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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:

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Customer 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 from 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.

      • Hi, sorry to randomly reply to a comment you made last year.

        Why are the green LED’s so much dimmer than the rest at the same voltage?

  • 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.

Customer Reviews

4 out of 5

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0 of 1 found this helpful:

LEDs

Nice product. Bright. Good for projects, etc.


Great fun, and they work , handle with care

These are fun, but they need a current limiting resistor in front of them. I used a Li battery, but needed a 5 to 10k ohm resistor to prevent burning out the red, yellow, and green. The blues would go with a 1k ohm and was the brightest by far.

great fun and a nice selection of parts.


LEDs of wonder

We tend to rely on Sparkfun for solid collections of awesome stuff. Especially as we are prototyping new ideas. The LED assortment we bought was just another rock star collection of pieces that work great, with solid explanations and support along for the ride.

They aren’t going to blow your mind or save your marriage, but they sure do make electronics projects light up real good.


They Work.

All the LEDs work. I guess that’s a 4 or 5.


leds

They where leds and they came in a 20 pack. So I gues that works.