BU407 Transistor Pinout, Equivalent, Uses, Features and Other Details

BU407 is an NPN transistor available in TO-220 transistor package and having quite interesting specs. This article describes BU407 transistor pinout equivalent, uses, features and other details about this transistor.


BU407 Transistor Pinout Equivalent, Uses, Features



Features / Technical Specifications:

  • Package Type: TO-220
  • Transistor Type: NPN
  • Max Collector Current(IC): 7A
  • Max Collector-Emitter Voltage (VCE): 200V
  • Max Collector-Base Voltage (VCB): 400V
  • Max Emitter-Base Voltage (VBE): 5V
  • Max Collector Dissipation (Pc): 60 Watts
  • Max Transition Frequency (fT): 10 MHz
  • Max Storage & Operating temperature Should be: -65 to +150Centigrade


BU407 Transistor Explained / Description:

BU407 is an NPN transistor manufactured in TO-220 package. It is primarily designed to use in CRT’s and TV’s horizontal deflection applications. The transistor is having very good specs and features which make it ideal to use variety of other applications. Its high collector to emitter voltage of 150V makes it suitable to use in high voltage applications.

The device also has high speed switching capabilities and it has maximum output current of 7A makes it capable to drive variety of loads in electronic circuits. It requires low saturation voltage which is also a good feature that makes it ideal to use in low voltage circuits.


Where We Can Use it & How to Use:

As mentioned above BU406 is basically designed to use in horizontal deflection circuits but it can also be used for variety of general purpose and high speed switching applications. Moreover it can also be used for audio amplification purposes in high power and low power audio amplifiers.


Replacement and Equivalent:

2SD1069, BU109DP, BU109P, BU124A, BU407, BU409, 2SD823, 2SD1163, 2SD1163A, BU104P, BU124, BU406D, BU408.



TV’s and CRT’s horizontal deflection circuits

High speed switching

High voltage applications

Audio Amplifiers



Safe Operating Guidelines / Absolute Maximum Ratings:

To safely operate this transistor do not operate it on its maximum ratings and always stay 20% below from its absolute maximum ratings. The maximum collector current of the transistor is 7A therefore do not drive load of more than 560mA. The Maximum collector to emitter voltage is 200V so do not drive load of more than 160V. Always use a suitable heatsink with the transistor. The collector of the transistor is also connected with the heatsink tab so it is important to isolate the heatsink from circuit connections and always store or operate the transistor at temperature above -65 °C and below 150°C.



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