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07/2020
Corona II
– LED Line Scan Illumination
PMA_CHR_CD40069_R05_Manual_Corona-II_XLC4
148
8.4 Corona II heat sink selection
8.4.1 Introduction
The LED modules of the Corona II family are deliverable with several heat sink options. The
right choice for a heat sink option depends on several factors, like maximum ambient
temperature, mounting condition, possibility of free air flow and operating conditions.
The following instructions help you to find the best heat sink option for your application.
The formula below gives you a rough estimation for the module temperature, the Corona II
reaches in thermal balance under a set of given conditions.
It is strongly recommended to perform tests under application conditions to prove the
compliance with the temperature limits.
8.4.2 Heat sink options
Overview of the available heat sinks for the Corona II modules:
Type
Dimension
2
[mm]
Thermal resistance Rth
3
[K/W]
for 170 mm length
Description
A
50 x 10
1,63
Passive less space
B
50 x 40
1,52
Passive Standard
C
90 x 100
0,8
Passive
L
50 x 47
0,38
Active with fan
W
50 x 18
0,25
4
Active with water
2
For mechanical dimensions refer to “Mechanical dimension of the different heat sinks” at the end of this
document
3
The thermal resistance is valid for one 170mm base unit segment.
4
Typical, depends on water flow and cooling capability of aggregate.