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Description: We all know that you can never get too many LEDs. Don't worry, we've got you covered. This is a pack of basic red, yellow, blue and green 5mm LEDs (5 of each) all conveniently packaged in a nice reusable ESD safe bag.

Includes:

  • 5x - Basic Red
  • 5x - Basic Yellow
  • 5x - Basic Blue
  • 5x - Basic Green

Documents:

Comments 5 comments

  • How much current should I give these LEDs? The info sheet (both the one here and the one that comes in the antistatic bag with these LEDs) only gives the forward voltage drop.

    • I tested them using progressively larger resistors my Resistor Kit (starting with one calculated to give ~10 mA) and my multimeter measuring the voltage dropped by the resistor, with 5 V supplied by my RedBoard.

      Red
      Very bright at 9 mA (3.05 V over 330 Ω resistor).
      Pretty bright at 3 mA (3.19 V over 1 kΩ resistor).
      Bright enough for a dim indicator at 71 μA (3.36 V over 47 kΩ resistor).
      Very dim at 10 μA (3.43 V over 330 kΩ resistor). Somehow the first LED I used burned out after this one, and would not light even when I went back to smaller resistors. (Maybe my alligator clips touched accidentally.)
      I replaced it with a new one and found that I could just see the light if I looked closely at the side at 3.5 μA (3.48 V over 1 MΩ resistor). This last result was verified with a third LED.

      Yellow
      Very bright at 9 mA (3.04 V over 330 Ω resistor).
      Very bright at 5 mA (3.10 V over 680 Ω resistor).
      Pretty bright at 1 mA (3.15 V over 2.2 kΩ resistor).
      Bright enough for an indicator at 680 μA (3.19 V over 4.7 kΩ resistor).
      Bright enough for a dim indicator at 150 μA (3.25 V over 22 kΩ resistor).
      Very dim at 320 μA (3.32 V over 100 kΩ resistor).
      Just visible, looking through the side, at 10 μA (3.37 V over 330 kΩ resistor). This was confirmed with a second LED.

      Blue
      Lit up dimly as I was plugging it in. Only the anode was connected at this point. (I was using clips to connect the cathode.) My body must have provided a path to ground, even though no other part of my body was touching anything metallic, and I was standing on a non-conductive floor.
      Very bright at 9 mA (2.00 V over 220 Ω resistor).
      Very bright at 6 mA (2.10 V over 330 Ω resistor).
      Pretty bright at 1 mA (2.38 V over 2.2 kΩ resistor).
      Bright enough for an indicator at 120 μA (2.53 V over 22 kΩ resistor).
      Bright enough for a dim indicator at 26 μA (2.60 V over 100 kΩ resistor).
      Very dim at 8 μA (2.64 V over 330 kΩ resistor).
      Just visible, looking through the side, at 3 μA (2.69 V over 1 MΩ resistor).
      I tried a second LED with the 1 MΩ resistor, and it was very dim, but still visible through the top.

      Green
      Very bright at 29 mA (2.90 V over 100 Ω resistor). This was tested after the 330 Ω resistor.
      Pretty bright at 9 mA (3.01 V over 330 Ω resistor).
      Pretty bright at 6 mA (3.04 V over 470 Ω resistor).
      Bright enough for an indicator at 1 mA (3.13 V over 2.2 kΩ resistor).
      Bright enough for a dim indicator at 320 μA (3.20 V over 10 kΩ resistor).
      Very dim at 70 μA (3.28 V over 47 kΩ resistor).
      Just visible, looking through the side, at 33 μA (3.32 V over 100 kΩ resistor). This was confirmed with a second LED.

      These numbers probably will not be accurate for all of these LEDs (and the brightnesses are subjective), but they should be a good starting point.

  • Size of LEDs?? T1 or T1-¾ ?? Should also state in mm (metric) for those that do not understand older industry T sizing terms.

    • Sorry about that, they are 5mm LEDs (or T1-¾). The description has been updated to reflect that, thanks for the heads up!

  • You can never have enough LEDs, and… wait, that’s in the description. Oh well, not a bad price for an assortment.


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