5/16/12
Extrusion Profiles
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81255
This part is in stock!
Inventory Snapshot:
96 feet*
*Material in stock maybe allocated to other orders and is subject to prior sales
Part
Number
81255
Thermal Resistance
°C/W at 3in length*
1.72
Width
in
2.80
Height
in
2.25
Surface Area
in
2
/in
40.7
Weight
lb/ft
2.40
Part
Class
C
*Based on a 75°C rise in natural convection
Thermal Curves
based on 3.000 in length
New Length 3.000
Change Length
in
mm
Natural Convection
Heat Sink Temperature Rise
Above Ambient
25.0
18.8
12.5
6.2
7.00
5.25
3.50
1.75
Heat Sink
Thermal Resistance
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Extrusion Profiles
0.0
0.00
1.0
3.0
5.0
7.0
9.0
1.0
3.0
5.0
7.0
9.0
Power Dissipated (W)
Power Dissipated (W)
Forced Convection
Heat Sink Temperature Rise
Above Ambient (10W Dissipated)
Air Flow (m/s)
1.0
15.0
11.2
2.0
3.0
4.1
5.1
1.50
1.12
1.0
Heat Sink
Thermal Resistance
Air Flow (m/s)
2.0
3.0
4.1
5.1
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5/16/12
11.2
7.5
3.8
Extrusion Profiles
1.12
0.75
0.38
0.0
0.00
200
400
600
800
1000
200
400
600
800
1000
Air Flow (LFM)
Air Flow (LFM)
Building a Part Number
Full Bar Length = 8.00ft
Base
Part #
5 digit
base
part #
Bar
Length
1 Full (normally 8-ft)
2 Half (small cut fee)
Finish
F Unfinished
F Unfinished
Length
(use zeros for full or half bars)
RoHS
Compliant
NO "G"
required
Compliant
Add "G"
Not
Compliant
00000
00000
length in inches
to three decimal places**
3 Custom
B Black Anodized
(cut to specified length) U Unfinished*
V AavSHIELD
3
C Gold Chromate
_____
81255
_
3
_
U
_____
06500
_
G
*For unfinished extrusions with cut lengths other than half bar, the finish designation is a U.
**If the part is less than 10 inches, the first of these 5 digits (digit 7 of the 13 digit series) would be a zero (0).
Examples:
If you wanted to simply order extrusion # 81255 in standard bar form, the part number would be: 812551F00000. The unit price
would be sold by the foot.
If you wanted extrusion 81255 cut to a length of 6.500" and black anodized, the part number would be: 812553B06500G. The
unit price would be by the piece.
If you wanted extrusion 81255 cut to a length of 14.725" and a wash finish, the part number would be: 812553U14725G. The unit
price would be by the piece.
If you wanted extrusion 81255 cut to a length of 14.725" and Gold Chromate finish, the part number would be: 812553C14725.
The unit price would be by the piece.
Standard Aavid Thermalloy parts require all 12-13 positions to be complete.
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Extrusion Profiles
Non-Standard Extrusions
Aavid Thermalloy has over 10,000 extrusion profile designs on file, most with the extrusion die already available. These
parts have minimum order requirements and longer lead times, but may be cost effective compared to a new design.
Customizing & Advanced Capabilities
We offer several options for those applications which require a more unique solution. Challenge us with your thermal
requirements - we can design custom solutions.
©2012 Aavid Thermalloy, LLC
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