Dow Corning® 340 Heat Sink Compound

Dow Corning® 340 Heat Sink Compound

White, non-flowing, highly filled compound, good thermal conductivity

Dow Corning® 340 Heat Sink Compound is thermal coupling of electrical/electronic devices to heat sinks. High thermal conductivity; low bleed; stable at high temperatures.

Primary Use: Thermal coupling of electrical/electronic devices to heat sinks.

Physical Form: White, grease-like silicone heavily filled with heat-conductive metal oxides.

Temperature Range: From -40 to 390°F (-40 to 199°C).

Application: Applied to the base and mounting studs of transistors, diodes and siliconcontrolled rectifiers; thermal coupler for many heat sink devices; high-voltage coronasuppressant; nonflammable coating in flyback transformer connections in TV sets.

Container Sizes: Tubes, cartridges, pails and drums.

Typical Properties
Color White
Nonflowable
Shelf Life = 1800 Days
Specific Gravity @ 25C = 2.1
Thermal Conductivity = 0.67 Watts per meter K
Thickening System Metal Oxide
Viscosity = 542000 mPa.s
Worked Penetration = 290 mm/10