https://www.wanliangled.com/new/COB-Flip-Chip-Common-Andoe-Common-Cathode.html
COB flip chip tecnology is widely use in fine pixel pitch LED display, what can achive energy saving, big view angle, long life span and less faliure rate....
anode and cathodeflip chipcobcommon
https://www.sparkfun.com/led-rgb-diffused-common-cathode.html
Ever hear of a thing called RGB? Red, Green, Blue? How about an RGB LED? These 5mm units have four pins - Cathode is the longest pin. One for each color and a...
common cathodesparkfun electronicsledrgbdiffused