BU407 transistor

BU407 transistor
BU407 transistor

BU407 transistor electrical specification

  • BU407 is an NPN epitaxial silicon transistor device
  • Collector to emitter voltage is 150V
  • Collector to base voltage is 330V
  • Emitter to base voltage is 6V
  • Collector current is 7A
  • Pulsed collector current is 10A
  • Base current is 4A
  • Power dissipation is 60W
  • Current gain bandwidth (FT) is 10MHz
  • Junction temperature is between -65 to 150℃
  • Collector to emitter saturation voltage (VCE (SAT)) is 1V
  • Output capacitance (Cob) is 80pF
  • High voltage switching device

BU407 Pinout

BU407 Pinout
BU407 Pinout
Pin Number Pin Name Description
1 Base Base terminal is the trigger for the transistor
2 Collector Current flow through the collector 
3 Emitter  Current flows through the emitter

 

BU407 transistor package

BU407 is an NPN high-voltage transistor that has a TO-220 package, it is a bulkier package.

TO-220 is a three-terminal bulkier package made with epoxy/plastic material, this will provide temperature capacity and less weight for the device.

TO-220 had a coating at the backside for heat transferring, we can attach heat sink heat with the package because it is the through-hole package.

BU407 transistor electrical specification description & application  

Here we explain the electrical specifications of the BU407 transistor, the explanation is helpful for a better understanding.

Voltage specs

The voltage specifications of the BU407 transistor are collector to emitter is 150V, emitter to base voltage is 6V, and collector to the base is 330V, which is the terminal voltage specs.

The collector-to-emitter saturation voltage of the BU407 transistor is 1V, it is the switching voltage for the device.

The voltage specifications of the BU407 transistor shows, it is a high-voltage device which having many high-voltage applications.

Current specs

The collector current of the BU407 transistor is 7A, which is the maximum load capacity of the transistor.

The pulsed collector current BU407 transistor is 10A, it is the current value that is calculated at a specific condition.

The base current of the BU407 transistor is 4A, it is the current value to trigger the transistor.

Dissipation specs

The dissipation ability of the BU407 transistor is 60W, it is the combination of the voltage and current value of the device.

Transition frequency

The transition frequency value of the BU407 is 10MHz.

Junction temperature/ storage temperature

 The temperature value of the BU407 transistor is -65 to 150℃.

Output capacitance

The output capacitance value of the BU407 transistor is 80Pf

BU407 DATASHEET

If you need the datasheet in pdf please click this link

BU407 equivalent

BU407 transistor have equivalent transistor device such as 2SD1069, BU106DP, 2SD823, 2SD1163, and BU408, each of the device have the same set of electrical specifications.

BU407 is a HIGH voltage device, so they had more high voltage and switching applications.

Before the replacement of the BU407 transistor, we need to check the voltage specs, PINOUT details, and current value of the devices.

BU407 vs BU109 vs 2SD1069

CharacteristicsBU407BU1092SD1069
Collector to base voltage (VCB)330V330V300V
Collector to emitter voltage (VCE)150V150V150V
Emitter to base voltage (VEB)6V6V6V
Collector to emitter saturation voltage (VCE (SAT))1V        -1.5V
Collector current (IC)7A7A7A
Base current (IB)4A4A2A
Pulsed collector current (I­CM)10A10A15A
Power dissipation60W60W1.75W
Junction temperature (TJ)-65 to +150°C-65 to +150°C-55 to +150°C
Transition frequency (FT)10MHZ10MHZ   18MHz
Gain (hFE)       -       -10hFE
Output capacitance80pF--
Noise figure---
PackageTO-220TO-3 TO-220C

BU407 transistor applications

  • HIGH voltage applications
  • Switching applications

BU407 transistor characteristics curves

output characteristics of the BU407
output characteristics of the BU407

The graph shows the output characteristics of the BU407 transistor, and the graph plots with collector current vs collector to emitter voltage.

At different base current values from lower values to higher, the collector current increases its position.

DC current gain characteristics of the BU407
DC current gain characteristics of the BU407

The graph shows the DC current gain characteristics of the BU407 transistor and the graph plots with DC current gain vs collector current.

At constant voltage values, the DC current gain starts from a particular value and then increases, then it touches a limit and drops towards the lower value.

safe operating area characteristics of the BU407
safe operating area characteristics of the BU407

The graph shows the safe operating area characteristics of the BU407 transistor, the graph plots with collector current vs collector to emitter voltage.

At the graphical curve, different specs are been mentioned such as switching speed, dissipation limit, temperature value, and voltage value.

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