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Legacy Personal Blogs 4 Transistors to put your Parts Kit
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Engagement
  • Author Author: baldengineer
  • Date Created: 22 Apr 2014 9:57 PM Date Created
  • Views 450 views
  • Likes 0 likes
  • Comments 4 comments
  • mosfet
  • transistors
  • darlington
  • pair
  • bjt
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Recommended

4 Transistors to put your Parts Kit

baldengineer
baldengineer
22 Apr 2014

image

The other day I was working on a project in the TechShop in Austin.  A recent student of my Arduino Programming class asked me how to make his motor spin.  So I started to talk about needing a transistor and they asked the question "what is the BEST transistor?"  Since "best" is subjective, I thought maybe I would give a list of the "best transistors" to keep in your parts bin, for any occasion.

 

So from baldengineer.com, The best 4 transistors to keep in your parts kit.

 

For the tl;dr, the list is:

  1. BJT, NPN, 2N3904
  2. BJT, PNP, 2N3906
  3. BJT, NPN (Power), TIP120
  4. MOSFET, N-Channel, FQP30N06L
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Top Comments

  • DAB
    DAB over 9 years ago +1
    I would add the venerable 2N2222. Its a staple for quick designs. DAB
  • COMPACT
    COMPACT over 9 years ago in reply to DAB

    DAB, We're showing our vintages!

    How about venerable BC548, BC558, BC327, BC337, BD139, BD140, BD640, TIP32, 2N3055 and 2N7000?

     

    James,

    Be careful with MOSFETS - they can be really easy to blow up!

    Make sure you follow ESD (Electro Static Discharge) procedures.

     

    Very Compact

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  • DAB
    DAB over 9 years ago

    I would add the venerable 2N2222.

    Its a staple for quick designs.

     

    DAB

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  • baldengineer
    baldengineer over 9 years ago in reply to michaelkellett

    Yup.  I mixed up high-side and low-side originally, it is fixed now.

     

    Thanks

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  • michaelkellett
    michaelkellett over 9 years ago

    In your blog reached by the link you incorrectly define high and low side switch.

     

    "NPN Transistors are used in high-side switch circuits. This means whatever you want to control is connected between the high voltage and the collector of the transistor."

     

    Here's  a link to an article with some useful information, including  a correct definition:

     

    "The definition of a high-side load switch is that it is controlled by an external enable signal, and connects or disconnects a power source (battery or adaptor) to a given load. Compared to a low-side load switch, a high-side switch sources current to the load, while the low-side type connects or disconnects the load to ground, and therefore sinks current from the load."

     

    MK

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