Why is this called a 3W LED?

LowQCab

Joined Nov 6, 2012
1,308
3-Watt, is a generic Die-Size description.
You can certainly get higher powered LEDs in this same form factor.
This one just doesn't have the nads of the higher quality LEDs.
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ElectricSpidey

Joined Dec 2, 2017
1,961
If you look closely at the data sheet, it says the forward voltage could be as high as 2.8 @ 700mA, also the peak current is 1 amp, and @ 1 Amp the forward voltage could easily be 3 volts.

So now do the math, and you will see a 3 watt value at the pulse time. (yes, it's incredibly short)

Edited: Typo
 
Last edited:

MrSalts

Joined Apr 2, 2020
712
I found a similar error on a Cree LED last year. They sent me a thank you note & renamed the LED to avoid confusion with the bad datasheet already circulating in the market. You should notify the manufacturer. Cree sent me a little thank-you gift.
 

Thread Starter

MikeA

Joined Jan 20, 2013
270
It is chinese watts...
I'm very familiar with the alternative Chinese measuring system, but most other cheap LEDs I've tries are accurately described. The declared wattage was indeed the 100% duty cycle. They would not last 100K hours, maybe 5K, but that's another matter.
 
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