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參數(shù)資料
型號： 542502B00000G
廠商： Aavid Thermalloy
文件頁數(shù)： 106/116頁
文件大小： 0K
描述： BOARD LEVEL HEAT SINK
產(chǎn)品培訓模塊： How to Select a Heat Sink
標準包裝： 1,000
類型： 插件板級，垂直
冷卻式包裝： TO-220
固定方法： 螺栓固定和 PC 引腳
形狀： 矩形
長度： 1.25" (31.75mm)
寬： 0.875"（22.2mm）
機座外的高度（散熱片高度）： 0.250"（6.35mm）
溫升時的功耗： 2.5W @ 60°C
在強制氣流下的熱敏電阻： 在 700 LFM 時為4°C/W
自然環(huán)境下的熱電阻： 24°C/W
材質： 鋁
材料表面處理： 黑色陽極化處理
其它名稱： 001978
9
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
The basic equation for heat transfer or power dissipation may be stated as follows:
Where:
PD = the power dissipated by the semiconductor device in watts.
ΔT = the temperature difference of driving potential which causes the flow of heat.
ΣRθ = the sum of the thermal resistances of the heat flow path across which ΔT exists.
The above relationship may be stated in the following forms:
The above equations are generally used to determine the required thermal resistance of the heat sink (RθSA),
since the heat dissipation, maximum junction and/or case temperature, and ambient temperature are known or set.
How To Select a Heat Sink
Where:
TJ = the junction temperature in °C (maximum is usually stated by the manufacturer of the semiconductor device).
TC = case temperature of the semiconductor device in °C.
TS = temperature of the heat sink mounting surface in thermal contact with the semiconductor device in °C.
TA = ambient air temperature in °C.
RθJC = thermal resistance from junction to case of the semiconductor device in °C per watt
(usually stated by manufacturer of semiconductor device).
RθCS = thermal resistance through the interface between the semiconductor device
and the surface on which it is mounted in °C per watt.
RθSA = thermal resistance from mounting surface to ambient or thermal resistance of heat sink in °C per watt.
Figure 1 indicates the location of the various heat
flow paths, temperatures and thermal resistances.
The common practice is to represent the system with
a network of resistances in series as shown in Figure 2.
Atmosphere
or ambient
Mounting surface
(cooler/dissipator)
Semiconductor case
Junction
(heat source)
Interface
Heat flow path mounting
surface to ambient, equation (3)
Heat flow path case
to ambient equation (2)
Heat flow path junction
to ambient, equation (1)
P
D
P
D
T
A
R
θSA
R
θCS
R
θJC
T
S
T
C
T
A
T
J
TJ–TA
PD =
RθJC + RθCS + RθSA
TC–TA
PD =
RθCS + RθSA
TS–TA
PD =
RθSA
Δ T
PD =
ΣRθ
RθCS
RθJC
TS
TA
TJ
RθSA
TC
FIGURE 1
FIGURE 2
How to select a heat sink
相關PDF資料
PDF描述
SOMC16011K20GEA RES ARRAY 1.2K OHM 15 RES 16SOIC
3758/26 275SF CABLE 26 COND FLAT .050" 26AWG
577202B04000G HEATSINK TO-220 .500" COMPACT
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5176381-5 CONN PLUG FH 120POS .050 R/A
相關代理商/技術參數(shù)
參數(shù)描述
542502D00000 制造商:Aavid Thermalloy 功能描述:Heat Sink Passive TO-220 Staggered 24 制造商:Aavid Thermalloy 功能描述:Heat Sink Passive TO-220 Staggered 24°C/W Matte Tin
542502D00000G 功能描述:散熱片 TO-220 RoHS:否 制造商:Ampro By ADLINK 產(chǎn)品:Heat Sink Accessories 安裝風格:Through Hole 散熱片材料: 散熱片樣式: 熱阻: 長度: 寬度: 高度: 設計目的:Express-HRR
542502J00000 制造商:Aavid Thermalloy 功能描述:- Bulk
542502J00000G 制造商:Aavid Thermalloy 功能描述:Heat Sink Passive TO-220 Staggered Thru-Hole 24°C/W Pre-Black Anodized
542502T00000 制造商:Aavid Thermalloy 功能描述:- Bulk
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