Heat Sink

[FAQ-Forum-Bot]

Does the PowerBar V2 strip Osram Oslon white require a heat sink? If so, will it work with Aluminum case set (53810)Thank you,

-------------------------------------------------------------------------------------------------------------------------------------------------
Diese Frage von Sridhar S. bezieht sich auf PowerBar V2 LED Strip Osram Oslon und wurde durch den FAQ-Bot automatisch eingestellt.

[Achim H]

The PowerBar has Power Leds on it. All Power Leds needs cooling.

That Aluminium Profil Set you ask is suitable for power up to 16.8 watts.
For a PowerBar (28.5W) you need a larger heat sink.

[R.Kränzler]

in addition the PowerBar ist too large for that profile 20mm --> 16,5mm.
Maybe you can use the MaxLine stripes.

[ssri1983]

Thanks for both replies. I couldn't find any information on the Powerbar size or the particular LEDs used on the product page. But the LEDs used seem to be from the Osram Oslon LCW CR7P.CC family. I checked out a few resources on heat sink design but haven't found heat dissipation rates for the strip of the Powerbar. I would like to get this one particularly because of the high CRI. Should I just ball park conservatively and get a "big enough" generic aluminum profile with fins? Apologies this is my first LED project, but I have no issues getting into the technical details and any pointers would be really appreciated.

Thanks again!

[Borax]

It depends a little bit on the installation. For ~25W total power you should select a heat sink with at least 2K/W. The thermal resistance of heat sinks is usually given for ideal conditions (vertical fins, free air flow...). I would choose a heat sink with 1.5K/W or even better.

[R.Kränzler]

It's that Oslon:
http://www.leds.de/en/High-Power-LEDs/O ... itter.html

Measurement is: 240 x 20 x 6 mm

More information about HighPower LEDs and cooling you will find here (PDF file in english):
viewtopic.php?f=34&t=15765