Also for testing they are indeed quite bright
I can't imagine that using too high resistor values would invoke this behaviour,
I have some SMT LEDs that are marked with the cathode mark, but they clearly work the opposite of the markings, so I can only assume its a manufacturing error,
Buying LEDs from China is like a box of chocolate, you never know what you're gonna get.
These LEDs are not common cathode. Well the green and blue is common cathode but the red LED seem to be mounted to other way so it only works if current and ground is reversed.I'd like a new shipment of correct, 100% working, LEDs.
Hi, Simon I'm very sorry, I know this problem. At present I have corrected the mistake, the reason is I suppliers provide goods wrong to me, and I didn't see. Don't worry, I will resend new item to your address, water clear RGB led... Hope to understand, sincere thanks! Any question can email to contact me
However the question is how many newbies like me think they themselves make an error and doesn't bother to send a message, get stuck with bad ones and looses interest because it just doesn't work?
QuoteI have some SMT LEDs that are marked with the cathode mark, but they clearly work the opposite of the markings, so I can only assume its a manufacturing error,I have some of those as well. It could be however a data sheet error, or in fact another type of LED that is being passed off at that type number. That is the problem with China eBay components, you never know what you will get.
On 5050 SMT LEDs, does the triangle mark ever identify the anodes?