what are you using this for?

I am building up a personal inventory of common SMD components. LED as indicator light for any future projects.

illumination?

Currently, my 1st project using SMD is building a Joule Thief. My PCB was designed for 3528.
However, I feel the light is not bright enough to be useful. Intend to redesign the PCB to use 5050.

what is the source voltage you plan on using?

Usually I choose projects that require 9V, 5V, 3V or 1.5V. Anything that can be power by AA or 9V battery.

if using higher voltage (say 12V) it would be more efficient to connect them in series.

Noted. Thank you very much for your advices.

 

Maybe that's why you got a thousand of them so cheap, there's not a lot of use for them.

I guess it is cheap because it is China factory reject, noticed that the cathode marking is on the anode side.

I have a dash cam in my truck. It has GPS and can show speed and where I've been. But it doesn't show brake lights or turn signals. So I bought some super bright LED's and planned to hang two in front of the camera, out of focus and high in the picture frame. When I turn right the GREEN LED will flash with the right blinker; the RED LED with the left signal. So in the video there's recorded evidence of blinking turn signals. And if I turn on the 4 way flashers both LED's blink, showing evidence of having the 4 way's on. But the red I have is a clear SUPER BRIGHT. It can be seen in daylight. It can prove just a little distracting at night, but at least I have a video record of whether I signaled or not. So far I haven't had to prove anything. Yet. But when the time comes, if I'm not at fault - I have a video record of it. (if I am at fault nobody needs to know there was a camera watching).

Wow, that is cool.

Panic Mode and I both think a red LED isn't going to provide much illumination. Maybe you can wire one up and light it up for us. Take a picture in regular light to see if it's effective. Just for comparison, take a picture in dimly lit light. Dark won't give us much to compare to because the camera will compensate for the lack of light and provide more exposure.

As you know this is a SMD 5050 with 6 leads, without soldering it on a PCB. It is almost impossible to light up. I managed to light up the 5050 with some copper tapes, CR3032 battery. Now, just need another pair of hand to apply pressure on the 5050 to light it while I take a photo. I will post the photo tomorrow.

 

Ok, here the photos

Do let me know if there a way to use 5050 + CR2032 as a LED Throwie.
Thank you

 

I'm impressed with the level of light from that little red wagon.

Throwie? Easy enough. Solder a copper wire across the three anodes and then solder a copper wire across the three cathodes. Make a coil of copper wire (not a coil as in an inductor) to form a large contact area then tape them to your 2032. Attach a magnet and you have your throwie.

I had some old exhausted 2032's and before I threw them into my used battery bin I wanted to drain them of their remaining power. So I slipped a superbright LED onto one. Waited for it to die. Took over 4 weeks before it was too dim to notice without looking closely. Not sure how much power those LED Chips draw but on a 2032 I'm betting they last a couple weeks on a used battery and I can't imagine how long on fresh ones.

 

I'm impressed with the level of light from that little red wagon.

If you PM me with your address, I will send a couple 5050 & 3528 to you.

Throwie? Easy enough. Solder a copper wire across the three anodes and then solder a copper wire across the three cathodes.

Understand this steps.

Make a coil of copper wire (not a coil as in an inductor) to form a large contact area then tape them to your 2032.

Do not understand this step. Any diagram ?

Thank you very much.

 

I appreciate the offer, but it'd probably just be something for me to put away in a safe place (from me) and never see it again. I do that a lot.

Sorry, no diagram, how bout a photo?

 

Sorry, no diagram, how bout a photo?View attachment 135405

Ok, I try. Thank you very much.