參數(shù)資料
型號： 253G
廠商： Aavid Thermalloy
文件頁數(shù)： 2/116頁
文件大?。?/td> 0K
描述： THERMAL GREASE
MSDS 材料安全數(shù)據(jù)表： THERMALCOTE 1 MSDS
標準包裝： 1
系列： Thermalcote™
類型： 硅合成物
尺寸/尺寸： 10 磅罐裝
其它名稱： 035350
10
HO
W
T
O
S
ELECT
A
HEA
T
SINK
EUROPE
ASIA
Italy Tel: +39 051 764011 email: sales.it@aavid.com
United Kingdom Tel: +44 1793 401400 email: sales.uk@aavid.com
Singapore Tel: +65 6362 8388 email: sales@aavid.com.sg
Taiwan Tel: +886(2) 2698-9888 email: sales@aavid.com.tw
AMERICA
USA Tel: +1 (603) 224-9988 email: info@aavid.com
www.aavidthermalloy.com
Find a heat sink to keep a TO-220 device below the maximum
150 °C junction temperature in forced convection at 400 ft/min.
Device must be electrically insulated and mounted with a labor
saving clip.
Given:
PD = 12 watts
RθJC = 2.5°C/W (from semiconductor manufacturer)
TJ max = 140°C (from semiconductor manufacturer)
TA max = 50°C
A Hi-Flow pad works great with clip mounting and provides the
necessary electrical insulation. Thermal resistance for
Hi-Flow at low pressure is 1.15°C/W (from page 87).
Using equation 1, solve for RθSA
RθSA = 140 – 50 - (2.5 + 1.15) = 3.85°C/W
12
Many styles are available. If board space is a concern,
533202B02551G (pg 55) meets the requirements.
According to the above graph, an airflow of 400 ft/min results
in a thermal resistance of 3°C/W. This is less than the required
thermal resistance of 3.85°C/W and is therefore acceptable
under these airflow conditions.
If height is a concern, 533702B02552G would meet the
requirements and is only 1.0” tall
Find a space saving heat sink to keep a TO-220 device below the
maximum 150°C junction temperature in natural convection. Device
will be screw mounted with an electrically conductive interface.
Given:
PD = 6 watts
RθJC = 3°C/W (from semiconductor manufacturer)
TJ max = 150°C (from semiconductor manufacturer)
TA max = 65°C
A KonduxTM pad is a good choice for electrically conductive
applications. Thermal resistance for KonduxTM can be determined
from the following graph.
Example B
Example A
Typical TO-220 Performance
Screw Torque (in-lb)
0.00
012
3
4
5
R
(C/W
)
CS
0.10
0.20
0.30
0.40
0.50
0.60
6
How To Select a Heat Sink
At 2 in-lb of torque the thermal resistance
is approximately RθCS = 0.5°C/W
Using equation 1, solve for RθSA
RθSA = 150 – 65 - ( 3 + 0.5) = 10.7°C/W
6
The Index by Heat Sink Style on page 8 lists space saving heat sinks.
Several models are in the 10 °C/W range. Choose the one that best
fits the application and verify thermal resistance from graph.
Part number 593202B03500G shows
a 60 °C temperature rise at 6 watts.
RθSA = 60 = 10.0°C/W
6
Which meets the above requirement in natural convection.
Air Velocity—Feet Per Minute
Heat Dissipated—Watts
Th
ermal
Resistanc
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t—°C/W
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Moun
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t—°C
Air Velocity—Feet Per Minute
Heat Dissipated—Watts
Th
ermal
Resistanc
eF
rom
MT
G
Sur
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oAmbien
t—°C/W
at
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53330X
53320X
Moun
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Ambien
t—°C
Hi-Flow is a trademark of the Bergquist Company
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參數(shù)描述
253-G 功能描述:罩類、盒類及殼類產(chǎn)品 5.63 x 3.25 x 2.54 Gray RoHS:否 制造商:Bud Industries 產(chǎn)品:Boxes 外部深度:6.35 mm 外部寬度:6.35 mm 外部高度:2.56 mm NEMA 額定值: IP 等級: 材料:Acrylonitrile Butadiene Styrene (ABS) 顏色:Red
253-HX 制造商:TE Connectivity 功能描述:
253-I GRAY 制造商:SERPAC Electronic Enclosures 功能描述:ENCLOSURE;PLASTIC;GRAY;5.6LX3.3WX2.5H
253-I, BK 制造商:SERPAC Electronic Enclosures 功能描述:Enclosure;Box-Lid;Desktop;ABS,UL94HB;Black;5.62x3.25x2.5 In;IP40;S Series
253I,AL 功能描述:BOX 5.62X3.25X2.50 9V ALMOND RoHS:是 類別:盒，外殼，支架 >> 箱 系列:S 特色產(chǎn)品:Customize Your Enclosure 3D 型號:EN4SD16128x.stp EN4SD16128x.dxf 標準包裝:1 系列:Eclipse 容器 - 類型:盒 尺寸/尺寸:16.000" L x 12.000" W（406.40mm x 304.80mm） 高度:8.000"（203.20mm） 面積 (L x W):192"（1239cm） 設計:鉸鏈式門，蓋 材質:金屬 - 鋼 顏色:灰 厚度:16 號 特點:不銹鋼鉸鏈 額定值:IP66，NEMA 3R，4，12，UL-508 材料可燃性額定值:- 裝運信息:從 Digi-Key 運送 重量:16 磅（7.3kg） 相關產(chǎn)品:ESP1612-ND - PANEL STEEL SWING 16X12" WHTEPG1612-ND - PANEL STEEL 14.2 X 10.2"EP1612-ND - PANEL STEEL 14.2X10.2" WHT
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