YUEONEWIN 500Pcs 5mm LED Diode Light Emitting Diode Assortment Kit Led Electronics Circuit Assorted Kit for Arduino, PCB Circuit DIY, Christmas Card Making (Multicolor-White/Red/Yellow/Blue/Green)

I like to restore & sometimes mod old video game systems like Sega Genesis, Nintendo NES, Super Nintendo, Gameboys & such. This little kit has enough LED's to last a WHILE depending on how many projects you do. I recently bought a Sega Genesis for my 14 year old & ended up replacing the RESET switch. While I had it apart he wanted me to replace the original red LED with a blue one. It actually turned out pretty nice. I also modded an original Gameboy DMG & replaced the original red LED with a green one because I did a green theme. That turned out pretty awesome as well.

buena calidad, aun no los uso

The leads on many of the LEDs are the same length, making it impossible to distinguish + and - .

These LEDs arrived in a very short time and in a nice box that protected them perfectly. I didn't test all 500 of them, but the ones I did test were fully within spec and nice and bright. At less than 3 cents per diode, they are an excellent value! They come in colored cases, which is helpful over those that come in clear cases and you have to run current through them to find out which color light they emit. Why the Amazon web page advertises them at "20 W" is beyond me - that is utter nonsense! If you push 20 W through them (i.e. typically around 6 A), you are not producing light but smoke!There is still one potential problem, that actually has nothing to do with the product itself: If you don't know how to compute the proper resistor to use with them, given the power supply you use, and the forward voltage and current that is provided with the diodes, you may set yourself up for a lot of frustration and potentially blown LEDs. Those LEDs can replace other LEDs but they are NOT energy-saving replacement for little conventional incandescent lightbulbs. The seller fails to mention that with sufficient clarity.So in the hands of those who know what they are doing, they are a great product and an excellent value.

Nice LEDs, bright and a nice selection of each color. Leads are short but that's fine. The cathode lead is shorter which is normal so even a beginner can tell which way to wire up the LED. I always use resistors with these, the rating is 3-3.2v so use the appropriate resistor to get the voltage down to that level or these will not last long if you keep power to them.Overall quality is good, work fine with 5mm panel mount clips and are great for a variety of uses. The white and green LEDs are significantly brighter than the others, although the blue appears very bright as well. Great value for 500 LEDs. The case is also very nice to have to keep them organized.