Gikfun 5mm LED Light Assorted Kit DIY LEDs for Arduino (Pack of 100pcs) EK8437

My little actually received a bulb and copper tape, for the end of the year craft from remote teacher, and just loved it. So I immediately went online and found some reasonably priced and purchased. We have a ton of plans to make holiday cards, going forward and other small projects. This is perfect because Santa, has already grabbed a circuit kit, for Christmas, because we’re totally into things like this! Easy to use, and so simple for the kids to experiment with, without injury, obviously, keep and eye on the projects, but they can do them for themselves! Can’t wait to come up with new ideas, as we have many bulbs and a large roll of copper tape to go along with it all! Excellent product!

The voltage specs given by the vender is almost useless. It's the max current rating that matters and I didn't see a max current rating. All 100 Tested Good. The LED drops about 2 volts depending on the type of LED. Using a 12 VDC source and a 2.7K resistor that gave about 3.7 mA through the LED. My guess is that the max mA is about 20 mA. I wouldn't run more than 15 mA through the LED and 10 mA is plenty. As long as this parameter is obeyed, the LED should last years. Maybe decades. Maybe centuries. Who knows.

Every green, red and yellow LED couldn’t take the power and exploded, dangerous product. I only wanted the green LED’s now have to buy more elsewhere.

Works as intended. They even have a neat smell when directly connected to a 9V battery.

These worked without issues, though the green was pretty weak. Though it's been a while since I worked with these LEDs, I might have used the wrong resistance for the green. I only used them to light up the buttons of a controller, so I don't know how well they last if left on for a long while