[Lab] smt low and high power LEDs - brightness

Andrew Plumb andrew at plumb.org
Fri Mar 22 13:35:22 EDT 2013

On the other hand, if you're looking for something more flexible to prototype with, you could try LED lighting strips cut and positioned as required:



Some of the options carried by Adafruit are serial-controlled and/or weatherproofed.


On 2013-03-22, at 1:25 PM, Andrew O'Malley wrote:

> The first LEDs describe sound more like they're intended as indicator/status lights, as opposed to latter which would be more suited to ambient or task lighting.   Depends if the fixture is going to be decorative or actually be used to give off useable light to replace other general light sources.
> Working from LED specs alone is tricky, I'd suggest you order a few samples to see how they look in person.  
> You probably will need to follow the heatsink guidelines for the larger LEDs, there should be info about the requirements in the datasheet.
> Cheers,
> Andrew
> Message: 1
> Date: Fri, 22 Mar 2013 13:07:55 -0400
> From: Kyle Chisholm <kyle.chisholm2 at gmail.com>
> To: lab at artengine.ca
> Subject: [Lab] smt low and high power LEDs - brightness
> Message-ID: <72D82AB4-1F7C-497F-9989-F4799F16CD79 at gmail.com>
> Content-Type: text/plain; charset="us-ascii"
> Hello,
> I'm working on making a cool light fixture with an array of LEDs mounted on pcb and I'm wondering if anyone can tell me what type of brightness I can expect from medium/low powered LED (0.06W, 6.8 lumens typical luminous flux) versus high power LEDs (0.5W, 39 lumens OR 1W, 105 lumens)?
> If I have an array of 4 or 36 LEDs, for example, how might that compare to 60W or 100W bulb(s)?
> Also the high powered LEDs have slugs and I'm wondering what is necessary for heat dissipation - do I really really need a heatsink for 0.5W or 1W LEDs?
> I'm referring specifically to Everlight Optoelectronic components:
> low mid-power
> high power
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