Gikfun5mm LED Light Assorted Kit DIY LEDs for Arduino (Pack of 100pcs) EK8437

Bought these to use for a school circuits project for making light up cards, and they worked great. Lots leftover for future projects!

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.

These LEDS are perfect for your model projects. They require a 3 t0 9 volts dc battery to operate. They look awesome in the dark. Very happy.

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