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BU810 The BU810 is an NPN Darlington transistor from STMicroelectronics. It features a 400V collector-emitter voltage, 7A collector current, and 75W power dissipation in a TO-220 package.
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BU810

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Mfr Name: STMicroelectronics
STMicroelectronics
The BU810 is an NPN Darlington transistor from STMicroelectronics. It features a 400V collector-emitter voltage, 7A collector current, and 75W power dissipation in a TO-220 package.
✓ Total Stock: 8,805 pcs

BU810 Available from 2 distributors

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Components Technology Group, Inc. ✓
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8,777 pcs
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28 pcs
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28 pcs On Request 1 On Request On Request On Request On Request On Request
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BU810 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Mounting Type
Operating Temperature
Power
Supplier Device Package
Transistor Type
Vce Saturation (Max) @ Ib, Ic
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BU810 Description

Short technical summary and product information.

The BU810 is a medium voltage NPN fast-switching Darlington transistor manufactured by STMicroelectronics. It is designed for high frequency and efficiency converters, switching regulators, and motor control applications. The device integrates an antiparallel collector-emitter diode and offers low base-drive requirements with fast switching speed.

 

Key electrical specifications include a maximum collector-emitter voltage (VCEO) of 400V, collector-base voltage (VCBO) of 600V, and a continuous collector current rating of 7A with a peak capability of 10A. The transistor can dissipate up to 75W of power with a junction-to-case thermal resistance of 1.66°C/W. Saturation voltages are specified at multiple current levels, with VCE(sat) reaching a maximum of 3V at 7A collector current.

 

The BU810 is housed in a standard TO-220-3 through-hole package, suitable for PCB mounting with heatsinking. The device has a maximum junction temperature of 150°C and a storage temperature range of -65°C to 150°C. Switching performance is characterized with typical turn-on time of 0.6µs, storage time of 1.5µs, and fall time of 0.5µs under resistive load conditions.

BU810 Quick Information

Product Type: NPN Darlington Transistor
Canonical Name: STMicroelectronics BU810 NPN Darlington Transistor
Subcategory: Bipolar (BJT) - Single

BU810 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BU810 Features

  • NPN Darlington transistor with integrated antiparallel diode.
  • Rated for 400V collector-emitter voltage and 7A current.
  • Fast switching with 0.6µs typical turn-on time.
  • 75W power dissipation in TO-220 through-hole package.
  • Low base-drive requirements for simplified drive circuits.

BU810 Applications

  • Used in high frequency switching converters.
  • Suitable for switching regulator circuits.
  • Ideal for motor control applications.
  • Designed for horizontal deflection in monochrome TVs.

BU810 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage of the BU810?

The maximum collector-emitter voltage (VCEO) is 400V.

What is the maximum collector current rating?

The maximum continuous collector current (IC) is 7A, with a peak current (ICM) of 10A.

What package is the BU810 available in?

The BU810 is available in a TO-220-3 through-hole package.

What is the maximum operating junction temperature?

The maximum operating junction temperature is 150°C.

What is the power dissipation rating?

The maximum power dissipation (Ptot) is 75W at a case temperature of 25°C.

Is the BU810 RoHS compliant?

The RoHS status is listed as RoHS3 Compliant but is unverified.

What are the typical switching times?

Typical switching times under resistive load are: turn-on 0.6µs, storage 1.5µs, fall 0.5µs.

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