ThermTile Ceramic Heat Sinks and Electrical Insulators From CoorsTek

Topics Covered

Optimize Component Life and Performance

Phase Change Thermal Management Material

Avoid Material and Labor Waste

Optimize Component Life and Performance

A natural choice for both electrical insulation and heat diffusion, CoorsTek ThermTile™ ceramic tiles and films serve the power generation industry and are used to lower the power chip’s operating temperature by dissipating heat build-up. These sinks and insulators extend component life and enhance performance.

Figure 1. Heat transfer through component and air to heat sink

Figure 2. Heat transfer through component, phase-change material to ceramic heat sink

Phase Change Thermal Management Material

Because of CoorsTek innovative application techniques, this specialized phase-change material easily and effectively contacts the power chip, ceramic tile, and aluminum heat sink. CoorsTek’s extremely consistent material thickness coverage dramatically reduces seepage and bare contact situations over traditional application methods and optimizes heat dissipation performance while maintaining superior electrical insulation.

Avoid Material and Labor Waste

         Reduce expensive material waste with cleanly-applied phase-change material

         Speed your assembly process dramatically with ready-to-assemble ThermTileTM packages

         Phase-change material is solid at room temperature and easily handled in manufacturing and assembly environments

         Mess and waste associated with traditional thermal management grease are eliminated

Table 1. Alumna based material properties

Property

Units

Test

AD-96
Nom. 96% Al2O3

AD-995
Nom. 99.5% Al2O3

Density

gm/cc

ASTM-C 20

3.72

3.90

Hardness

GPa (kg/mm2)

Knoop 1000 gm

11.5 (1175)

14.1 (1440)

Thermal Conductivity, 20° C

W/m °K

ASTM-C408

24.7

30.0

CTE, 20° C

1 X 10-6 °C

ASTM-C372

8.2

8.2

Thermal Shock Resistance, DTc

°C

NOTE 3

250

200

Maximum Use Temperature

°C

NO-LOAD COND.

1700

1750

Volume Resistivity, 25° C

Ohm-cm

ASTM-D1829

< 1014

> 1014

Volume Resistivity, 500° C

Ohm-cm

ASTM-D1829

4 x 109

2 x 1010

Volume Resistivity, 1000° C

Ohm-cm

ASTM-D1829

1 x 106

2 x 106

Note: The chart is intended to illustrate typical properties. Engineering data is representative. Property values vary somewhat with method of manufacture, size, and shape of part. This data is not to be construed as absolute and does not construe a warranty for which we assume legal responsibility.

Table 2. Properties of phase change material

Property

Test

Phase-Change Mgmt Material

Color

visual

Grey

Thickness

ASTM-D374

0.05 mm – 0.1 mm

Thermal Conductivity

ASTM-D5470

1 Wm-1 K-1

Contact Thermal Resistance

ASTM-E1530

0.05° C-in/W

Melt Point

ASTM-E794

43.8° C

Volume Resistivity

ASTM-D257

10 Ohm/m

Continuous Use Temp. Max

150° C

 

Source: CoorsTek

 

For more information on this source please visit CoorsTek

 

Date Added: Apr 10, 2007 | Updated: Jun 11, 2013
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