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Board Level Heat Sinks
Board Level Heat Sinks
Featuring a variety of standard extrusions and stampings, Same Sky's board level heat sinks are compatible with TO-218, TO-220, TO-252, and TO-263 transistor package types. Our board level heat sinks are made from aluminum or copper with black anodized, blue anodized, or tin-plated material finishes. Our board level heat sinks also support a range of standard shapes and sizes from 8 mm up to 70 mm and profiles from 4 mm up to 45 mm.
Types of Board Level Heat Sinks
Package Cooled
Not Applicable
TO-218
TO-220
TO-252
TO-263
Reset
Mounting Style
PCB
Surface Mount
Reset
Solder Pin Orientation
Horizontal
No Pin
Vertical
Reset
Solder Pin Length (mm)
Min
Max
GO
2.3
2.54
2.6
2.65
2.74
2.8
2.95
3.18
3.2
3.5
3.8
3.9
3.96
4
4.3
4.31
4.5
5
5.03
5.08
5.1
5.3
6.1
6.35
6.5
7.4
8.26
8.5
9.5
9.53
9.7
Reset
Rth @ 75°C ΔT, nat conv (°C/W)
Min
Max
GO
4.49
4.85
4.97
5.21
5.47
5.66
5.77
5.86
6.15
6.25
6.41
6.94
7.13
7.29
7.5
7.58
7.59
7.65
7.81
7.98
8.06
8.15
8.24
8.43
9.15
9.26
9.38
9.56
9.62
9.74
10.14
10.19
10.27
10.71
10.87
10.9
11.03
11.19
11.54
11.72
12.1
12.5
12.71
12.75
12.79
12.93
13.16
13.64
13.67
14.42
14.71
15
15.16
15.5
15.79
15.83
15.96
16.3
16.66
17.05
17.74
18.12
18.29
18.34
18.63
18.82
18.83
19.22
19.74
19.75
20.27
20.59
20.83
20.93
21.44
22.06
22.39
23.9
24.19
24.79
25.35
25.86
25.92
26.13
26.32
26.4
27.37
27.66
27.78
28.85
29.09
29.57
30.38
31.22
32.69
33.28
35.71
38.45
38.75
38.9
Reset
Rth @ 1 W, nat conv (°C/W)
Min
Max
GO
5.2
5.5
6.61
7
7.36
7.6
7.62
7.9
7.99
8.05
8.34
8.51
8.52
8.63
8.71
8.94
9.28
9.37
9.7
9.81
9.93
10.49
10.51
10.52
10.6
10.92
10.96
11.01
11.06
11.15
11.17
11.54
11.67
12.28
12.29
12.33
12.5
12.98
12.99
13.03
13.19
13.31
13.4
13.52
13.6
13.64
13.97
14.1
14.33
14.35
14.4
15
15.27
15.42
15.8
15.97
16.12
16.16
16.2
16.65
16.9
17.13
17.29
18.58
18.6
18.99
19.1
19.57
19.73
19.8
20
20.24
20.27
20.74
20.99
21.9
21.92
22.14
22.39
22.47
22.6
22.64
22.9
23.05
23.32
24.3
24.62
26.05
26.1
26.6
27.22
28.6
29.7
30.28
30.4
30.86
31.07
31.2
31.94
32.65
32.7
32.8
33.89
33.93
34.4
35.3
35.46
35.5
37.62
39.9
40.16
41.2
41.6
41.98
42
Reset
Rth @ 1 W, 200 LFM (°C/W)
Min
Max
GO
2.01
2.1
2.24
2.29
2.31
2.38
2.45
2.5
2.57
2.63
2.67
2.7
2.78
2.85
2.88
2.91
2.98
3.09
3.26
3.28
3.32
3.44
3.47
3.5
3.51
3.52
3.53
3.62
3.63
3.64
3.66
3.7
3.73
3.76
3.79
3.86
3.94
4.03
4.05
4.2
4.28
4.3
4.33
4.35
4.38
4.39
4.42
4.44
4.46
4.49
4.51
4.76
4.8
4.85
4.93
5
5.01
5.17
5.39
5.44
5.5
5.6
5.72
5.77
5.83
5.87
5.88
6.12
6.3
6.32
6.5
6.7
6.84
6.86
6.9
7.05
7.07
7.24
7.45
7.46
7.51
7.7
7.74
7.9
8.15
8.18
8.36
8.5
8.8
9.2
9.51
10.05
10.1
10.49
10.6
10.68
10.9
11.04
11.2
11.6
12
12.6
13.2
14
16.3
16.6
19.2
20.9
21.4
Reset
Rth @ 1 W, 400 LFM (°C/W)
Min
Max
GO
1
1.11
1.22
1.55
1.66
1.7
1.71
1.79
1.8
1.82
1.86
1.91
2.07
2.09
2.12
2.13
2.14
2.21
2.25
2.31
2.42
2.43
2.44
2.48
2.49
2.5
2.52
2.56
2.57
2.6
2.74
2.76
2.8
2.82
2.84
2.86
2.88
2.89
2.9
2.97
2.98
3
3.1
3.17
3.2
3.21
3.27
3.28
3.3
3.31
3.4
3.44
3.68
3.7
4
4.01
4.1
4.13
4.17
4.2
4.22
4.48
4.5
4.51
4.58
4.85
5.05
5.08
5.18
5.2
5.56
5.7
5.76
5.77
5.79
5.8
5.84
5.9
6.09
6.1
6.2
6.25
6.41
6.5
6.53
6.7
6.81
6.84
7.3
7.5
7.87
7.88
8.1
8.48
8.5
8.6
8.9
9
10.3
10.8
10.9
13.8
14.8
15
Reset
PD @ 75°C ΔT, nat conv (W)
Min
Max
GO
1.93
1.94
1.95
2.1
2.25
2.29
2.4
2.47
2.54
2.58
2.6
2.7
2.71
2.74
2.84
2.85
2.87
2.89
2.9
2.96
3.03
3.1
3.14
3.35
3.4
3.5
3.58
3.6
3.64
3.7
3.8
3.9
3.98
4.02
4.09
4.1
4.14
4.23
4.4
4.5
4.6
4.7
4.74
4.75
4.76
4.84
4.95
5
5.1
5.2
5.49
5.5
5.7
5.8
5.86
5.88
5.9
6
6.2
6.4
6.5
6.7
6.8
6.88
6.9
7
7.3
7.36
7.4
7.7
7.8
7.85
8
8.1
8.2
8.9
9.1
9.2
9.3
9.4
9.6
9.8
9.89
9.9
10
10.29
10.53
10.8
11.7
12
12.2
12.79
12.8
13
13.26
13.7
14.4
15.1
15.46
16.7
Reset
Length (mm)
Min
Max
GO
8
12
12.7
14.99
15
17
17.78
18.79
19
19.05
19.38
20
21.66
23.4
23.62
24.4
25
25.4
27
27.96
29.97
30
30.3
31
31.75
31.8
35
36.83
38
38.1
41
41.66
41.91
42.5
44.45
49.31
50
50.8
63
63.5
70
Reset
Width (mm)
Min
Max
GO
12
12.8
13
13.21
16
16.5
17.8
19
19.4
19.7
19.8
20
21.1
22
22.2
22.86
24.9
25
25.25
25.4
25.91
26.2
29
30
31.9
32
33.02
34.5
34.92
35
38.1
41.6
42
44.45
45
48.26
50
51
Reset
Height (mm)
Min
Max
GO
4
4.5
5.35
6.35
6.5
7.1
7.7
8.5
9.4
9.5
9.52
9.53
9.65
9.91
10
10.16
11
11.2
11.43
11.94
12
12.5
12.7
12.9
13.08
14
16
18.5
19
20
21.59
24.13
25
25.4
28
32.5
45
Reset
Material
AL1050
AL1100
AL5052
AL6063-T5
C1100
Reset
Material Finish
Black Anodized
Blue Anodized
Tin Plated
Reset
Rth = Thermal Resistance, PD = Power Dissipation
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