Electronics > Projects, Designs, and Technical Stuff
120.000 LEDs - logistic nightmare
Milentije:
Hello to you all!
I have a project on horizon for which I will need ~120000 LEDs. A lot of custom dimensions 7 digit, 7 segment displays for outdoor use.
I have very good experience with Cree C566(D) series of diodes (high brightness, decent viewing angle, acceptable price). Now I am looking for red ones. 120000 of them. When I combine stocks from mouser, digikey and farnell I don't get even close to needed amount.
Do you have recommendations for cheaper LEDs which I can buy in needed quantities? Those from Cree are 0,094€ for 50k QTY. It would be nice if I could find something cheaper, but with similar specs. Ofcourse, something what I can buy in ~120000 Qty.
TIA
DaJMasta:
Digikey is not a great place for that kind of quantity, and often isn't a great place for prices on optoelectronics. Find a manufacturer with a part you like and talk with them directly if possible.
Also, you want to solder 120,000 through hole LEDs?! If you go surface mount, you halve assembly time for the parts even if done by hand, and if you do pick and place in a reflow oven, it's probably less than a tenth of the assembly time. Such a swap may require some redesign of diffusers and housings, but it's probably worth the trouble.
Milentije:
Thank you for your post.
You are on point regarding assembly process and time.
Any way, I have to contact manufacturers directly because of quantity.
Still looking for suggestions from smarter and more experienced guys and girls. :)
tooki:
Would this perhaps be something better made out of something other than discrete LEDs?! I’d think that there’s a very good chance that using LED video wall panels or even LED strips could make more sense.
alanambrose:
The thing to realise is that nearly all opto products including LEDs, driver chips etc are made in the Far East - mostly China and Taiwan. Very few are made in the Western world. (High end opto stuff is made in Japan, but you don't want those.) So, that's where you need to go. Start with LCSC, Ali, Taobao etc to find some candidate parts #s and then iterate around searching for pricing. Extra bonus points if you find and talk to the actual manufacturer.
Alan
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