smallest solar cell 2

[sunclipa]

Hi Just wanted to find the smallest commercially available solar cell or similar , is 5mm x 10 mm feasible for example? it would only need to generate a small amount of power for a low power circuit. many thanks in advance. Sunclipa

 

[itsmoked]

Sure there are small ones. Calculators use postage stamp sizes.
You want really small use a yellow LED.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[jimkirk]

As Keith said, LEDs (non-phosphor color converted like white) work as micro solar cells, generally most sensitive to their emission color.

https://www.youtube.com/watch?v=6WGKz2sUa0w

Traditional solar cells... I easily found 17 mm diameter and 22 x 7 mm cells:

https://www.digikey.com/en/products...lgDsA5iAC+hMAE46yxCBSQMOAsTIgADNz6DII8dLnybQA

 

[MacGyverS2000]

I have never had the need to look for solar cells... never expected them on DigiKey, either. Good to know. Thanks, Jim!

Dan - Owner

http://www.Hi-TecDesigns.com

 

[IRstuff]

https://www.ebay.com/itm/233108140602?hash=item364653f23a:g:mZAAAOSw5f1hP5Up

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

https://www.youtube.com/watch?v=BKorP55Aqvg

faq731-376 forum1529 Entire Forum list

http://www.eng-tips.com/forumlist.cfm

 

[sunclipa]

Some great leads there . many thanks all.

 

[Comcokid]

Years ago did a design of a level sensor that used a bubble level tube with a light source on one side and two solderable photo sensors (custom) on the other. Accurate to a couple arc-seconds. Part of a construction laser leveling system.

Thought I would check real quick with the type of photosensor companies that make these things today. Found this. Smallest one is 1.9 by 4.1mm, and designed for solar cell use.

https://www.osioptoelectronics.com/Libraries/Datasheets/Solderable-Chips.sflb.ashx

 

[itsmoked]

Wow.
Dang small!

Pretty cool though as some very low average consumption circuits could probably use those for all their energy requirements. Way more energy than vibration or thermal-differences would typically provide.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[sunnysky]

All glass diodes are photosensitive, but not necessarily optically-efficient collectors, but they are small. e.g. 1N4148