You don’t have to worry about adding a resistor to an LED if you get an LED with a built in resistor! This pack contains 20x 5mm LEDs in four different colors. There are five LEDs per color in blue, red, green, and yellow. This pack will help alleviate any frustrations you’ve had with accidentally burning them out, just by having a resistor in the diode itself! Each LED has an operating voltage range of 3.0V to 5V to help make your next project shine! Each pack of these LEDs are conveniently bagged in reusable ESD safe packaging to make sure nothing accidentally gets damaged before you are able to use them. https://elecena.pl/product/15258910/led-assorted-with-resistor-5mm-20-pack 2018-10-26 https://elecena.pl/product/15258910/led-assorted-with-resistor-5mm-20-pack 2018-11-21 https://elecena.pl/product/15258910/led-assorted-with-resistor-5mm-20-pack 2018-11-27 https://elecena.pl/product/15258910/led-assorted-with-resistor-5mm-20-pack 2022-02-21 https://elecena.pl/product/15258910/led-assorted-with-resistor-5mm-20-pack 2025-04-11 https://elecena.pl/product/15258910/led-assorted-with-resistor-5mm-20-pack 2025-04-14