Home

Products

Discrete Semiconductor Products

Transistors

Bipolar (BJT)

Single Bipolar Transistors

BU931T

Banner
productimage

BU931T

TRANS NPN DARL 400V 10A TO220

Manufacturer: STMicroelectronics

Categories: Single Bipolar Transistors

Quality Control: Learn More

The STMicroelectronics BU931T is an NPN Darlington bipolar junction transistor designed for high-voltage and high-current applications. This component features a collector-emitter breakdown voltage of 400 V and a maximum continuous collector current of 10 A. With a power dissipation capability of 125 W and a junction temperature rating of 175°C, it is suitable for demanding thermal environments. The BU931T offers a minimum DC current gain (hFE) of 300 at 5A collector current and 10V collector-emitter voltage. Its saturation voltage (Vce Sat) is a maximum of 1.8V at 250mA base current and 10A collector current. This device is presented in a TO-220-3 through-hole package, facilitating robust mounting. The BU931T is qualified to AEC-Q101 standards, indicating its suitability for automotive applications.

Additional Information

Series: -RoHS Status: ROHS3 CompliantManufacturer Lead Time: No lead time information availableProduct Status: ObsoletePackaging: TubeDatasheet:
Technical Details:
PackagingTube
Package / CaseTO-220-3
Mounting TypeThrough Hole
Transistor TypeNPN - Darlington
Operating Temperature175°C (TJ)
Vce Saturation (Max) @ Ib, Ic1.8V @ 250mA, 10A
Current - Collector Cutoff (Max)100µA
DC Current Gain (hFE) (Min) @ Ic, Vce300 @ 5A, 10V
Frequency - Transition-
Supplier Device PackageTO-220
GradeAutomotive
Current - Collector (Ic) (Max)10 A
Voltage - Collector Emitter Breakdown (Max)400 V
Power - Max125 W
QualificationAEC-Q101

Request a Quote

Name (required)

Phone (required)

Work Email (required)

Country (required)

Company Name (required)

CAPTCHA

By providing a telephone number and submitting the form, you are consenting to be contacted by SMS text message and agreeing to our Privacy Policy. Message frequency may vary. Message and data rates may apply. Reply STOP to opt out of further messaging. Reply HELP for more information.
Clients Also Buy
STMicroelectronics FAQs

STMicroelectronics manufactures a broad range of semiconductor components, with a strong focus on microcontrollers, power electronics, and analog technologies.

STMicroelectronics’ core components include:

  • Microcontrollers (MCUs) and microprocessors (MPUs)
  • Power semiconductors (MOSFETs, IGBTs, SiC devices)
  • Analog and mixed-signal ICs
  • Sensors (MEMS and environmental sensors)
  • Automotive ICs (ADAS, powertrain, and body electronics)
  • Discrete components (diodes, transistors, rectifiers)
  • Connectivity solutions (wireless, RF, and interface ICs)

STMicroelectronics specializes in energy-efficient, high-performance solutions for embedded systems and power management applications.

STMicroelectronics serves industries that require energy efficiency, embedded control, and advanced sensing technologies.

STMicroelectronics’ key industries include:

These industries rely on STMicroelectronics for power efficiency, system integration, and reliable semiconductor performance.

STMicroelectronics is known for microcontrollers, power electronics, and sensor technologies.

Key STMicroelectronics product lines include:

  • STM32 series - ARM-based microcontrollers for embedded applications
  • STM8 series - 8-bit microcontrollers for cost-sensitive designs
  • Stellar automotive MCUs - next-generation microcontrollers for vehicle architectures
  • STSPIN series - motor drivers and motion control ICs
  • VIPer series - power conversion ICs for offline power supplies
  • STMems (MEMS sensors) - motion, environmental, and pressure sensor
  • Automotive SiC portfolio - silicon carbide devices for EV power systems
  • ST25 series - NFC/RFID solutions for contactless applications
  • STGAP3S - next-generation gate driver for power electronics
Frequently Asked Questions

As a full line supplier, we specialize in sourcing obsolete and hard to find electronic components for your projects.

After we receive your request submission, one of our account executives will reach out to your team to gather more information about your project requirements and ensure we tailor the order to your needs.

Once requirements such as date codes, quantities, target prices, testing requirements, and more are discussed, our purchasing team will secure stock through Microchip USA’s direct access to manufacturing partners’ excess inventory lists.

Our operations teams will handle logistics and fulfillment to ensure supply chain continuity, and our support team will provide clear communication throughout the process.

Our net terms for electronic component sourcing are flexible and vary by order. Our account executives will work with you to ensure our terms meet your company’s needs. We also offer scheduled shipments and inventory management solutions to ensure a steady supply of electronic components, maintain cash flow, and maximize warranty periods. We always offer a warranty on all tested parts. See our sales terms and conditions for more information.

We partner with industry-leading AS6171 & AS6081-certified third party testing labs to mitigate risk and support a wide array of end uses for your company’s requirements. Testing includes but isn’t limited to: Decapsulation & Internal Dye Verification. X-Ray Inspection & Analysis, External Visual Inspection, Surface Texture Analysis (SEM), and Electrical Pin Correlation.

Industry News
Component Articles