SS9012 Transistor Pinout, Equivalent, Uses, Technical Specifications

This post defines the 9012 or SS9012 transistor pinout, equivalent, uses, technical specifications, description and other details on how and where to use this transistor.


SS9012 Transistor Pinout, Equivalent, Uses, Technical Specifications


Features / Technical Specifications

  • Package Type: TO-92
  • Transistor Type: PNP
  • Max Collector Current(IC): -500mA
  • Max Collector-Emitter Voltage (VCE): -20V
  • Max Collector-Base Voltage (VCB): -40V
  • Max Emitter-Base Voltage (VBE): -5V
  • Max Collector Dissipation (Pc): 625 Milliwatt
  • Max Transition Frequency (fT): 100 MHz
  • Minimum & Maximum DC Current Gain (hFE): 64 to 202
  • Max Storage & Operating temperature Should be: -65 to +150Centigrade


NPN Complementary

NPN Complementary of SS9012 is SS9013


Replacement and Equivalent

Alternative transistors for SS9012 are S8550, BC328, 2N4403, (The pin configuration of the substitute transistors shown here may be different from SS9012, and therefore it is suggested to check pin configurations of the transistor you want to use as a replacement or equivalent for SS9012.)


SS9012 Transistor Explained / Description

SS9012 is a BJT transistor manufactured in TO-92 package, it is also used in many commercial electronic appliances and devices. The transistor can be used for many common applications but according to the manufacturer it is mainly designed for audio amplification purposes and it can be used as a 1000mW amplifier for any device that provides few miliwatts audio output. Like other general purpose transistors which are 2N3906, 2N4403, BC559 etc. the SS9012 can also be used as a general purpose device in wide variety of electronics applications and it is also a must to have transistor in the electronic lab. Apart from that this transistor can also be used as a switch to drive loads under 500mA. This transistor comes in different  hFE values that can be determined with the last alphabet printed after the transistor number like SS9012D hfe value is 64~91, SS9012E HFE value is 78~112, SS9012F HFE value is 96~135, SS9012G is 112~166 and SS9012G HFE value is 144~202.


Where We Can Use SS9012 Transistor & How to Use

As mentioned above SS9012 is a general purpose PNP BJT transistor therefore it can be used in wide variety of general purpose applications. For example it can be used as an audio amplifier to directly drive a 1 watt speaker. It can also be used in audio amplification stages of an audio amplifier circuit. With the 500mA or 0.5A load driving capability you can drive a variety of loads with this transistor such as relays, high power transistors, ICs, LEDs etc. With -5V emitter-base voltage (VBE) it can also be used at the output of microcontrollers to drive loads under 500mA. It can also be used as a replacement transistor of many other general purpose transistors.



Output of Microcontrollers to Drive Loads

Audio amplifier

Any Signal Amplification

Drive Load Under 500mA

Audio Amplifier Stages


How to Get Long Term Performance

To get long term performance from SS9012 transistor it is recommended to always drive load under 500mA with this transistor, do not operate load of more than 20V. Use a suitable base resistor with the transistor. Always check pin configuration before placing in the circuit and do not store or operate the transistor in temperature below -55 centigrade and above +150 centigrade.

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