Tops 200 (300) Power Warm White
LED
OSM5XAHEE1E
VER . 1
■
Heat
design
The following pictures show some measurements of mounted 5W Led on the heat sink for each board A and B (See Fig 1) with
using thermograph to make an observation about heat distribution. Each boards is tested at various current conditions.
As a result, LED needs larger heat sink as much as possible to reduce its own case temperature.
Fig. 1
A
B
C
D
E
F
G
Configuration pattern examples for board assembly
LED power
5W
10W
25W
50W
100W
200W
300W
Material
Al
Al
Al
Al
Al
Al
Al
Surface area (m㎡) Min.
10,300
20,600
51,500
103,000
206,000
412,000
618,000
Board
Above tested LED device is attached with adhesive sheet to the heatsink.
For reference's sake, Tj absolute maximum rating is defined at 115℃ as a prerequisite on design process of 5W LED.
<Fig.2> Board A (surface area=10,300m㎡)
<Fig.3> Board B (surface area=20,600m㎡)
IF=600mA
IF=600mA
LED & Application Technologies
http://www.optosupply.com
VER A.0
OPTOSUPPLY [ OptoSupply International ]
