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STW2040 The STW2040 is a high voltage, fast-switching NPN power transistor manufactured by STMicroelectronics. It offers a high voltage capability and high DC current gain, suitable for switching mode power supplies.
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STW2040

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STW2040 is a high voltage, fast-switching NPN power transistor manufactured by STMicroelectronics. It offers a high voltage capability and high DC current gain, suitable for switching mode power supplies.
✓ Total Stock: 610 pcs
$ Price Range: $0.51

STW2040 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
Optech Co.,Limited ✓
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610 pcs
On Request
610 pcs On Request 1 On Request On Request 11+ On Request On Request
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STW2040 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
SVHC Present
Storage Temperature
Supplier Device Package
Supplier Package
Transistor Type
Turn On Time
Vce Saturation (Max) @ Ib, Ic
Voltage
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STW2040 Description

Short technical summary and product information.

The STW2040 is an NPN power transistor designed for high voltage and fast-switching applications. Manufactured using diffused collector in planar technology, it features a high voltage capability of up to 500V (VCEO) and a continuous collector current rating of 20A, with a peak current capability of 30A.

 

Key electrical characteristics include a maximum total power dissipation of 125W at 25°C and a thermal resistance junction-to-case of 1°C/W. The transistor exhibits a minimum DC current gain (hFE) of 15 at 6A and 5V. Saturation voltages are also specified, with VCE(sat) at a maximum of 0.5V for 6A collector current and 1.2A base current.

 

Packaged in a TO-247-3 through-hole configuration, the STW2040 is suitable for applications requiring robust power handling. Its operating junction temperature can reach up to 150°C. The device is designed for reliable operation with minimum lot-to-lot spread, making it a dependable choice for demanding power supply designs.

STW2040 Quick Information

Product Type: NPN Power Transistor
Canonical Name: STW2040 High Voltage Fast-Switching NPN Power Transistor
Subcategory: Single NPN

STW2040 Compliance

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

STW2040 Estimated Pricing

Qty Low High
1+ $0.51 $0.51

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

STW2040 Features

  • High voltage capability up to 500V.
  • Continuous collector current of 20A.
  • Maximum power dissipation of 125W.
  • Fast-switching NPN power transistor.
  • TO-247-3 through-hole package.

STW2040 Applications

  • Used in switching mode power supplies.
  • Ideal for high-voltage power converters.
  • Fast switching for efficient power conversion.
  • High current handling for power loads.
  • NPN transistor for power switching circuits.

STW2040 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage for the STW2040?

The maximum collector-emitter voltage (VCES) for the STW2040 is 700V when VCE = 0, and 500V when IB = 0 (VCEO).

What is the maximum continuous collector current of the STW2040?

The STW2040 has a maximum continuous collector current (IC) of 20A.

What is the power dissipation rating for the STW2040?

The total power dissipation (PTOT) for the STW2040 is 125W at a case temperature of 25°C.

What is the operating temperature range for the STW2040?

The maximum operating junction temperature (TJ) for the STW2040 is 150°C.

What package type is the STW2040 supplied in?

The STW2040 is supplied in a TO-247-3 package.

What is the DC current gain (hFE) of the STW2040?

The DC current gain (hFE) for the STW2040 is a minimum of 15 at IC = 6A and VCE = 5V.

What is the Vce Saturation voltage for the STW2040?

The Vce Saturation voltage (VCE(sat)) for the STW2040 is a maximum of 0.5V at IB = 1.2A and IC = 6A.

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