BU208A BU208A is a high voltage fast-switching NPN power transistor from STMicroelectronics. It features 700V VCEO, 8A collector current, and 150W power dissipation in a TO-3 package.
Mfr Part #:

BU208A

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
BU208A is a high voltage fast-switching NPN power transistor from STMicroelectronics. It features 700V VCEO, 8A collector current, and 150W power dissipation in a TO-3 package.
Total Stock: 17 pcs
$ Price Range: $1.53

BU208A Available from 1 distributor

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BU208A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Base - Emitter Saturation Voltage
Collector Peak Current
Collector-Emitter Sustaining Voltage
Collector-Emitter Voltage (VCE) VBE=0
Current
Emitter-Base Voltage (VEB) IC=0
Fall Time (Inductive Load)
Frequency
Mounting Type
Operating Temperature
Power
Storage Temperature
Storage Time (Inductive Load)
Supplier Device Package
Tape & Reel
Thermal Resistance Junction-Case
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage

BU208A Description

Short technical summary and product information.

The BU208A is a high voltage fast-switching NPN power transistor manufactured by STMicroelectronics using Multiepitaxial Mesa technology with a Hollow Emitter structure to enhance switching speeds.

 

Key electrical specifications include a collector-emitter sustaining voltage (VCEO(sus)) of 700V, a maximum collector current of 8A (15A peak), and a total power dissipation of 150W at 25°C case temperature. The device offers a transition frequency of 7 MHz and typical inductive load storage time of 7 µs with fall time of 550 ns.

 

The transistor is housed in a TO-3 (TO-204AA) metal package designed for chassis mount installation. It supports an operating junction temperature range up to 175°C and has a thermal resistance junction-to-case of 1°C/W.

 

This device is suitable for horizontal deflection circuits in color televisions and other high voltage switching applications requiring fast switching performance.

BU208A Quick Information

Product Type: Bipolar Junction Transistor (BJT) - Single
Canonical Name: BU208A High Voltage Fast-Switching NPN Power Transistor
Subcategory: High Voltage Fast-Switching

BU208A Compliance

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

BU208A Estimated Pricing

Qty Low High
500+ $1.53 $1.53

Estimated market price range - modelled values for guidance only, not live distributor offers.

BU208A Features

  • 700V collector-emitter sustaining voltage.
  • 8A continuous collector current rating.
  • 150W power dissipation at 25°C.
  • Fast switching with 550 ns fall time.
  • TO-3 chassis mount metal package.

BU208A Applications

  • Horizontal deflection circuits in color TVs.
  • High voltage power switching applications.
  • Switch mode power supply designs.
  • Industrial power control systems.

BU208A FAQs

5 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage for the BU208A?

The maximum collector-emitter voltage with base open (VCEO) is 700V, and with base-emitter shorted (VCES) it is 1500V.

What is the maximum collector current rating of the BU208A?

The maximum continuous collector current is 8A, with a peak current capability of 15A for pulses less than 5 ms.

What package does the BU208A come in?

The BU208A is available in a TO-3 (TO-204AA) metal package for chassis mount installation.

What is the operating temperature range for the BU208A?

The maximum operating junction temperature is 175°C, and the storage temperature range is -65°C to 175°C.

Is the BU208A RoHS compliant?

The BU208A is listed as RoHS3 compliant, though this information is unverified from the datasheet.

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