2N4240 The 2N4240 is an NPN bipolar junction transistor from Microchip Technology, rated for 500V collector-emitter voltage and 2A collector current with 35W power dissipation.
Mfr Part #:

2N4240

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
The 2N4240 is an NPN bipolar junction transistor from Microchip Technology, rated for 500V collector-emitter voltage and 2A collector current with 35W power dissipation.
Total Stock: 1,414 pcs
$ Price Range: $42.02

2N4240 Available from 1 distributor

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2N4240 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

2N4240 Description

Short technical summary and product information.

The 2N4240 is a high-voltage NPN bipolar junction transistor manufactured by Microchip Technology. It features a maximum collector-emitter voltage of 500V and a continuous collector current rating of 2A, with a power dissipation of 35W. The device offers a minimum DC current gain (hFE) of 30 at 750mA collector current and 10V Vce, and a low saturation voltage of 1V at 75mA base current and 750mA collector current.

 

This transistor is designed for through-hole mounting and is supplied in a TO-66 package (also known as TO-213AA). The operating junction temperature range spans from -65°C to 200°C, making it suitable for demanding environments. Typical applications include switching and amplification in power supply circuits, motor control, and other high-voltage industrial systems.

2N4240 Quick Information

Product Type: Bipolar Junction Transistor (BJT)
Canonical Name: 2N4240 NPN Bipolar Transistor
Subcategory: Single BJT

2N4240 Compliance

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

2N4240 Estimated Pricing

Qty Low High
1+ $42.02 $42.02

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

2N4240 Features

  • NPN bipolar junction transistor design.
  • Rated for 500V collector-emitter voltage.
  • Supports 2A continuous collector current.
  • 35W power dissipation capability.
  • Through-hole TO-66 package for easy mounting.

2N4240 Applications

  • Used in high-voltage switching power supplies.
  • Ideal for motor control circuits.
  • Suitable for linear amplifier stages.
  • Applied in industrial automation systems.

2N4240 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage of the 2N4240?

500V.

What is the maximum collector current?

2A.

What is the power dissipation rating?

35W.

What is the DC current gain (hFE)?

Minimum 30 at 750mA collector current and 10V Vce.

What package does the 2N4240 come in?

TO-66 (TO-213AA) through-hole package.

What is the operating temperature range?

-65°C to 200°C junction temperature.

Is the 2N4240 RoHS compliant?

RoHS3 compliant according to existing database, but this is unverified. Verify with manufacturer.

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