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MPSA12 from NS,National Semiconductor

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MPSA12

Manufacturer: NS

NPN SILICON PLANAR MEDIUM POWER DARLINGTON TRANSISTOR

Partnumber Manufacturer Quantity Availability
MPSA12 NS 3500 In Stock

Description and Introduction

NPN SILICON PLANAR MEDIUM POWER DARLINGTON TRANSISTOR # Introduction to the MPSA12 Transistor  

The **MPSA12** is a high-gain NPN bipolar junction transistor (BJT) designed for low-power amplification and switching applications. Known for its high current gain (hFE), this transistor is commonly used in signal amplification, sensor interfaces, and small-signal processing circuits where minimal input current is required to drive larger loads.  

With a maximum collector-emitter voltage (VCEO) of 30V and a collector current (IC) rating of 500mA, the MPSA12 is suitable for low-voltage circuits. Its high DC current gain, typically ranging from 100 to 800, ensures efficient signal amplification in audio stages, relay drivers, and other control systems.  

The transistor is housed in a **TO-92 package**, making it compact and easy to integrate into various circuit designs. Its low noise characteristics and reliable performance make it a preferred choice for precision analog applications.  

When using the MPSA12, designers should ensure proper biasing and heat dissipation, especially in continuous operation, to maintain stability and longevity. It is often paired with complementary PNP transistors, such as the MPSA42, in push-pull amplifier configurations.  

Overall, the MPSA12 is a versatile and cost-effective component, widely utilized in consumer electronics, industrial controls, and hobbyist projects where high gain and dependable performance are essential.

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