Advantages of ceramic heat sink substrates
Time: 2019-01-26 Writer: mingrui
Advantages of ceramic heat sink substrates
Ceramic heat sink substrate must be you should be more clear, ceramic heat sink substrate is a kind of heat to electrical appliances electronic components device, is something we often use, but it is not common, so what are the advantages of ceramic heat sink substrate small make up to give you an introduction.
Advantages of ceramic heat dissipation substrate:
1. radiating ceramic substrate, the biggest characteristic is ceramic itself micro hole structure, maximum limit increased the contact with the air cooling area greatly improve the heat dissipation effect, compared to the same conditions, under the conditions of natural convection cooling effect than super copper and aluminum, active in a closed environment radiation cooling capacity 8.8 times and metal materials, heat dissipation will be more obvious advantages.
2., ceramic heat dissipation substrate can endure very large current, can also play high voltage, can prevent leakage breakdown, absolutely will not with MOS and other power tube coupling parasitic capacitance and will therefore simplify the filtering process;The required creepage distance is shorter than that required by the metal body, which further saves the plate space and is more conducive to the design of engineers and the passing of electrical certification.
3. ceramic heat sink substrate heat capacity is small, can be direct heat dissipation, absolutely not like metal heat sink like the formation of "heat ladder" influence its heat dissipation;
4. ceramic heat sink substrate itself insulation, high temperature resistance, oxidation resistance, acid and alkali resistance, cold and heat shock resistance, low thermal expansion coefficient, to ensure the stability of the ceramic heat sink in the high and low temperature environment or other harsh environment;
Characteristics of ceramic heat sink substrate:
Radiating ceramic substrate superior heat dissipation due to micro hole structure of ceramic heat sink surface area than metal radiator more than about 20% of the pore, and air convection media have greater contact area so can in the same unit time take more heat, combined with the ceramic heat sink radiation to 8.8 times stronger than the metal material.
Ceramic heat sink substrate itself is almost non-conductive, can withstand large current, can play high voltage, can put leakage breakdown, no noise is a good insulator is not other metal materials heat sink.Ceramic heat sink is suitable for insulation heat sink.
Advantages of ceramic heat sink:
1, ceramic heat capacity is small, itself does not store heat, direct heat dissipation, not like metal heat sink like the formation of "heat ladder", affect heat dissipation;
2, the biggest characteristic, is the ceramic itself micro hole structure, greatly increase the contact with the air of the cooling area, greatly enhance the cooling effect, compared to the same conditions, in the condition of natural convection, heat dissipation effect than super copper, aluminum, airtight environment, active radiation cooling capacity 8.8 times and metal materials, heat dissipation advantages more apparent.
3, ceramic insulation, high temperature resistance, oxidation resistance, acid and alkali resistance, cold and heat shock resistance, low thermal expansion coefficient, to ensure the stability of ceramic heat sink in high and low temperature environment or other harsh environment;
4, ceramic can withstand large current, can play high voltage, can prevent leakage breakdown, no noise, will not produce coupling with MOS power tube parasitic capacitance, and therefore simplify the filtering process;The required creepage distance is shorter than that required by metal body, which further saves plate space and is more conducive to the design of engineers and the passing of electrical certification.
5, ceramics can effectively prevent interference, anti-static effect, and moisture absorption, dust, does not affect the effect;
6, ceramic small size, light weight, do not take up space, save materials, save freight, more conducive to the rational layout of product design;
7, ceramics belong to inorganic materials, more in line with environmental protection;
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