MPSA42 is a NPN transistor hence the collector and emitter will be left open Reverse biased when the base pin is held at ground and will be closed Forward biased when a signal is provided to base pin. It has a gain value of 30; this value determines the amplification capacity of the transistor normally MPSA42 will not be used for amplification due to its low gain value. The maximum amount of current that could flow through the Collector pin is mA, hence we cannot drive loads that consume more than mA using this transistor. To bias a transistor we have to supply current to base pin, this current IB should be limited to 5mA.
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MPSA42 is an NPN typically used transistor that has been widely used for high voltage switching and amplification applications. It is an advanced form of an amplifier with extra over-voltage and breaks down voltage protection property.
It is made of silicon material and easily available in a dip TO package. These have a little bit differ specifications and characteristics form each other. MPSA42 has volts emitter to collector voltage.
MPSA42 consists of three basic segments emitter-base and collector. Because it is an NPN transistor, therefore, current flows from collector to emitter. It works at dc operating voltage range 30 to votls. Its pinout configuration is shown in figure 1. All Features of this NPN transistor are mentioned as per the datahseet.
Unlike other transistors, it offers a high collector to emitter voltage. But you can drive a dc load with a maximum output current of mA. MPSA42 transistor is specifically designed for high voltage switching and amplifications. But mostly it is used for that load which has high voltage at the output side. When it is used as a switch then it works in two regions such as cut off and saturation region.
In cut off region, it acts as an open switch no current flows from collector to emitter. Similarly in the saturation region, it acts as a close switch then current flows from collector to emitter.
In this example , we will design a motor control circuit where the NPN transistor is used as a switch. MPSA42 transistor is commonly used for high voltage switching therefore here we will explain how it is used for turning on and off the high voltage dc motor 48V. This NPN transistor is connected to the motor according to the below diagram. Similarly when zero volts are applied at base pin then no current flows then transistor does not connect to ground and the motor does not turn on.
These boards are designed with the help of software therefore its 2D model diagram understanding is so much necessary. These transistors are available in T packing therefore its 2D model dimension figure is below here. For other packages, the user consults the datasheet of the required package. Notify me of follow-up comments by email. Notify me of new posts by email. Table of Contents.
MPSA42 Amplifier. Datasheet pdf. Equivalent
MPSA42 is an NPN typically used transistor that has been widely used for high voltage switching and amplification applications. It is an advanced form of an amplifier with extra over-voltage and breaks down voltage protection property. It is made of silicon material and easily available in a dip TO package. These have a little bit differ specifications and characteristics form each other.
MPSA42 NPN Transistor