OSM5X9H891E Datasheet, PDF (2/3 Pages) OptoSupply International – Tops 3 3W Power Warm Whiite LED

Tops 3*3W Power Warm White LED
OSM5X9H891E
Ver.0
■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 Configuration pattern examples for board assembly
㎡ Board LED power Material Surface area (m ) Min.
A
5W
Al
20,600
B
10W
Al
41,200
C
25W
Al
103,000
D
50W
Al
206,000
E
100W
Al
412,000
F
200W
Al
824,000
G
300W
Al
1236,000
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