Problem of heat sink

2015-08-28

Ceramic chemical stability?

  • 1.Steatite 2.7g/cm3 2.K7-H为3.1g/cm3;3.K9-H为3.7g/cm3;
    1. Steatite: 2.7g/cm3
    2. K7-H: 3.1g/cm3
    3. K9-H: 3.7g/cm3
2015-08-28

Ceramic chemical stability?

  • Stable,corrosion resistance

2015-08-28

How high the ceramic heat sink could stand?

  • Above 250 centi degree, if temperature rise gradually, K9-H could stand 1500 centi degree.

2015-08-28

How high voltage the ceramic heat sink could stand?

  • If wall thickness is 1mm, it can stand instantaneous pulse voltage larger than 5000V. 

2015-08-28

Sample lead time of ceramic heat sink?

  • For K9-H & K7-H, the samples lead time is 20 days against the drawing confirmation.
    For steatite, it is 18 days.
2015-08-28

The minimum wall thickness for the ceramic heat sink?

  • Based on the structure and size.
    1. If  0mm-20mm, the overall wall thickness can't be less than 1.5mm, for the transition part, it can't be less than 1.2mm.
    2. If 20mm-40mm, the overall wall thickness can't be less than 2.0mm,for the transition part, it can't be less than 1.5mm. 
    3. If 40mm-60mm, the overall wall thickness can't be less than 2.5mm,for the transition part, it can't be less than 1.8mm.
    4.If 60mm-80mm, the overall wall thickness can't be less than 3.0mm,for the transition part, it can't be less than 2.2mm.
    5. For the above, the overall wall thickness can't be above 5mm, for the specific area, it would be set based on the detailed structure.
2015-08-28

The maint types of heat sink?

  • C37、G45、P45、G50、A55、A60、GU10、MR16、G9、G4、E14 housing;
     ceramic used in luminaire; ceramic PCB; ceramic PCB used for LED.
2015-08-28

Kangrong's advantages compared to our competitors in Hunan and Jiangsu small enterprises?

  • 1. Kangrong owns the most professional R&D team, we can provide professional guidance in the R&D stage, make risk envaluation, shorten the R&D lead time.
    2. Kangrong can provide the overall solution, focus on the heat dissipation simulation, mechanical design.
    3.High quality assurance system.
    4.Scaled production.
    5.Better service and after sales service.
    6.Sound social responsibility.
2015-08-28

Compared with Al, what's the advantages of ceramic?

  • Compared with Al, ceramic is safe, insulating, high voltage resisting,good heat dissipation.
    Ceramic could solve those fixture can't pass high voltage test. And for those LED lamp or fixture with the driver inside, the driver could be made in the non-isolated way, and reduce the overall cost for fixture or lamp.
2015-08-28

What's the thermal dissipation rate of ceramic?

  • 0.95

2015-08-28

What's the main composition of K7-H?

  • SiO2, MgO ,Al2O3 and additive for heat dissipation.

2015-08-28

What's the thermal conductivity of K7-H?

  • 10W/m.K