Explaining the Thermal Design and Management
Overheating (temperature rise) has always been the enemy of stable and reliable product operation. When thermal management R&D personnel do product demonstration and design, they need to take care of the needs of different market entities and achieve the best balance between performance indicators and comprehensive costs. Here DIANYANG is mainly to talk about Thermal design and management.
Because electronic components are basically affected by the temperature parameter, such as the thermal noise of the resistor, the decrease of the PN junction voltage of the transistor under the influence of temperature rise, and the inconsistent capacitance value of the capacitor at high and low temperatures.
With the flexible use of thermal imaging cameras, R&D personnel can greatly improve the work efficiency of all aspects of heat dissipation design.
Thermal management
1. Quickly evaluate the heat load
Thermal imaging camera can visually image the temperature distribution of the product, helping R&D personnel to accurately evaluate the thermal distribution, locate the area with excessive heat load, and make the subsequent heat dissipation design more targeted.
As shown in the figure below, the redder means the higher the temperature。
▲PCB board
2. Evaluation and verification of heat dissipation scheme
There will be a variety of heat dissipation schemes in the design stage. The thermal imaging camera can help R&D personnel quickly and intuitively evaluate different heat dissipation schemes and determine the technical route.
For example, placing a discrete heat source on a large metal radiator will generate a large thermal gradient because the heat is slowly conducted through the aluminum to the fins (fins).
The R&D personnel plan to implant heat pipes in the radiator to reduce the thickness of the radiator plate and the area of the radiator, reduce the dependence on forced convection so as to reduce noise, and ensure the long-term stable operation of the product. The thermal imaging camera can be very helpful to engineers evaluate the effectiveness of the program
The picture above explains:
► Heat source power 150W;
►Left picture: traditional aluminum heat sink, length 30.5cm, base thickness 1.5cm, weight 4.4kg, it can be found that the heat is diffused gradually with the heat source as the center;
►Right picture: The heat sink after 5 heat pipes is implanted, the length is 25.4cm, the base thickness is 0.7cm, and the weight is 2.9kg.
Compared with the traditional heat sink, the material is reduced by 34%. It can be found that the heat pipe can take away the heat isothermally and the radiator temperature The distribution is uniform, and it is found that only 3 heat pipes are required for heat conduction, which may further reduce the cost.
Further, R&D personnel need to design the layout and contact of the heat source and heat pipe radiator. With the help of infrared thermal imaging cameras, R&D personnel found that the heat source and radiator can use heat pipes to realize the isolation and transmission of heat, which makes the design of the product more flexible.
The picture above explains:
► Heat source power 30W;
►Left picture: The heat source is in direct contact with the traditional heat sink, and the temperature of the heat sink presents an obvious thermal gradient distribution;
►Right picture: The heat source isolates the heat to the heat sink through the heat pipe. It can be found that the heat pipe transfers heat isothermally, and the temperature of the heat sink is evenly distributed; the temperature at the far end of the heat sink is 0.5°C higher than the near end, because the heat sink heats the surrounding air The air rises and gathers and heats the far end of the radiator;
► R&D personnel can further optimize the design of the number, size, location, and distribution of heat pipes.
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本文由翊翊所思转载自DIANYANG，原文标题为:Thermal design and management，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。
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红外热成像系统产品及定制服务供应商点扬科技授权世强先进代理红外热像仪、热分析仪产品
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顺络电子（Sunlord）电容器选型表
顺络 - 电容器,CAPACITOR,CAPACITOR,TC212A335M010Y,TC212E107M025B,TC211A685K006Y,TC212C337M004Y,TC212Y107K002Y,TC211B686M002Y,TC212C337M004B,TC212Y157K004Y,TC212A335M010B,TC211B686M002B,TC211B475M020B,TC212E107M025Y,TC211A685K006B,TC212Y475M010Y,TC211A474K025Y,TC212A684M035B,TC211A225M035B,TC211A335M004Y,TC312W107M050B100,TC211A335M004B,TC211A225M035Y,TC212A684M035Y,TC312E475K075B500,TC312C685M035B200,TC211A474K025B,TC311B106K004B150,TC212Y106M025Y,TC311B156M016B150,TC211D336K025Y,TC211C474K050Y,TC211A226K010B,TC211A685K004Y,TC212A685K010B,TC212Y107K004Y,TC211B686M004Y,TC212Y157K006Y,TC211B686M004B,TC211A685K004B,TC211D336K025B,TC212A685K010Y,TC212C476K020Y,TC211A226K010Y,TC311D157K016Y100,TC212A105M006B,TC312D335M100Y500,TC211B475M020Y,TC212D226M020Y,TC211C474K050B,TC212A105M006Y,TC212Y156M025Y,TC311D106M016Y150,TC211A226K016B,TC212E107M020Y,TC312W337K020B070,TC311C336M016B150,TC212Y107K006Y,TC212D227K004Y,TC212D106K025Y,TC212Y224K050Y,TC211C685K035B,NC211B475K016B,TC211A226K016Y,TC212D227K004B,NC211C476M010Y,TC212D106K025B,NC211D337K004B,TC211C685K035Y,TC211E157M016Y,TC212B336K004B,TC312D106K063Y300,TC212B336K006B,TC312D475M075Y500,NC211A685M006Y,TC212C106K010B,TC212A155M006B,TC212D157M010B,TC312G2337M025B090,TC212C106K010Y,TC312C156M020B150,TC211E157M016B,TC212A155M006Y,NC211A106K016B,TC212D227K006Y,TC212D157M010Y,TC211A105K035B,TC211A684M025B,TC211B107K010Y,TC212D227K006B,TC312D686K020B150,TC211B475M025Y,TC212Y157K002Y,NC211D337K002B,TC211B107K010B,NC211A156K010B,TC212C155M035B,TC211A684M025Y,TC211D336K020Y,TC211A105K035Y,TC212D226M025Y,TC212E107M020B,TC211A335M006Y,TC212C155M035Y,TC312W156M075B350,TC211A335M006B,TC311B686K006Y150,TC212Y226K016Y,TC311E687K004Y090,NC211E227M006Y,TC212D226M025B,TC211B475M025B,TC311D106K016B150,TC311E227K004Y100,NC211C336M010Y,TC211B476K004B,TC211E156K035Y,TC311E337M004Y090,TC311C226M004B150,TC211B476K004Y,TC211A224K050B,TC211C476K010B,TC212B155M020B,TC211E156K035B,TC212Y227M006Y,TC212D106K020Y,TC211C476K010Y,NC211D477K006B,TC211D336K020B,TC312D336K025Y150,TC212D106K020B,TC211A224K050Y,TC312D475M063B300,TC211A684M020Y,TC312W685K075Y400,TC312E475M050B300,TC311D227K004Y100,NC211D337K006B,TC211E157M010Y,TC311E477K010Y090,TC211B474K035Y,TC212A475M016Y,TC311C336K006B150,TC212D157M016B,TC211A684M020B,TC312E335K100B500,TC211E157M010B,NC211D477K004B,TC212A475M016B,TC212Y227M004Y,TC212D157M016Y,TC212C225K025B,TC212B684M050B,TC212Y685K010Y,NC211A106K010B,TC212A334K025B,TC211A107K002B,TC212D226M020B,TC212A334K025Y,TC211A107K002Y,TC311E227M010Y090,TC212C225K025Y,TC311D157M006B100,TC311D337K010B100,TC311C476M004Y150,TC311D157K010B100,TC212C476K020B,TC211A107K004B,TC311C686K016B150,TC311D476M010B150,NC211D477K002B,TC311B226M004B150,TC212Y227M002Y,TC312B106K025B200,TC212B155M025B,TC211C476K016Y,TC212E227K016Y,TC212E227K016B,TC211C476K016B,TC212Y335K050Y,NC211C686K010B,TC211C686M010B,TC211C475M035Y,TC311B106M006B350,TC212Y106M020Y,TC212C336K016B,TC212E226M035Y,TC211B335M016Y,NC211B335K016B,TC211B685K016B,TC311B336K010Y150,TC211D226M016Y,TC211C475M035B,TC211D226M016B,TC211C686M010Y,TC212D337M010Y,TC212E226M035B,TC212C336K016Y,TC211B685K016Y,TC211B335M016B,TC311G2338M002B070,TC311D476K006Y150,NC211C336M006Y,TC212E106K035Y,TC212B105M025B,TC212E106K035B,TC211B335K050B,TC211A107K006Y,TC212D337M010B,TC312B226M020Y150,TC311B336M016B150,TC312E107M020B070,TC211D337M004B,TC211B684M035Y,TC212A686M002Y,TC212A686M002B,TC211D337M004Y,TC211E226M035Y,TC211D685K050B,TC312E157K025B090,TC211B335K050Y,TC211B685K010Y,TC212B474K050B,TC312D685M035B200,TC311C107M004B150,TC312C336M020B150,TC312D106M020Y150,TC211A107K004Y,TC312E336M050B150,TC312B156K025Y150,TC211E226M035B,TC312D335K100B500,TC211E336K035B,TC311B156K010Y150,TC211D337M006B,TC211A107K006B,TC211D337M006Y,TC211E336K035Y,TC212Y685K006Y,TC312E686K035Y150,TC212E227K010Y,NC211C686K004B,TC311C156M016B150,NC211B476M004Y,TC212A475M010Y,TC212E227K010B,TC212D107M016B,TC211B336K004Y,TC211B685K010B,TC211E227K006B,TC212Y684M035Y,TC211B336K004B,TC212B225M050B,TC212A475M010B,TC211E227K006Y,TC212D107M016Y,TC311E157M004Y100,TC212B335M035B,TC211D685K050Y,TC211B476K006B,TC211A106M016Y,NC211C686K006B,TC311W337K016B070,TC211D226M020Y,TC211D335M050B,TC311E687K002B070,NC211B476M006Y,TC211A106M016B,TC211B476K006Y,TC311E107K010Y150,TC312E106K050Y200,TC311D477M004B100,TC211C476K020B,TC311E477K006B090,TC211A334K025B,TC311E477M006Y090,TC211D335M050Y,TC212Y105K035Y,TC212C336K020B,TC311B226K006Y200,TC211C476K020Y,TC211D226M020B,TC211A334K025Y,TC212C336K020Y,TC211C335M025Y,TC312W337M020Y070,TC212D156K035B,TC212A335M006Y,TC312W756M050Y100,TC211B475M016Y,TC211B105K050Y,TC312E156M050B200,TC212B226M004B,TC211B475M016B,TC211C335M025B,TC212A335M006B,TC212C226M010B,TC311C476K004B150,TC312D156K025Y150,TC211B105K050B,TC211D107M004Y,TC212A476K004Y,TC211D157M006Y,TC212E157M020B,TC211D157M006B,TC212A476K004B,TC312C226K020B150,TC212B475M020B,TC312D156M035Y200,TC211A156M010Y,TC312E157K020Y070,TC311D157M010Y100,TC211D107M004B,TC212B476K010B,TC212D685M025B,TC212A685K006B,TC312W476K050B150,NC211B476M002Y,TC311D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TT Electronics Launches LRMAP1216 High Power Shunt Resistors
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In automotive systems, electronics must pass the ISO7637 EMC transient test(Pulse 5a/5b) to verify that the automotive electronics will not suffer from spikes and malfunction. In response to the surge immunity required by ISO7637 pulse 5a, a TVS function higher than pulse 5b must be selected to pass the test. FIRSTOHM is providing the best solution for passing the pulse 5a test. It is recommended to use an anti-surge resistor/automotive load dump resistor to reduce the impact of the surgeon on the circuit.
电子商城
品牌：冠坤电子
品类：Conductive Polymer Aluminum Solid Capacitors
价格：￥1.4000
现货： 24,607
品牌：Nippon Chemi-Con
品类：导电性高分子混合型铝电解电容器
价格：￥2.7793
现货： 23,750
现货市场
品牌：TT Electronics
品类：Low Resistance Metal Alloy Resistors
价格：￥0.7268
现货：160,000
品牌：TT Electronics
品类：Low Resistance Metal Alloy Resistors
价格：￥0.7268
现货：107,900
服务
可定制插座连接器的间距1.25mm~2.54mm；列数：单列/双列/三列/四列；端子类型：直焊针、直角焊针、表面贴装式、无焊柔性针压接、绕接、载体.；镀层、车针长度/直径、连接针长度等参数可按需定制。
最小起订量： 1 提交需求>
可定制UV胶的粘度范围：150~25000cps，粘接材料：金属，塑料PCB，玻璃，陶瓷等；固化方式：UV固化；双固化，产品通过ISO9001:2008及ISO14000等认证。
最小起订量： 1支 提交需求>
授权代理品牌：集成电路
授权代理品牌：分立元件
授权代理品牌：接插件及结构件
授权代理品牌：部件、组件及配件
授权代理品牌：电源及模块
授权代理品牌：电子材料
授权代理品牌：仪器仪表及测试配组件
授权代理品牌：电工工具及材料
授权代理品牌：机械电子元件
授权代理品牌：加工与定制
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