The officer the the german custom warned me those china LED can set a house in fire, and to be carefull
So I finally installed those ones and stick them to an aluminium L profile (about 20mm X 10mm and 1,5mm thick)... I placed them on the 20mm side.
Everything works. They are sucking about 1,2A after warming up (<1,5A max)@12V so about 15W (<20W MAX)... each strip.
The strip end where the wire are soldered is the hottest spot in the strip...of course.
Since I needed two of them I place the two soldeirng ends close to each other at the center of the alu profile.
In this way I reduced the amount of wire needed, I made a little Y cable and soldered the two strips. Something like this:
12VDC PSU
I
I
XXXXXX LED XXXXXXXXXXX----- Y wire----XXXXXX LED XXXXXXXXXXX
I left the LED running for 2/3 hours ... when I came back I touched the middle of the alu profile just in where the Y cable center is: results, i can hold my finger on it but it to me it was very hot, like 40-50° my guess. According to the specs: LED Chip < 115°, Aluminum bar<70°C, silicone glue <90°C), so it should be ok...
Interesting enough the both strip end on the other side (not the soldering one) were cold...
Ambient temperature was 20°, again my guess.
Comparing the cold state vs hot state I obseved no discoloration or any light LED issue.
What do you think??
Maybe I put a R in series, since the lux amount is just way above what I need, but indeed it is nice to have
...
PS: Temped to run those LED like this as an experiment. I would like to investigate what will happen.
PSS: if you guys are interested I can do some measurements with a thermocouple....
Thanks in advance!