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BUL742CFP The BUL742CFP is a high voltage fast-switching NPN power transistor from STMicroelectronics. It features a 400V collector-emitter voltage, 4A collector current, and 30W power dissipation in a TO-220FP through-hole package.
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BUL742CFP

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Mfr Name: STMicroelectronics
STMicroelectronics
The BUL742CFP is a high voltage fast-switching NPN power transistor from STMicroelectronics. It features a 400V collector-emitter voltage, 4A collector current, and 30W power dissipation in a TO-220FP through-hole package.
✓ Total Stock: 1,000 pcs

BUL742CFP Available from 1 distributor

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BUL742CFP 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
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage
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BUL742CFP Description

Short technical summary and product information.

The STMicroelectronics BUL742CFP is a high voltage fast-switching NPN power transistor designed for efficient power conversion. It is manufactured using high voltage multi-epitaxial planar technology, providing high switching speeds and high voltage capability.

 

Key electrical specifications include a collector-emitter voltage (VCEO) of 400V, a collector-emitter voltage (VCES) of 1050V, and a collector current (IC) of 4A (8A peak). The device offers a DC current gain (hFE) range of 48 to 100 at 100mA and a low collector-emitter saturation voltage of 0.5V at 1A. Switching performance is characterized by a typical storage time of 2.4µs and a fall time of 350ns.

 

The transistor is housed in a TO-220FP (TO-220-3 Full Pack) through-hole package, which provides 1500V RMS isolation from leads to heatsink. The junction-to-case thermal resistance is 4.17°C/W, and the maximum operating junction temperature is 150°C. This component is suitable for applications such as electronic ballasts for fluorescent lighting and switch mode power supplies.

BUL742CFP Quick Information

Product Type: Bipolar Junction Transistor (BJT)
Canonical Name: STMicroelectronics BUL742CFP NPN High Voltage Fast-Switching Power Transistor
Subcategory: High Voltage Fast-Switching

BUL742CFP Compliance

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

BUL742CFP Features

  • High voltage NPN power transistor.
  • 400V collector-emitter voltage rating.
  • 4A continuous collector current capability.
  • Fast switching with 350ns fall time.
  • Isolated TO-220FP through-hole package.

BUL742CFP Applications

  • Electronic ballast for fluorescent lighting.
  • Switch mode power supply circuits.
  • High voltage power switching applications.

BUL742CFP FAQs

7 frequently asked questions generated from this part’s specifications.
What is the collector-emitter voltage (VCEO) of the BUL742CFP?

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

What is the maximum collector current rating?

The maximum continuous collector current (IC) is 4A, with a peak current (ICM) of 8A.

What package type is the BUL742CFP available in?

The BUL742CFP is available in a TO-220-3 Full Pack (TO-220FP) through-hole package.

What is the maximum operating junction temperature?

The maximum operating junction temperature (Tj) is 150°C.

Is the BUL742CFP RoHS compliant?

The RoHS status is listed as RoHS3 Compliant, but this is unverified.

What is the power dissipation of this transistor?

The total power dissipation (Ptot) at Tc=25°C is 30W for the TO-220FP package.

What are the typical applications for the BUL742CFP?

Typical applications include electronic ballasts for fluorescent lighting and switch mode power supplies.

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