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MPSA94

Manufacturer: FORWARD, MOTOROAL

TECHNICAL SPECIFICATIONS OF PNP EPITAXIAL PLANAR TRANSISTOR

Partnumber Manufacturer Quantity Availability
MPSA94 FORWARD, MOTOROAL 11029 In Stock

Description and Introduction

TECHNICAL SPECIFICATIONS OF PNP EPITAXIAL PLANAR TRANSISTOR # Introduction to the MPSA94 Transistor  

The **MPSA94** is a high-voltage PNP bipolar junction transistor (BJT) commonly used in amplification and switching applications. Designed to handle substantial voltage levels, it is well-suited for power supply circuits, audio amplifiers, and other high-voltage electronic systems.  

### Key Features  
- **High Voltage Capability**: The MPSA94 can withstand collector-emitter voltages (VCEO) of up to **-400V**, making it ideal for circuits requiring robust voltage tolerance.  
- **Moderate Current Handling**: With a continuous collector current (IC) rating of **-0.5A**, it is suitable for low to medium-power applications.  
- **Low Power Dissipation**: The device has a power dissipation (PD) of **625mW**, ensuring efficient operation in various configurations.  
- **Complementary Pair**: Often paired with its NPN counterpart, the **MPSA44**, for push-pull amplifier designs.  

### Applications  
The MPSA94 is frequently employed in:  
- High-voltage power supplies  
- Audio amplifier stages  
- Signal switching circuits  
- Voltage regulation systems  

### Electrical Characteristics  
- **DC Current Gain (hFE)**: Typically ranges between **25 and 40**, depending on operating conditions.  
- **Transition Frequency (fT)**: Approximately **50MHz**, allowing for reasonable high-frequency performance.  

### Packaging  
The transistor is commonly available in a **TO-92** package, providing a compact and cost-effective solution for through-hole PCB mounting.  

With its high-voltage tolerance and reliable performance, the MPSA94 remains a practical choice for engineers designing circuits that demand durability and efficiency.

Application Scenarios & Design Considerations

TECHNICAL SPECIFICATIONS OF PNP EPITAXIAL PLANAR TRANSISTOR

Alternative Part Number

  • KSP94 --: PNP high-voltage transistor with similar 400V VCEO rating and low current, direct functional replacement for MPSA94.
  • 2N5401 --: Widely available PNP high-voltage transistor (150V) often used where MPSA94 is specified; check voltage margin for the application.
  • MMBTA94 --: SMD PNP high-voltage transistor in the same A94 family electrical class, suitable when a surface-mount equivalent is acceptable.
  • BC556 --: PNP transistor with adequate voltage rating for many MPSA94 applications, though lower VCEO so verify circuit margins.
  • 2N6520 --: PNP high-voltage transistor with similar 350V VCEO rating and low current, commonly used as a direct substitute for MPSA94 in high-voltage amplifier circuits.
  • BF493 --: PNP high-voltage transistor with 350V rating and comparable current gain, suitable replacement for MPSA94 in general high-voltage switching applications.

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