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BU941P BU941P is an NPN Darlington power transistor from STMicroelectronics. It features a maximum collector-emitter voltage of 400V, collector current of 15A, and a DC current gain of 300 at 5A, 10V.
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BU941P

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
BU941P is an NPN Darlington power transistor from STMicroelectronics. It features a maximum collector-emitter voltage of 400V, collector current of 15A, and a DC current gain of 300 at 5A, 10V.
✓ Total Stock: 3,600 pcs
$ Price Range: $1.63

BU941P Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
3,600 pcs
On Request
3600 pcs On Request 1 On Request On Request On Request On Request On Request
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BU941P 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
Storage Temperature
Supplier Device Package
Tape & Reel
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage
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BU941P Description

Short technical summary and product information.

The BU941P is an NPN Darlington power transistor manufactured by STMicroelectronics. It is designed for high-voltage switching applications, particularly electronic ignition systems. The device integrates an antiparallel collector-emitter diode for improved ruggedness.

 

Key electrical ratings include a maximum collector-emitter voltage (VCEO) of 400V, a collector-emitter voltage with base shorted (VCES) of 500V, and a continuous collector current of 15A (peak 30A). The DC current gain (hFE) is a minimum of 300 at IC=5A, VCE=10V. Collector-emitter saturation voltage is typically 1.6V at IC=8A, IB=100mA.

 

The BU941P is housed in a TO-247-3 through-hole package, offering a maximum power dissipation of 155W at case temperature 25°C. The operating junction temperature ranges up to 175°C, with a thermal resistance junction-to-case of 0.97°C/W.

 

Typical applications include high-voltage ignition coil drivers and high-ruggedness electronic ignition systems. The device is suitable for inductive load switching due to its robust design and switching characteristics, with storage time up to 15µs and fall time as low as 0.5µs.

BU941P Quick Information

Product Type: NPN Darlington Transistor
Canonical Name: BU941P NPN Darlington Transistor 400V 15A TO-247-3
Subcategory: NPN Darlington

BU941P Compliance

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

BU941P Estimated Pricing

Qty Low High
600+ $1.63 $1.63

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

BU941P Features

  • NPN Darlington with integrated antiparallel diode.
  • Maximum collector-emitter voltage of 400V.
  • Collector current rating up to 15A.
  • DC current gain of 300 at 5A, 10V.
  • Operates at junction temperature up to 175°C.

BU941P Applications

  • High voltage ignition coil driver.
  • High ruggedness electronic ignition systems.
  • Inductive load switching applications.

BU941P FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage of the BU941P?

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

What is the package type of the BU941P?

TO-247-3 through-hole package.

What is the maximum operating junction temperature?

175°C.

Is the BU941P RoHS compliant?

According to available data, it is RoHS3 compliant, but this is unverified.

What is the DC current gain (hFE) of the BU941P?

Minimum 300 at IC=5A, VCE=10V.

What is the collector-emitter saturation voltage?

Maximum 1.6V at IC=8A, IB=100mA.

What is the maximum power dissipation?

155W at case temperature 25°C.

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