100pcs Pre-soldered Micro pico Litz Wired Leads Blue SMD Led 0603 + Muti-Resistor NEW

Super Tiny. About like the tip of a sharp pencil. Flat. One side much brighter than the other. Polarized and comes with current limiting resistors. Very nice.

Amazing micro led. I used for my airplane model 1:200 scale and looks amazing.

These lights are awesome. I use them all over my HO layout for light poles, also great for ditch lights on locomotives because they’re so small. The wires are insulated so they won’t short, they do need resistors installed but they come with them!

First let me say that these work great. I greatly like the fact that they come with voltage matching resistors. The color is strong and they are bright. when you see that they are 2mm across it is remarkable. The color changing works great. If you set up several in a row and turn on the power they all sequence through the exact same order in almost perfect synchronization, just fractionally off each other. However if you spread them out you do not notice it at all. But unless you are totally neurotic (like me) you may not even notice it when they are bundled together. It is that little. It has more colors than what i gave in the photos and they are very clear. There is a very bright side and a dim side. The wires are nice and long and are very well put together for such a small package. Now all that above is great. Nothing there is a problem for me at all. The problem lies in the fact that they label the wires (in the ad on Amazon) as 'cathode' and 'anode' instead of positive and negative. I am very familiar with LED's and do a lot of custom lighting items for my clients with them. The issue is cathode and anode do not indicate positive and negative. A cathode can be positive or negative as can the anode. In my photos I placed a couple images that show how the two do not designate positive or negative. This labeling on their part caused me a good bit of grief as I made my wire harness and installed it into the epoxy while I waited for the LED's to arrive. When they got here the wiring was wrong. I assumed they went with normal anode and cathode marking and I was wrong. That is why they lost one star. So for those of you using normal batteries the GOLD (copper) colored with is POSITIVE. This is shown in the photos above. If you look close you will see that the gold wire is on the positive side of the button battery. These LED's really do work great just get the wiring right.

Update 04/23/2020: Wanted to update this review as I'm buying the $30 multi pack now, so I added a few more pics to this to show how this looks on my RG Sazabi and my RG Nu Gundam. I've since learned I prefer using a 3V coin battery rather than an old iPhone cable. Since these SMDs are made for 3v I don't have to add a resistor to my circuit. In case anyone is wondering I didn't have to mod my RG Sazabi at all for the SMD to fit. All I did was used magnet wire (thinnest wire you can get) and since theres empty space within the cockpit in the head, all I had to do was secure the SMD in there. The photos I used are before I tried the magnet wire and 3v coin. I'm still learning and I'm getting better at this. The RG Nu Gundam I used a pin vise and drilled a small hole in the clear plastic piece used for the eyes and was easily able to put it in and run the magnet wire. On a 3v coin battery alone I was able to have the eye powered up non stop for about a full week until it started to lose luminance. Building a custom MG Sazabi now and playnning on light everything up with these. First Review: Finally got around to using these today after a few months sitting in my drawer. I build Gundam models and since most kits dont have the ability to put a normal LED in them I had to resort to this microscopic sized SMD. I'm quite surprised at how bright this thing is for it size. The kit was straightforward all you have to do is find something to power it. I used an old iphone cable using only the power and ground. I tested the voltage using a multimeter and it puts out 5V. They kit includes a bunch of resistors that vary in voltage and since I have a 5V power supply all I had to do was simply choose the resistor that was in the 5V range. I have no experience with electronics just did a little research. I don't know how to calculate what resistor I'd need if it wasn't clearly labled in this kit. However, seeing this work has sparked my curiosity and now I want to learn more for future Gunpla's i create. This is probably the easiest circuit to create. Having this presoldered and resistors clearly labeled with which one to use for your power supply made this even easier. Note: I'm clearly not done finishing up my current setup in the picture. I plan on running longer wires and electric taping or covering the exposed wires. This was just me taking a pic that it works.

Perfect for miniature models. Low voltage and receive abundance of resistors.

Amazing!!! Unreal That so much light can come out of something the size of President Lincoln’s eye on the penny. This has to be the absolute best option. I’m so glad I spent 4 more dollars and got this one. And the package came with sooo many!!! Great deal, even better product!!

I bought this for model lighting and what a pleasant surprise. They are almost microscopic but provide a lot of light for the size. Only requires about a 1mm hole. The positive lead has insulating varnish. There are separate sets of resistors included for a wide range of voltages (3V to 16V). They are a warm color temperature (estimate 2800K-3000K). I use a 12VDC bus for lighting. Solder the resistor for your voltage, drill a small hole, add a little PVA to hold in place and done. Thank you, seller.