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參數(shù)資料
型號(hào): 576303B00000G
廠商: Aavid Thermalloy
文件頁(yè)數(shù): 2/116頁(yè)
文件大小: 0K
描述: BOARD LEVEL HEAT SINK
產(chǎn)品培訓(xùn)模塊: How to Select a Heat Sink
標(biāo)準(zhǔn)包裝: 500
類型: 插件板級(jí)
冷卻式包裝: TO-3
固定方法: 把緊螺栓
形狀: 方形
長(zhǎng)度: 1.81"(45.97mm)
寬: 1.810"(45.97mm)
機(jī)座外的高度(散熱片高度): 1.000"(25.40mm)
溫升時(shí)的功耗: 6W @ 40°C
在強(qiáng)制氣流下的熱敏電阻: 在 700 LFM 時(shí)為1.5°C/W
自然環(huán)境下的熱電阻: 6°C/W
材質(zhì):
材料表面處理: 黑色陽(yáng)極化處理
其它名稱: 002420
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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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rom
MT
G
Sur
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et
oAmbien
t—°C/W
at
t
10
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8
10
8
6
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400
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1000
Moun
ting
Sur
fac
eT
emp
Ri
se
A
bo
ve
Ambien
t—°C
Air Velocity—Feet Per Minute
Heat Dissipated—Watts
Th
ermal
Resistanc
eF
rom
MT
G
Sur
fac
et
oAmbien
t—°C/W
at
t
10
0
20
40
60
80
100
02
4
6
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10
8
6
2
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0
400
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53330X
53320X
Moun
ting
Sur
fac
eT
emp
Ri
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A
bo
ve
Ambien
t—°C
Hi-Flow is a trademark of the Bergquist Company
相關(guān)PDF資料
PDF描述
P05N-040ST-A-G CONN SOCKT 40POS .5MM VERT SMD
SOMC160347K0GEA RES ARRAY 47K OHM 8 RES 16-SOIC
SMBJ5.0A-E3/52 TVS UNIDIRECT 600W 5V 5% SMB
576203B00000G BOARD LEVEL HEAT SINK
P05N-040PT-A-G CONN PLUG 40POS .5MM VERT SMD
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57632 SL002 功能描述:連接線 2PR 20AWG SHIELD RoHS:否 制造商:Belden Wire & Cable 絞合:19 x 32 電壓額定值:1 kV 長(zhǎng)度:1000 ft 線規(guī) - 美國(guó)線規(guī)(AWG):20 絕緣材料:Tetraflouroethylene (TFE) 最大溫度:+ 200 C 類型:High Temperature, High Voltage 外殼顏色:Blue (Light) 系列:83027
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