BU931P NPN Darlington transistor with 400V collector-emitter breakdown voltage, 15A collector current, and 135W power dissipation. Housed in a TO-247-3 through-hole package.
Mfr Part #:

BU931P

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
NPN Darlington transistor with 400V collector-emitter breakdown voltage, 15A collector current, and 135W power dissipation. Housed in a TO-247-3 through-hole package.
Total Stock: 3,960 pcs
$ Price Range: $5.04

BU931P Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
1,980 pcs
1980 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
1,980 pcs
1980 pcs On Request 1 On Request On Request On Request On Request On Request

BU931P Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
Mounting Type
Operating Temperature
Power
Supplier Device Package
Tape & Reel
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage

BU931P Description

Short technical summary and product information.

BU931P is an NPN Darlington transistor manufactured by STMicroelectronics. It features a minimum collector-emitter breakdown voltage of 400V, maximum collector current of 15A, and maximum power dissipation of 135W. The DC current gain (hFE) is at least 300 at Ic=5A and Vce=10V, and the collector-emitter saturation voltage is 1.8V maximum at Ib=250mA and Ic=10A. The device has a maximum junction temperature rating of 175°C.

 

The Darlington configuration provides high current gain, making the BU931P suitable for high-power switching applications such as motor control, power inverters, and relay drivers. The transistor is mounted in a TO-247-3 through-hole package, which offers good thermal performance for heat sink attachment.

 

The component is RoHS3 compliant, MSL level 1 (unlimited), and REACH unaffected, though these compliance statuses are unverified from a datasheet. No datasheet is currently linked for this part.

BU931P Quick Information

Product Type: Darlington Transistor
Canonical Name: BU931P NPN Darlington Transistor
Subcategory: NPN Darlington

BU931P Compliance

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

BU931P Estimated Pricing

Qty Low High
1+ $5.04 $5.04

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

BU931P Features

  • NPN Darlington transistor with high gain.
  • 400V minimum collector-emitter breakdown voltage.
  • 15A maximum continuous collector current.
  • 135W power dissipation capability.
  • TO-247-3 through-hole package.

BU931P Applications

  • Ideal for high-power motor control circuits.
  • Used in power inverters and converters.
  • Suitable for relay and solenoid drivers.

BU931P FAQs

7 frequently asked questions generated from this part’s specifications.
What is the collector-emitter breakdown voltage of the BU931P?

400V minimum.

What package is the BU931P available in?

TO-247-3 through-hole package.

What is the maximum junction temperature of the BU931P?

175°C.

Is the BU931P RoHS compliant?

Yes, it is listed as RoHS3 compliant, but this status is unverified.

What is the maximum collector current of the BU931P?

15A.

What is the DC current gain (hFE) of the BU931P?

Minimum 300 at Ic=5A, Vce=10V.

What is the collector-emitter saturation voltage of the BU931P?

Maximum 1.8V at Ib=250mA, Ic=10A.

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