MJE5742G The ON Semiconductor MJE5742G is an NPN Silicon Power Darlington Transistor designed for high-voltage power switching in inductive circuits. It features a 400V collector-emitter voltage and 8A continuous collector current.
Mfr Part #:

MJE5742G

Available from 4 distributors
Mfr Name: On Semiconductor
On Semiconductor
The ON Semiconductor MJE5742G is an NPN Silicon Power Darlington Transistor designed for high-voltage power switching in inductive circuits. It features a 400V collector-emitter voltage and 8A continuous collector current.
Total Stock: 5,400 pcs
$ Price Range: $0.99

MJE5742G Available from 4 distributors

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Non-Authorised

MJE5742G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Base Current - Continuous
Base Current - Peak
Collector Current - Peak
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
Emitter-Base Voltage
IC (Maximum)
Maximum Lead Temperature for Soldering Purposes
Mounting Type
Operating Temperature
Operating and Storage Junction Temperature Range
PD (Maximum @ Tc=25 °C)
Pd (Maximum @ Ta=25 °C)
Power
Supplier Device Package
Thermal Resistance - Junction to Case
Thermal Resistance Junction-to-Ambient
Transistor Type
VCEO(sus) (Minimum @ IC = 50 mA, IB = 0)
VCEV (Maximum)
Vce Saturation (Max) @ Ib, Ic
Voltage

MJE5742G Description

Short technical summary and product information.

The MJE5742G from ON Semiconductor is an NPN Silicon Power Darlington Transistor engineered for demanding high-voltage power switching applications within inductive circuits. This device offers a robust 400V collector-emitter sustaining voltage and a continuous collector current rating of 8A, with a peak capability of 16A.

 

Key electrical characteristics include a high DC current gain (hFE) of 200 at 2A and 5V, and a Vce saturation of 3V maximum at 400mA and 8A. The transistor operates across a wide temperature range from -65°C to 150°C.

 

Packaged in a standard TO-220-3 configuration, the MJE5742G is designed for through-hole mounting. Its thermal resistance from junction-to-case is 1.25°C/W, and junction-to-ambient is 62.5°C/W, supporting efficient heat dissipation. The device is also noted as being Pb-Free and RoHS Compliant.

 

Applications for the MJE5742G include small engine ignition systems, switching regulators, inverters, solenoid and relay drivers, and motor controls, where its high voltage and current handling capabilities are beneficial.

MJE5742G Quick Information

Product Type: Transistor
Canonical Name: MJE5742G NPN Silicon Power Darlington Transistor
Subcategory: NPN Darlington

MJE5742G Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Pb-Free

MJE5742G Estimated Pricing

Qty Low High
1+ $0.99 $0.99

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

MJE5742G Features

  • NPN Darlington transistor for power switching.
  • 400V collector-emitter sustaining voltage.
  • 8A continuous collector current.
  • TO-220 package for through-hole mounting.
  • Pb-Free and RoHS Compliant.

MJE5742G Applications

  • Suitable for small engine ignition.
  • Used in switching regulators.
  • Applicable for inverter circuits.
  • Ideal for solenoid and relay drivers.
  • Designed for motor controls.

MJE5742G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the collector-emitter voltage for the MJE5742G?

The MJE5742G has a collector-emitter sustaining voltage of 400 Vdc.

What is the continuous collector current rating?

The continuous collector current is rated at 8 Adc.

What type of transistor is the MJE5742G?

It is an NPN Darlington transistor.

What is the operating temperature range?

The operating and storage junction temperature range is -65°C to +150°C.

What package is the MJE5742G supplied in?

The MJE5742G is supplied in a TO-220-3 package.

How is the MJE5742G mounted?

The MJE5742G is designed for through-hole mounting.

Is the MJE5742G RoHS compliant?

Yes, the MJE5742G is RoHS3 Compliant.

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