MPSA55 Transistor Pinout, Equivalent, Features, Applications and More

This post describes MPSA55 transistor pinout, equivalent, features, applications and other important information about this PNP BJT transistor.


MPSA55 Transistor Pinout, Equivalent, Features, Applications



Features / Technical Specifications:

  • Package Type: TO-92 and Other Packages
  • Transistor Type:  PNP
  • Max Collector Current(IC): –500mA
  • Max Collector-Emitter Voltage (VCE): –60V
  • Max Collector-Base Voltage (VCB): –60V
  • Max Emitter-Base Voltage (VEBO): –5V
  • Max Collector Dissipation (Pc): 625 mW
  • Max Transition Frequency (fT): 50 MHz
  • Minimum & Maximum DC Current Gain (hFE): 100
  • Max Storage & Operating temperature Should Be: -55 to +150 Centigrade


NPN Complementary:

NPN Complementary of MPSA55 is MPSA05


Replacement and Equivalent:

2SA1315Y, BC528, BC528-10, BC528-16, BC528-25, 2SA709G, 2N5401, BC527, 2SA709Y, BC490A, BC490B, BC640-16, BC880, ECG298.


MPSA55 Transistor Explained / Description:

MPSA55 is a general purpose PNP transistor available in TO-92 and other small package. The transistor is having quite good characteristics due to which it can be used in variety of general purpose applications which can be either switching application or amplification. As a switch it can drive load of upto -500mA with the load voltage of upto -60V. The collector-emitter saturation voltage of the transistor is only 0.25 which is another plus point and thus this transistor can be used in low voltage applications. Its collector dissipation of 625mW and the DC current gain of 100 also make it suitable to use in amplification applications. On the other hand the transition frequency of 50MHz makes it suitable for RF applications under 50MHz.



Where We Can Use it & How to Use:

The MPSA55 can be used in many applications such as switching and amplification. As a switch it can easily drive loads such as relay, high power transistor etc. As an amplifier it can drive an 8 Ohms speaker directly or it can also be used in audio amplifier circuit stages. Other than that the maximum transition frequency of 50MHz also makes it ideas to use in RF circuits under 50MHz.



Switching loads under -500mA

Telecommunication circuits

Computer Circuits

Audio amplification

RF applications

Many general purpose applications


How to Safely Long Run in a Circuit:

To get long term performance with this transistor it is important to use this transistor atleast 20% below from its maximum ratings. The maximum collector current is -500mA therefore do not drive load of more than -400mA. The collector-emitter voltage is 60V therefore to not drive a load of more than 48V and always store or use this transistor in temperature above -55 degree Celsius and below +150 degree Celsius.



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


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