Thermals: Therm-A-Gap® – T274 and A274 Typical Properties

Conduction

Typical Properties T274 A274
Composition Aluminum Oxide Filled Silicone on Fiberglass Reinforced Carrier Aluminum Oxide Filled Silicone on Aluminum Foil Carrier
Color Blue/Green Green/Aluminum
Thickness, tolerance .004-.010 .002-.010
Thickness, inch .040-.200 .020-.200

Thermal

Typical Properties T174 A174
Thermal Impedance @ 10 psi °C-in2/W Flat - 1.7-4.5
Ribbed - 2.0-4.6		 Flat - 0.9-4.1
Ribbed - 1.9-4.4
Thermal conductivity, W/m-k @10 psi 0.9 0.9
Operating Temperatures Range -50 to +200 -50 to +200

Electrical

Typical Properties T274 A274
Dielectric Strength, Vac/mil >300 Not applicable

Mechanical

Typical Properties T274 A274
Adhesive Shelf Life 6 months 12 months
Adhesive Peel Strength oz/in 12 16
Hardness <15 <15
Specific Gravity 2.2 2.0
Flammability Rating (UL 94) V-0 V-0