WV series Heat Sink Thermal Performance Analysis/Test

WV series Heat Sink Thermal Performance Analysis/Test
Air Direction Options:
(1) parallel with the fins
(2) from side to side of the heat sink
(3) perpendicular to device, from the front
(4) perpendicular to device, from the back
The Analyses/Tests below using Option (1) and (2) plus free convection (no forced air)
Ambient temperature 25 ºC, TO-247 Package
Analysis Data
Power (W)
Air Velocity (Feet per Minute)
Mounting Surface Temp (ºC) (w/air, option 1)
Mounting Surface Temp (ºC) (w/air, option 2)
Mounting Surface Temp (ºC) (no air)
Mounting Surface Temp
Rise above Ambient (ºC)
Thermal resistance from MTG
Surface to Ambient (ºC/W)
Radiation is applied in Natural convection
0
0
0
0
0
0
0
0
0
2
59.9
34.9
17.4
4
200
54.7
76.3
92.9
29.7
51.3
67.9
7.43
12.83
17.0
8
400
63.2
96.9
122.92
38.2
71.9
97.9
4.78
8.99
12.2
12
600
70.9
112.2
16
800
77.6
125.3
20
1000
83.2
136.6
45.9
87.2
52.6
100.3
58.2
111.6
3.83
7.27
3.29
6.27
2.91
5.58
Option 1 Air flow direction
Natural Convection
Option 2 Air flow direction
Ambient temperature 25 ºC, TO-220 Package (WV-T220-101)
Analysis Data
Power (W)
0
2
4
Air Velocity (Feet per Minute)
0
200
Mounting Surface Temp (ºC) (w/air, option 1)
0
59.7
Mounting Surface Temp (ºC) (w/air, option 2)
0
80.5
Mounting Surface Temp (ºC) (Free air)
0
68.2
106.7
0
34.7
Mounting Surface Temp
0
55.5
Rise above Ambient (ºC)
0
43.2
81.7
0
8.68
Thermal resistance from MTG surface to
0
13.88
Ambient (ºC/W)
0
21.6
20.4
Radiation is applied in Natural convection
8
400
68.5
96.8
134.6
43.5
71.8
109.6
5.44
8.98
13.7
12
600
76.5
110.0
16
800
83.5
121.8
20
1000
90.1
132.7
51.5
85.0
58.5
96.8
65.1
107.7
4.29
7.08
3.66
6.05
3.26
5.39
Option 2 Air flow direction
Natural Convection
Option 1 Air flow direction