We use Cookies to give you the 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.

OK, Thanks

Notice for California users only:

This website or its third-party tools processes personal data.
In case of sale of your personal information, you may opt out by using the link: do not sell my personal information.

Otherwise, by continuing to use our website, you expressly agree to the use of personal information. To find out more about the categories of personal information collected and the purposes for which such information will be used, please refer to our Privacy Policy.

I understand


If you are a California resident, the California Consumer Privacy Act ("CCPA") provides you with the right to opt out of the 'sale' of your Personal Information. Please review our Privacy Policy for a more detailed description of how we collect, use, and share the Personal Information of California residents in operating our business, your privacy rights as a California resident, and how to exercise your rights as a California resident.

To request that Supplyframe may not 'sell' your Personal Information, please submit the form below. Please note that some transfers of your Personal Information may not be considered 'sales' and certain exemptions may apply under the CCPA. Your selection does not affect other use and sharing of your information as outlined in our Privacy Policy.

Supplyframe is committed to protecting and respecting your privacy, and we’ll only use your personal information to administer your account and to provide the products and services you requested from us.

By clicking submit below, you consent to allow Supplyframe to store and process the personal information submitted above to provide you the content requested.

Part Image

MJE340STU - onsemi

Description: Transistor GP NPN 300V 0.5A TO126

Download ECAD Model
Schematic symbol is unavailable for download
PCB footprint is unavailable for download
3D model is unavailable for download

PCB Footprints

MJE340STU - onsemi PCB footprint - Transistor Outline, Vertical - Transistor Outline, Vertical - MJE340STU-1
click to zoom

3D Models

MJE340STU - onsemi  - 3D model - Transistor Outline, Vertical - MJE340STU-1
click to zoom
  • Datasheet
  • Stock & Prices $ Check Stock & Prices
  • Part Number MJE340STU
  • Manufacturer onsemi
  • Pin Count 3
  • Part Category Transistor BJT NPN
  • Package Category Transistor Outline, Vertical
  • Footprint Name Transistor Outline, Vertical - MJE340STU-1
  • Released Date Nov 3, 2015
  • Pinout / Pin List Click Here (Member Only)

MJE340STU Details

  • Manufacturer Part Number:


  • Brand Name:

    ON Semiconductor

  • Pbfree Code:


  • Part Life Cycle Code:

    End Of Life

  • Manufacturer Package Code:


  • Reach Compliance Code:


  • ECCN Code:


  • Manufacturer:


  • Risk Rank:


  • Samacsys Modified On:

    2021-10-25 10:04:27

  • Collector Current-Max (IC):

    0.5 A

  • Collector-Emitter Voltage-Max:

    300 V

  • Configuration:


  • DC Current Gain-Min (hFE):


  • JEDEC-95 Code:


  • JESD-30 Code:


  • JESD-609 Code:


  • Number of Elements:


  • Number of Terminals:


  • Operating Temperature-Max:

    150 °C

  • Package Body Material:


  • Package Shape:


  • Package Style:


  • Polarity/Channel Type:


  • Power Dissipation-Max (Abs):

    20 W

  • Qualification Status:

    Not Qualified

  • Subcategory:

    Other Transistors

  • Surface Mount:


  • Terminal Finish:


  • Terminal Form:


  • Terminal Position:


  • Transistor Element Material:


Risk Rank: Design Risk

MJE340STU — onsemi
2.2 - Low Design Risk
Design Risk Rank is determined by in-depth analysis across multiple factors, including part availability, functional equivalents, lifecycle and more. Learn more →

Risk Rank

Risk Rank is a proprietary algorithm Supplyframe has developed to quantify component risk using multiple data points. This ranking helps engineers and buyers determine whether alternates should be sought for parts that are deemed as high risk.

Risk Rank Example

Risk Rank is determined by a combination of factors such as product lifecycle status, price & inventory volatility, current inventory availability and much more. Even the availability of manufacturer specifications, part documentation such as datasheets and reference designs have an impact on determining the overall riskiness of a part.

The risk is characterized across three product phases:

  • Design
  • Production
  • Long Term

We focus on the Design Phase on Component Search Engine in our evaluation of Risk.

Design Phase

The design phase of a product is at the beginning of the product lifecycle. This is when engineers are doing analysis of components in the marketplace, determining which specifications are most important for their design and assessing the cost impact of using this particular component. While this is early in the product lifecycle, choices at this point can severely impact a product much later on when the product is being made. Additionally, this stage is the one furthest from a product being made, which is why we focus on metrics of stability over time when determining Design Risk.

Risk Rank Breakdown

Trust Checks

Community Provided
System Verified
Community Approved

MJE340STU Overview

Use the download button to access the MJE340STU schematic symbol, PCB footprint, and 3D model.
MJE340STU by onsemi has a score of
To find more CAD model downloads similar to this part, try a partial part number search, like MJE34, or try a keyword search, such as Power Bipolar Transistors

Parts related to MJE340STU

Showing 0 results

MJE340STU Alternates

Showing results

Image Part Number Design Risk Rank Model
Part Image MJE340 SPC Multicomp

Power Bipolar Transistor,

Part Image KSE340STU onsemi

NPN Epitaxial Silicon Transistor, 1920-TUBE

Part Image MJE340 Continental Device India Ltd

Power Bipolar Transistor, 0.5A I(C), 300V V(BR)CEO, 1-Element, NPN, Silicon, TO-126, Plastic/Epoxy, 3 Pin

Part Image MJE340 Advanced Semiconductor Inc

Power Bipolar Transistor, 0.5A I(C), 1-Element, NPN, Silicon, TO-126, Plastic/Epoxy, 3 Pin, TO-126, 3 PIN

Part Image MJE340 Central Semiconductor Corp

Power Bipolar Transistor, 0.5A I(C), 300V V(BR)CEO, 1-Element, NPN, Silicon, TO-126, Plastic/Epoxy, 3 Pin,

For a full list of alternate parts for MJE340STU, check out FindChips.com