Connect with us

TO220 LEDs?

Discussion in 'Lighting' started by Clive Mitchell, Sep 4, 2005.

Scroll to continue with content
  1. I browsed the new Maplin (UK) catalogue today and saw some 1W LEDs in a
    TO 220 package. For the uninitiated these are the same package used for
    many high power transistors, triacs, voltage regulators and other stuff,
    and look like a small rectangle with a heatsink tab on one end and two
    or three legs sticking out the other.

    I suppose this makes sense since it facilitates easy fixing to a
    standard heatsink with a wide range of standard insulating shims and
    screw isolators to ensure isolation from the heatsink. I can imagine
    these being ideal for use in long strips where a thin PCB runs under the
    legs making connection. It should allow quite dense linear packing if
    the heatsink is up to the job.
     
  2. What is the direction of the light relative to the rest of
    the package. Fro the "top" or the "front"?

    --
    Vic Roberts
    http://www.RobertsResearchInc.com
    To reply via e-mail:
    replace xxx with vdr in the Reply to: address
    or use e-mail address listed at the Web site.

    This information is provided for educational purposes only.
    It may not be used in any publication or posted on any Web
    site without written permission.
     
  3. If you can imagine the area where the device data is normally printed,
    then that's where the light is emitted.
     
  4. Thanks. I would call that the "front" since the heat sink is
    on the back :)

    --
    Vic Roberts
    http://www.RobertsResearchInc.com
    To reply via e-mail:
    replace xxx with vdr in the Reply to: address
    or use e-mail address listed at the Web site.

    This information is provided for educational purposes only.
    It may not be used in any publication or posted on any Web
    site without written permission.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-