Thermals: Thermattach® – T404, T405 and T412 Typical Properties

Conduction

Typical Properties T404 T405 T412 Test Method
Carrier Kapton MT Aluminum Expanded AL
Color White Gray -- Visual
Thickness, inch 0.005 0.006 0.009 --
Thickness, Tolerance, inch +0.001 +0.001 +0.001 --

Thermal

Typical Properties T404 T405 T412 Test Method
Thermal Impedance @ <1 psi °C-in2/W 0.6 0.5 0.25 ASTM D5470
Thermal Conductivity, W/m-k 0.37 0.50 1.40 ASTM D5470

Electrical

Typical Properties T404 T405 T412 Test Method
Voltage Breakdown 5000 N/A N/A ASTM D149
Volume Resistivity, ohm-cm 3 x 1014 N/A 1.3 x 10-2 ASTM D257

Mechanical

Typical Properties T404 T405 T412 Test Method
Lap Shear Adhesion, psi 125 135 70 ASTM D1002
Die Shear Adhesion, psi Aluminum
25 °C
125 °C
Copper
25 °C
125 °C
Aluminum Oxide Sub.
25 °C
125 °C
130
50

120
45

170
50
125
55

160
70

145
60
135
25

115
35

125
40		 Chomerics Test Procedure #54
Creep Adhesion, days
25 °C, 12 psi
150 °C, 12 psi
>50
>50
>50
>50
>50
>50 		PSTC-7
Adhesive CTE, ppm/°C
-40 to +150°C		 400 400 400 Chomerics Test Procedure #163