The most waterproof LED cooler on the market

Posted by Mingfatech on April 10th, 2018

Everyone knows that more and more people are starting to use LED heat sink , then what is the design of this thing itself ? Well , Xiaobang's Xiaobian is here to tell you , what is the importance of design ? LED itself is a semiconductor device , all semiconductor devices have a certain temperature requirements for normal operation , including ambient temperature and operating temperature . Generally the normal operating temperature of semiconductor devices is lower than 80 degrees , when the PN junction temperature within the LED reaches 140 degrees When it does , it will fail . In normal operation , its own temperature will be emitted through the pin or dedicated base , and then sent to the surrounding air through the circuit board or aluminum substrate connected to the pin to ensure that the LED normal work . Generally speaking , the single-crystal power is more than 0.2W , and aluminum substrates must be used for heat dissipation , and aluminum and aluminum heat sinks must be added for high power . This is related to the number and density of leading in the entire lamp . Power LEDs also needs / needed to consider thermal designs / designed of thermal materials . This is like every electronic product of you , such as : TVs , monitors , computer hosts , etc . Incorrect thermal designs / designed will directly lead to shortened LED life and faster light decay speed 1 . Now most of the upper end of the junction temperature can be about 120 degrees , the higher are 150 degrees . 2 . The lamp bead thermal resistance varies according to the structure of the package material , some multi-chip up to dozens , single-chip Usually it is single digits , at most a dozen , . Of course , this is directly related to the junction temperature , which is related to the important parameters such as the life span of the LED thermal conductive silicone film , light efficiency , etc . 3 . At present , most of the LED lamp design life is 20000~50000H , which is determined by many factors , firstly IC , etc . The life of the lamp limits the lifespan of the entire lamp . 4 . In terms of to heat dissipation , the structure layout is actually the problem of thermal resistance and thermal conduction bottleneck . This involves more and is not listed well . Generally speaking , it is a structural one , large A good area of ''contact . PCB above the lamp as much as possible to avoid the concentration of heat sources . 5 . The higher the driving efficiency , the better , of course , as far as possible the principle of the layout of the largest heat source , that is , LED lamp beads . You can use plastic , etc , to achieve the effect of fixed insulation insulation . Comprehensive considerations : a good thermal design temperature rise is best controlled in 35 or less . Junction temperature below 80 . Theoretical life above 50,000 .