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BU931R

The BU931R is an NPN power transistor from STMicroelectronics, featuring a TO-3 package and high voltage capabilities. It is designed for applications like automotive ignition and inverter circuits.

✓ Total Stock: 3 pcs

$ Price Range: $0.77

BU931R Available from 1 distributor

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✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Partservice ✓ Non-Authorised Inventory information	3 pcs On Request	3 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

BU931R Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	STMicroelectronics
Junction Temperature	200°C
Power Dissipation	125W
Storage Temperature	-40 to 200°C

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BU931R Description

Short technical summary and product information.

The BU931R is a Silicon NPN Power Transistor manufactured by STMicroelectronics, housed in a TO-3 package. It is designed for demanding applications such as automotive ignition circuits and inverter circuits for motor controls.

Key electrical specifications include a collector-emitter voltage (VCEO) of up to 450V and a continuous collector current (IC) of 15A, with a peak current capability of 30A. The device offers a maximum power dissipation of 175W at a case temperature of 125°C, and a junction temperature up to 200°C.

Thermal characteristics show a low thermal resistance from junction to case of 1.0°C/W, facilitating efficient heat dissipation. The transistor exhibits a typical DC current gain (hFE) of 300 at 5A collector current and 10V collector-emitter voltage. Switching characteristics include a storage time of 15µs and a fall time of 0.5µs under specified test conditions.

This component is suitable for power switching and amplification tasks where high voltage and current handling are required. Its robust TO-3 package is well-suited for through-hole mounting in power applications.

BU931R Quick Information

Product Type: NPN Transistor

Canonical Name: BU931R Silicon NPN Power Transistor

Subcategory: NPN

BU931R Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

BU931R Estimated Pricing

Qty	Low	High
1+	$0.77	$0.77

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

BU931R Features

NPN Silicon Power Transistor
450V Collector-Emitter Voltage
15A Continuous Collector Current
TO-3 Package for Through-Hole Mounting
Designed for Automotive Applications

BU931R Applications

Automotive ignition circuits
Inverter circuits for motor controls
Power switching applications
High voltage amplification

BU931R FAQs

6 frequently asked questions generated from this part’s specifications.

What is the maximum collector-emitter voltage for the BU931R?

The maximum collector-emitter voltage (VCEO) for the BU931R is 450V.

What is the maximum continuous collector current of the BU931R?

The BU931R can handle a maximum continuous collector current (IC) of 15A.

What type of package does the BU931R use?

The BU931R is supplied in a TO-3 package.

What is the maximum power dissipation for the BU931R?

The maximum power dissipation (PT) for the BU931R is 175W at a case temperature of 125°C.

What is the typical DC current gain (hFE) of the BU931R?

The typical DC current gain (hFE) for the BU931R is 300 when measured at 5A collector current and 10V collector-emitter voltage.

What are the main applications for the BU931R transistor?

The BU931R is designed for automotive ignition applications and inverter circuits for motor controls.