount of current through the bottom of the transistor triggers the transistor and causes it to conduct.

 What is MPSA13 Fuzz?

Fuzz is an important distortion type of effect. The MPSA13 fuzz effect is defined by the transformation of a normal smooth sine wave to a “sharp” rectangular tooth waveform. The result is more dispersed than normal distortion and overload. Overtones in the sound are amplified and enriched. This cross-modulation phenomenon happens in the non-harmonic region, which results in the Fuzz signal being extremely unharmonic. This is the main reason for the MPSA13 Fuzz attraction.

The fuzz effector is excellent, however, we wouldn’t recommend it as the first effector used. There are many factors. While it’s difficult to alter and adjust, it also puts lots of requirements on speakers. The speaker is also subject to the volume. If you require an effector, you should consider an effector that is software-based. Soft effects are now full of sound. You’ll be able to get all the sounds you require.

Package Dimensions

Below is the picture of the 2D Model and Dimensions from the MPSA13 Transistor Datasheet will be useful to know the package type and dimensions.

MPSA13 Datasheet

Download the MPSA13 datasheet below:


In short, the MPSA13 transistor is a Darlington transistor with two NPN transistors. It is widely used in the output stage of amplifiers, touch sensors, power regulators, and as well as display drivers. It has a high DC current gain of 5000hFE(MPSA13 hfe). Therefore, it is beneficial in designing audio amplifier circuits.


Leave a Reply

Your email address will not be published.