Thermal Performance This varies mainly due to the thermal resistance between the heat sink and the cold wall.
Groove e
Thickness of the board
0,8 1,2 1,6 mm
(inches)
7,15 7,55 7,95
0.282 0.297 0.313
0.031 0.047 0.063
e : recommended gap dimension for maximum efficiency
The measure of this resistance depends on three main factors : - the heat sink - the thermal clamp - the cold wall which must pull the heat from the heatsink through conduction
This measure does not take into account the convection and the radiation phenomena, but allows the determination of the thermal resistance of the clamp coupling, for which the values are dependant on the length of the thermal clamp.
The thermal resistance of coupling per surface is less or equal to 1,6 K.W -1 .cm² or 2.5°C.inch/Watt.
Amphenol Thermal Clamps - Thermal Resistance Data
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
3
6
8
10
12
14
16
18
20
Length of card locks (inches, total of pair)
Amphenol ®
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