Which SMT Led I have to use in this proyect?

Discussion in 'General Electronics Chat' started by LucasSaavedra, Feb 1, 2017.

  1. LucasSaavedra

    Thread Starter New Member

    Feb 1, 2017
    2
    0
    Hi, how are you ?
    I am working in a proyect where I have to make a Up row and Cross like there is in the next photo:

    [​IMG]

    I wanted to do it with SMD components. And the question is, which Led I have to use? I know that there are differentes packages and differents light intensity between them and I need to know which is the best for this work.
     
  2. #12

    Expert

    Nov 30, 2010
    18,076
    9,681
  3. LucasSaavedra

    Thread Starter New Member

    Feb 1, 2017
    2
    0
    Yes, I know. But the packages give different light intensity and I need one that make possible see the row or cross without problems. Think that this goes above a little black window.

    Which package is the best option for something like this.

    Sorry for my english, really.
     
  4. #12

    Expert

    Nov 30, 2010
    18,076
    9,681
    A person can see any LED that is lit if they are inside a building. You have offered no numbers for the brightness you want and no description of where the display will be, therefore I have no numbers for which one to buy. You have choices from 0.16 milli-candela which is (1/6000th of a candle brightness) up to 41 candles worth of brightness in a tiny little spot about a millimeter square. I would guess about 1000 milli-candelas. That is the brightness of one candle in a square millimeter. Then you can make it dimmer by supplying less current if you want to.
     
  5. dunderdejv

    New Member

    Feb 1, 2017
    1
    0
    hmm
     
  6. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    5,394
    1,194
    This is something YOU need to choose based on the details of YOUR application..
    Based on the information you have given so far ANY LED will work.. (Because you haven't given ANY details)

    Do you have a standard for "illumination" that you must follow where it may state the light must be visible from X distance and Y degrees off center or must provide 100 lumens or something?

    In reality it might be best to buy a couple and do some real field trials or tests in your lab to see what will work for YOUR application.
     
Loading...