MJE340 The MJE340 is an NPN epitaxial silicon power transistor from STMicroelectronics. It features a 300V collector-emitter voltage and a 500mA continuous collector current.
Mfr Part #:

MJE340

Available from 5 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The MJE340 is an NPN epitaxial silicon power transistor from STMicroelectronics. It features a 300V collector-emitter voltage and a 500mA continuous collector current.
✓ Total Stock: 90,597 pcs
$ Price Range: $0.99

MJE340 Available from 5 distributors

✓ Authorised
✓ Non-Authorised

MJE340 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
Transistor Type
Voltage

MJE340 Description

Short technical summary and product information.

The MJE340 is an NPN epitaxial silicon power transistor designed for high voltage general purpose applications. Manufactured by STMicroelectronics, this component offers a maximum collector-emitter voltage (VCEO) of 300V and a continuous collector current (IC) of 500mA.

 

With a power dissipation capability of up to 20W at 25°C case temperature, the MJE340 is suitable for medium power applications. It operates within a junction temperature range of -65°C to +150°C. The transistor is housed in a TO-126 (TO-225AA) plastic package, designed for through-hole mounting.

 

Key electrical characteristics include a minimum DC current gain (hFE) of 30 at 50mA and 10V, a collector-emitter saturation voltage (VCE(SAT)) of 0.5V maximum at 100mA, and a gain-bandwidth product (fT) of 10MHz minimum. The device also features breakdown voltages of 300V for VCEO(sus) and 7V for BVEBO.

MJE340 Quick Information

Product Type: Power Transistor
Canonical Name: MJE340 NPN Epitaxial Silicon Power Transistor
Subcategory: NPN

MJE340 Compliance

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

MJE340 Estimated Pricing

Qty Low High
1+ $0.99 $0.99

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

MJE340 Features

  • NPN Epitaxial Silicon Power Transistor
  • 300V Collector-Emitter Voltage (VCEO)
  • 500mA Continuous Collector Current (IC)
  • 20W Power Dissipation (Tc=25°C)
  • TO-126 Through-Hole Package

MJE340 Applications

  • High-voltage switching applications
  • Power amplification circuits
  • Automotive and industrial electronics
  • High-voltage relay drivers

MJE340 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage for the MJE340?

The maximum collector-emitter voltage (VCEO) for the MJE340 is 300V.

What is the continuous collector current rating of the MJE340?

The MJE340 has a continuous collector current rating of 500mA.

What is the power dissipation of the MJE340 at 25°C case temperature?

The power dissipation of the MJE340 is 20W at 25°C case temperature.

What is the operating temperature range for the MJE340?

The operating and storage junction temperature range for the MJE340 is -65°C to +150°C.

What is the DC Current Gain (hFE) of the MJE340?

The DC Current Gain (hFE) of the MJE340 is a minimum of 30 and a maximum of 240 at 50mA collector current and 10V collector-emitter voltage.

What package type is the MJE340 supplied in?

The MJE340 is supplied in a TO-126 (TO-225AA) plastic package.

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