We use Cookies to give you best experience on our website. By using our website and services, you expressly agree to the placement of our performance, functionality and advertising cookies. Please see our Privacy Policy for more information.

Register or Sign In
Transistors / Power Bipolar Transistors / MJE340
Datasheets
MJE340 by:

COMPLEMENTARY SILICON POWER TRANSISTORS

Part Details for MJE340 by STMicroelectronics

Results Overview of MJE340 by STMicroelectronics

Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.

Applications Energy and Power Systems Transportation and Logistics Renewable Energy Automotive

MJE340 Information

MJE340 by STMicroelectronics is a Power Bipolar Transistor.
Power Bipolar Transistors are under the broader part category of Transistors.

A transistor is a small semiconductor device used to amplify, control, or create electrical signals. When selecting a transistor, factors such as voltage, current rating, gain, and power dissipation must be considered, with common types. Read more about Transistors on our Transistors part category page.

Price & Stock for MJE340

Part # Distributor Description Stock Price Buy
DISTI # 34X0710
Newark Bipolar (Bjt) Single Transistor, Npn, 300 V, 20.8 W, 500 Ma, 240 Rohs Compliant: Yes |Stmicroelectronics MJE340 RoHS: Compliant Min Qty: 1 Package Multiple: 1 Date Code: 1 Container: Bulk 12803
  • 1 $0.7100
  • 10 $0.5960
  • 100 $0.4320
  • 500 $0.3610
  • 1,000 $0.3140
  • 2,500 $0.2800
  • 10,000 $0.2400
$0.2400 / $0.7100 Buy Now
DISTI # MJE340
Avnet Americas Transistor GP BJT NPN 300V 0.5A 3-Pin SOT-32 Tube - Rail/Tube (Alt: MJE340) RoHS: Compliant Min Qty: 1 Package Multiple: 1 Lead time: 14 Weeks, 0 Days Container: Tube 5700
  • 1 $0.1970
  • 10 $0.1960
  • 30 $0.1950
  • 50 $0.1940
  • 100 $0.1930
$0.1930 / $0.1970 Buy Now
STMicroelectronics COMPLEMENTARY SILICON POWER TRANSISTORS RoHS: Compliant Min Qty: 1 4513
  • 1 $0.7700
  • 10 $0.4400
  • 100 $0.4000
  • 500 $0.3200
$0.3200 / $0.7700 Buy Now
Bristol Electronics   Min Qty: 5 2331
  • 5 $1.0969
  • 20 $0.7130
  • 72 $0.4113
  • 245 $0.3510
  • 529 $0.3071
  • 1,255 $0.2852
$0.2852 / $1.0969 Buy Now
DISTI # MJE340-ST
TME Transistor: NPN, bipolar, 300V, 0.5A, 20.8W, SOT32 Min Qty: 1 1018
  • 1 $0.6360
  • 10 $0.5610
  • 50 $0.4570
  • 100 $0.4110
  • 250 $0.3560
  • 500 $0.3200
  • 1,000 $0.2890
  • 5,000 $0.2690
$0.2690 / $0.6360 Buy Now
DISTI # MJE340
Avnet Silica Transistor GP BJT NPN 300V 0.5A 3-Pin SOT-32 Tube (Alt: MJE340) RoHS: Compliant Min Qty: 50 Package Multiple: 50 Lead time: 15 Weeks, 0 Days Silica - 18200
Buy Now
CHIPMALL.COM LIMITED 300V 20.8W 30@50mA,10V 500mA NPN SOT-32-3 Bipolar BJT ROHS 720
  • 1 $0.3027
$0.3027 Buy Now
DISTI # MJE340
EBV Elektronik Transistor GP BJT NPN 300V 0.5A 3-Pin SOT-32 Tube (Alt: MJE340) RoHS: Compliant Min Qty: 50 Package Multiple: 50 Lead time: 15 Weeks, 0 Days EBV - 0
Buy Now
LCSC 300V 20.8W 3050mA10V 500mA NPN SOT-32-3 Bipolar (BJT) ROHS 720
  • 1 $0.2910
  • 10 $0.2840
  • 30 $0.2796
  • 100 $0.2768
$0.2768 / $0.2910 Buy Now
Win Source Electronics TRANS NPN 300V 0.5A SOT-32 4238
  • 150 $0.3342
  • 365 $0.2743
  • 565 $0.2657
  • 780 $0.2571
  • 1,010 $0.2486
  • 1,350 $0.2228
$0.2228 / $0.3342 Buy Now

Part Details for MJE340

MJE340 CAD Models

  • Part Symbol

    Part Symbol

  • Footprint

    footprint

  • 3D Model

    3D Model

Available Download Formats

Sign in to download CAD models Register or Sign In

By downloading CAD models, you agree to our Terms & Conditions and Privacy Policy

MJE340 Part Data Attributes

Parametric Data
MJE340 STMicroelectronics
Buy Now Datasheet
Compare Parts:
MJE340 STMicroelectronics COMPLEMENTARY SILICON POWER TRANSISTORS
Rohs Code Yes
Part Life Cycle Code Active
Ihs Manufacturer STMICROELECTRONICS
Part Package Code SIP
Package Description TO-126, 3 PIN
Pin Count 3
Reach Compliance Code not_compliant
ECCN Code EAR99
HTS Code 8541.29.00.95
Factory Lead Time 14 Weeks
Samacsys Manufacturer STMicroelectronics
Case Connection ISOLATED
Collector Current-Max (IC) 0.5 A
Collector-Emitter Voltage-Max 300 V
Configuration SINGLE
DC Current Gain-Min (hFE) 30
JEDEC-95 Code TO-126
JESD-30 Code R-PSFM-T3
JESD-609 Code e3
Moisture Sensitivity Level 1
Number of Elements 1
Number of Terminals 3
Operating Temperature-Max 150 °C
Package Body Material PLASTIC/EPOXY
Package Shape RECTANGULAR
Package Style FLANGE MOUNT
Peak Reflow Temperature (Cel) 260
Polarity/Channel Type NPN
Power Dissipation Ambient-Max 20.8 W
Power Dissipation-Max (Abs) 20 W
Qualification Status Not Qualified
Surface Mount NO
Terminal Finish Matte Tin (Sn)
Terminal Form THROUGH-HOLE
Terminal Position SINGLE
Time@Peak Reflow Temperature-Max (s) 40
Transistor Application SWITCHING
Transistor Element Material SILICON

Alternate Parts for MJE340

This table gives cross-reference parts and alternative options found for MJE340. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of MJE340, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
MJE340 SPC Multicomp $0.2061 Power Bipolar Transistor, MJE340 vs MJE340
MJE340 General Transistor Corp Check for Price Power Bipolar Transistor, 0.5A I(C), NPN MJE340 vs MJE340
Part Number Manufacturer Composite Price Description Compare
MJE340 Fairchild Semiconductor Corporation Check for Price Power Bipolar Transistor, 0.5A I(C), 300V V(BR)CEO, 1-Element, NPN, Silicon, TO-126, Plastic/Epoxy, 3 Pin MJE340 vs MJE340
KSE340STU onsemi Check for Price NPN Epitaxial Silicon Transistor, TO-126-3, 1920-TUBE MJE340 vs KSE340STU
MJE340STU onsemi $0.2216 Medium Power NPN Bipolar Power Transistor, TO-126-3, 1920-TUBE MJE340 vs MJE340STU
MJE340 TT Electronics Resistors Check for Price Power Bipolar Transistor, 0.5A I(C), 300V V(BR)CEO, 1-Element, NPN, Silicon, Plastic/Epoxy, 3 Pin, TO-127VAR, 3 PIN MJE340 vs MJE340
MJE340G onsemi $0.2614 Medium Power NPN Bipolar Power Transistor, TO-225, 500-BLKBX MJE340 vs MJE340G
MJE340 Advanced Semiconductor Inc Check for Price Power Bipolar Transistor, 0.5A I(C), 1-Element, NPN, Silicon, TO-126, Plastic/Epoxy, 3 Pin, TO-126, 3 PIN MJE340 vs MJE340

MJE340 Related Parts

MJE340 Frequently Asked Questions (FAQ)

  • The MJE340 can operate safely between -55°C to 150°C, but the recommended operating temperature range is -40°C to 125°C for optimal performance.

  • To ensure linear operation, the MJE340 should be biased with a base-emitter voltage (Vbe) between 0.6V to 0.8V, and a collector-emitter voltage (Vce) that is at least 1V higher than the base-emitter voltage.

  • The maximum collector current rating for the MJE340 is 10A, but it's recommended to derate the current to 5A or less for continuous operation to ensure reliability and prevent overheating.

  • Yes, the MJE340 can be used as a switch. The switching characteristics are: turn-on time (ton) = 1.5μs, turn-off time (toff) = 2.5μs, and rise/fall times (tr/tf) = 0.5μs/0.5μs.

  • To protect the MJE340 from ESD, handle the device by the body, use an anti-static wrist strap or mat, and store the device in an anti-static bag or container.

Share by Email

Something went wrong!
Please enter a valid e-mail address
Email sent!
Recipient Email:
Add a recipient
Hello!

We are passing along some cool findings on Findchips sent to you from .

The data is for MJE340 by STMicroelectronics.
They’ve also added a data comparison to this page with by .

Click on the link below to check it out on Findchips.com.

Update Alert Settings for: MJE340 by STMicroelectronics

Select Manufacturer
Which Manufacturer of MJE340 would you like to use for your alert(s)?
Inventory Alert
  • Please alert me when MJE340 inventory levels are or equal to a quantity of from one of my selected distributors.
  • Also alert me for MJE340 alternates
    An alert is already set for the following part(s): . Any existing alert will be overwritten and set as a new alert.
No pricing information is available at this time
Pricing Alert
  • Please alert me when the single part price for MJE340 to
    $
    for at least parts from one of my selected distributors.
    Your Pricing Alert is set to expire on .
    Set this alert to expire in Update this alert to expire · Expired on
  • Also alert me for MJE340 alternates
    An alert is already set for the following part(s): . Any existing alert will be overwritten and set as a new alert.

Your part alert has been saved!

Alerts are triggered based off of individual distributors that you choose. Select your distributor(s) below.

Your part alert has been saved!

Register
Password Guidelines

Is at least 8 characters in length

Must include at least 3 of the following:

One lower-case character (a-z)

One upper-case character (A-Z)

One numeric character (0-9)

One special character (!#$%^&*)

Alert is successfully saved for MJE340.
Looks like you've reached your alert limit!  Please delete some alerts or contact us if you need help.

Compare MJE340 by STMicroelectronics

Select a part to compare:
Part Number Manufacturer Description
No result found.
Something went wrong!
Or search for a different part: