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MPSA18 Transistor Explained / Description:

MJE350 is a PNP high voltage transistor designed for applications where high voltage switching is required. The transistor is capable to handle a maximum load voltage of 300V which makes it ideal to use in many high voltage DC applications. The maximum load this transistor can handle is 500mA or 0.5A DC. MJE350 can not only use in high voltage circuits for switching but it can also be used in low voltage or battery-operated circuits as a switch.

With the max collector dissipation of 20W, this transistor can also perform well in audio amplifier-related applications. In most audio amplifier applications it can be used with its NPN complementary MJE340 to get good audio output watts.


Features / Technical Specifications:

  • Package Type: TO-126
  • Transistor Type:  NPN
  • Max Collector Current(IC): –5A
  • Max Collector-Emitter Voltage (VCE): –300V
  • Max Collector-Base Voltage (VCB): –300V
  • Max Emitter-Base Voltage (VEBO): –5V
  • Max Collector Dissipation (Pc): 20 Watt
  • Max Transition Frequency (fT): 4 MHz
  • Minimum & Maximum DC Current Gain (hFE): 30– 240
  • Max Storage & Operating temperature Should Be: -65 to +150 Centigrade



Inverter & UPS Applications

Switching Power Supply Applications

Linear Power Supply Applications

Battery Charger Circuits

Audio Amplification

DC High Voltage Switching

Motor Controller Applications




MJE350 High Voltage Bipolar Transistor

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