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

Filters | Reset All
Package Cooled
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Not Applicable
TO-218
TO-220
TO-252
TO-263
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Mounting Style
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PCB
Surface Mount
Reset
Solder Pin Orientation
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Horizontal
No Pin
Vertical
Reset
Solder Pin Length (mm)
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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)
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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)
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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)
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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)
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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)
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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)
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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)
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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)
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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
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AL1050
AL1100
AL5052
AL6063-T5
C1100
Reset
Material Finish
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Black Anodized
Blue Anodized
Tin Plated
Reset

Rth = Thermal Resistance, PD = Power Dissipation


Results 138
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Model Number Package Cooled Solder Pin Orientation Solder Pin Length (mm) Thermal Resistance @ 1 W, nat conv (°C/W) Material Material Finish Dimensions LxWxH (mm) Dimensions LxWxH (in)
TO-218 Horizontal 2.54 9.7 AL1050 Black Anodized 44.45 x 44.45 x 12.5 1.75 x 1.75 x 0.49
TO-218, TO-220 Vertical 3.9 32.7 AL1050 Black Anodized 19 x 19 x 9.5 0.75 x 0.75 x 0.37
TO-218, TO-220 Horizontal 4.3 29.7 AL1050 Black Anodized 30.3 x 22.2 x 5.35 1.19 x 0.87 x 0.21
TO-218, TO-220 Horizontal 3.8 19.8 AL1050 Black Anodized 50.8 x 35 x 8.5 2 x 1.38 x 0.35
TO-218, TO-220 Horizontal 5.1 16.2 AL1050 Black Anodized 42.5 x 25.4 x 25.4 1.67 x 1 x 1
TO-218, TO-220 No Pin -- 12.5 AL1050 Black Anodized 38 x 42 x 25 1.5 x 1.65 x 0.98
TO-218, TO-220 No Pin -- 13.4 AL1050 Black Anodized 38 x 42 x 20 1.5 x 1.65 x 0.79
TO-218, TO-220 Horizontal 5.3 24.3 AL1050 Black Anodized 24.4 x 25.4 x 12.7 0.96 x 1 x 0.5
TO-218, TO-220 No Pin -- 31.2 AL1050 Black Anodized 19 x 22 x 19 0.75 x 0.87 x 0.75
TO-218, TO-220 No Pin -- 26.6 AL1050 Black Anodized 19 x 22 x 19 0.75 x 0.87 x 0.75
TO-218, TO-220 No Pin -- 41.6 AL1050 Black Anodized 12 x 25 x 4.5 0.47 x 0.98 x 0.18
TO-218, TO-220 No Pin -- 42 AL1050 Black Anodized 12 x 25 x 4.5 0.47 x 0.98 x 0.18
TO-218, TO-220 No Pin -- 41.2 AL1050 Black Anodized 12 x 25 x 4.5 0.47 x 0.98 x 0.18
TO-218, TO-220 No Pin -- 5.2 AL6063-T5 Black Anodized 70 x 50 x 28 2.95 x 1.97 x 1.1
TO-218, TO-220 No Pin -- 7.6 AL6063-T5 Black Anodized 50 x 50 x 28 1.97 x 1.97 x 1.1
TO-218, TO-220 No Pin -- 5.5 AL6063-T5 Black Anodized 70 x 30 x 45 2.76 x 1.18 x 1.77
TO-218, TO-220 No Pin -- 7 AL6063-T5 Black Anodized 50 x 30 x 45 1.97 x 1.18 x 1.77
TO-218, TO-220 Vertical 3.5 22.6 AL6063-T5 Black Anodized 17 x 19.4 x 32.5 0.7 x 0.76 x 1.28
TO-218, TO-220 No Pin -- 34.4 AL6063-T5 Black Anodized 25 x 12 x 6.5 0.98 x 0.47 x 0.26
TO-218, TO-220 No Pin -- 35.3 AL6063-T5 Black Anodized 25 x 12 x 6.5 0.98 x 0.47 x 0.26
Not Applicable No Pin -- 26.1 AL6063-T5 Blue Anodized 17 x 31.9 x 12.5 0.7 x 1.26 x 0.49
Not Applicable No Pin -- 26.1 AL6063-T5 Blue Anodized 17 x 31.9 x 12.5 0.7 x 1.26 x 0.49
TO-220 Horizontal 4 18.6 AL1050 Black Anodized 23.4 x 38.1 x 12.7 0.92 x 1.5 x 0.5
TO-220 No Pin -- 28.6 AL5052 Black Anodized 19.05 x 24.9 x 4 0.75 x 0.98 x 0.16
TO-220 No Pin -- 19.1 AL5052 Black Anodized 31 x 25.25 x 12.9 1.22 x 0.99 x 0.51
Results 138
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