different LED - which is brighter

yellow

Flashlight Enthusiast
Joined
Oct 31, 2002
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Baden.at
Hi together!
At a recent project I have 2 options:

3 Watt T-bin at 450 mA and
5 Watt LED (~2 years old) at 300 mA

which of these 2 will be brighter at the given specs?
 

easilyled

Flashaholic
Joined
Jun 25, 2004
Messages
7,252
Location
Middlesex, UK
Seems to me like there are too many unknown variables for anyone to be able to give an answer.

What is the bin code of the 5W and what is the Vf of the 2 leds?

Are you defining brightness as total output (lumens) or throw (lux)

That said the currents that you have stated seem to be underdriving both of the leds.

You'd need a bigger reflector for the 5W if you want it to throw at all.

What form factor are you considering?
 
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