5mm led's forward v 3.6

Discussion in 'Homework Help' started by pudhiyavan, Feb 24, 2009.

  1. pudhiyavan

    Thread Starter New Member

    Nov 25, 2008
    8
    0
    Item Symbol Condition Min Typ Max Unit
    DC forward voltage VF IF =100mA 2.8 3.6 4.0 V
    DC reverse current IR VR =5V - - 100 μA
    Lumen Rating lm IF =100mA 10 15 20 lm
    Color Temperature CT IF =100mA - - 10000 K

    so i have connected all of them in in series of two
    i.e 2 x 5 array uses 10 LEDs exactly
    each 27 ohms resistor,here can i connect trying 1/2w resistor in each row? is that valid?

    can anyone pass better suggestion pls
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    What is the operating voltage applied to each string of LED's?
     
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