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Thermal insulating pad

TO247 Alumina thermal pad for electronics

  • Materials：Alumina (Al2O3)/ Zirconia(ZrO2) /Si3N4 /SiC ...etc
  • Sizes：Diameter:3-60mm;length:20-650mm
  • Delivery times：2 -25 days(depends on the quantity)
  • Precision：Ra 0.1um tolerance: 0.001mm... etc
  • Features：Heat resistance / Wear resistance / High purity / Refractory / High Corrosion / Good Insulation

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+86181-2297-4730

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admin@cerampart.com

Alumina thermal pad TO247  Type

Alumina thermal pad application for electronics part

Harder than all metal alloys, aluminium ceramic is an exceptional material allowing extraordinary performance in a very wide field of applications.
Electrical insulators and thermal conductors.
High resistance to friction, abrasion and compression.

Thermal conductivity: 20 W/m-k
Electrical insulation: 6 kV
Density: < 3.7 g / ml
Resistivity: <101 Ω / cm
Max. operating temperature: 1600 °C
Thermal resistance: 0.3 °C / W

Application: 
Thermal ceramic is mainly used in high power equipment, IC MOS tube, IGBT thermal conduction and insulation, high frequency power supply, communications, mechanical equipment, strong current, high voltage and high temperature product. 

Us can be based on customer drawings and requirements to provide non-standard ceramic accessories and provide related solutions.

Materials:
Property Alumina  Property Zirconia
Bulk density(g/cm3) 3.85-3.93 The density (g/cm3) 6.05
Hardness(HRA≥) 86 Bibulous rate(%) 0
Bending strength（Mpa≥） 300 Thermal expansion coefficient(10-6 /k) 10.5
Maximum service temperature（℃） 1500 Young's modulus of elasticity(Gpa) 210
Linear expansion coefficient（×10-6/℃） 7.15-7.67 Poisson's ratio(/) 0.3
Dielectric constant（εr(20℃,1MHz)） 9.21 Hardness (MPa) 1200
Dielectric loss（tanδ×10-4,1MHz） 2.5 Bending strength (MPa) 950
Volume resistivity（Ω·cm(100℃)） 9.2*1016 The bending strength (MPa) 210
The compressive strength（Mpa≥） 2500 Compressive strength (MPa) 2000
Flexural strength（Mpa≥） 200 Fracture toughness(Mpa.m1/2) 10
Modulus of elasticity（Gpa） 300 Thermal conductivity (W/m.k) 2
Poisson's ratio 0.2 Specific resistivity(Ω.mm2/m) ＞1015
Thermal conductivity Coefficient(W/m·K(20℃)) 20 Maximum service temperature(℃) 1350
Dc breakdown strength 43.7 Acid and alkali corrosion resistance(/) strength
Tensile seal strength(Mpa) 104.4    


Dimensional accuracy Up to 0.001mm
Smoothness Highest possible mirror
Concentricity Up to 0.003mm
Parallelism Up to 0.002mm
The inner hole tolerance The minimum  0.005mm
Straight flute The narrowest 0.1x100mm
The thickness of the size Minimum to 0.02mm
The screw thread Minimum internal thread M2
Cylindricity Up to 0.004mm
The linear tolerance Up to 0.001mm
The smallest aperture The minimum 0.07mm
Visual quality:
1. No cracks,  no dark dots, no contamination and sharp edges;
2. Evenly distributed glaze with very smooth surface

Properties :

1. High Hardness wear resistance
2. High precision
3. Good mechanical strength
4. High temperature and chemical resistance
5. Electric insulation
6. Low thermal expansion
7. Smooth surface finish
8. Thermal Shock Resistance 

Material :  
1. Alumina ceramic
2. Zirconia ceramic
3. Silicone carbide
4. Silicone nitride
Lead-time: 20-30 days for mass production, 7-15 days for samples.
 

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Dongguan Mingrui Ceramic Technology Co., Ltd.
TEL：+8618122974730
MB：+86 181 2297 4730 Tel：+86 746 3386888
Skype：+86 181 2297 4730
Email：admin@cerampart.com
ADD：No. 21, Chuangxing Road, Shangsha Second Industrial Zone, Chang'an Town, Dongguan City