TO-5 Heat Sinks
3257, 3260
Extruded collar style heat sink with radial fins
Air Velocity—Feet Per Minute
400
600 800
0
200
1000
100
80
50
40
30
20
12.70
(0.500)
60
40
10
0
20
0
Extruded collar style heat
sink with radial fins. The split
collar design provides a press fit
between the transistor and the
heat sink creating an excellent
thermal conduction path.
ø
8.07
(0.318)
0.0
0.4
0.8
1.2
1.6
2.0
"A"
THRU
Heat Dissipated—Watts
326005
325705
Material: Aluminum
Finish: Black Anodize
Available in two heights.
ORDERING INFORMATION
Part Number
“A” Dim
325705B00000G
326005B00000G
6.35 (0.250)
9.53 (0.375)
3201, 3202
Extruded collar style heat sink with swept back fins
"A"
Air Velocity—Feet Per Minute
0
200
400
600
800
1000
100
80
50
40
30
20
60
40
12.70
(0.500)
10
0
20
0
6.35
Extruded collar style heat sink with
swept back fins for increased surface
area in a small volume. The split collar
design provides a press fit between
the transistor and the heat sink creating
an excellent thermal conduction path.
Available in two inside diameters.
(0.250)
0.0
0.4
0.8
1.2
1.6
2.0
Heat Dissipated—Watts
Material: Aluminum
Finish: Black Anodize
ORDERING INFORMATION
Part Number
“A” Dim
320105B00000G
320205B00000G
8.07 (0.318)
7.75 (0.305)
3230
Extruded collar style heat sink with mounting hole
Air Velocity—Feet Per Minute
0
200
400
600
800
1000
100
80
50
40
30
20
10
0
60
40
ø
8.08
(0.318)
Extruded collar style heat sink
with mounting hole for hardware
R 7.62
(0.300)
20
0
ø
3.17
(0.125)
attachment to the circuit card. The heat
sink includes a mount boss that will
accept a 4-40 screw for secure mounting
in high vibration environments. The split
collar design provides a press fit between
the transistor and the heat sink creating
an excellent thermal conduction path.
6.35
(0.250)
0.0
0.4
0.8
1.2
1.6
2.0
19.05
(0.750)
Heat Dissipated—Watts
Material: Aluminum
Finish: Black Anodize
ORDERING INFORMATION
Part Number
Description
Extruded collar style heat sink with mounting boss
323005B00000G
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AMERICA
EUROPE
ASIA
76
www.aavidthermalloy.com
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AAVID [ AAVID THERMALLOY, LLC ]
