MJE350 Transistor Pinout, Equivalent, Features, Uses

MJE350 is a TO-126 packaged PNP high voltage transistor, In this post we are going to discuss about MJE350 transistor pinout, equivalent, features, uses and other details on how and where we can use this transistor.


MJE350 Transistor Pinout, Equivalent, Features, Uses



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


NPN Complementary:

NPN Complementary of  MJE350 is MJE340


Replacement and Equivalent:

Here are some nearest possible replacements and equivalents of MJE350: 2SA795, 2SA818, 2SA835, 2SA898, 2SA899, 2SA939, 2SA939, 2SA1110, 2SB526, 2SB527, 2SB528, 2SB536, 2SB648, 2SB649, KSA1220A, MDS60


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 maximum load voltage of 300V which makes it ideal to use in much high voltage DC applications. The maximum load this transistor can handle is 500mA or 0.5A DC. MJE350 can not only used in high voltage circuits for switching but it can also be used in low voltage or battery operated circuits as 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 complimentary MJE340 to get good audio output watts.



Where We Can Use it & How to Use:

MJE350 can be used in wide variety of general purpose applications like switching and amplifications for not only in high voltage circuits but also in low voltage and battery operated circuits. With the max collector current of 500mA this transistor can be used to drive many loads like relays, high voltage transistors, low voltage transistors etc.

On the other hand it can also be used in audio related applications like as a separate audio amplifier to drive a speaker or also in audio amplifier stages.



Inverter & UPS Applications

Switching Power Supply Applications

Linear Power Supply Applications

Battery Charger Circuits

Audio Amplification

DC High Voltage Switching

Motor Controller Applications


How to Safely Long Run in a Circuit:

Getting long term performance with MJE350 it is suggested to always use it atleast 20% below its maximum ratings. The maximum collector-emitter voltage is -300V therefore do not apply more than 240V across collector-emitter. The max collector current is 500mA therefore do not apply more than 400mA following the 20% rule. Use a suitable heatsink with the transistor and always store and operate between -65 centigrade and +150 Centigrade.



To Download the datasheet just copy and paste the below link in your browser.


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