3M TCG-2037, TCG-2033 TECHNICAL DATA

3M™Thermally Conductive Grease TCG-2037 / TCG-2033

Product Description

3M™ Thermally Conductive Grease TCG-2037 is a high performance thermal interface material for transferring thermal

energy from a heat source (e.g.: processor chip, graphics chip, etc.) to a heat sinking or heat spreading surface. The 3M

Grease TCG-2037’s blend of inorganic fillers in a non-silicone resin system provides for excellent bulk thermal

conductivity along with very low thermal resistance.

3M™ Thermally Conductive Grease TCG-2033 has a lower viscosity versus the 3M™ Thermally Conductive Grease

TCG-2037 as a small amount of solvent has been blended into the product. The lower viscosity of the 3M Grease

TCG-2033 can allow for a thinner bond line leading to improved thermal resistance and is also designed for use in

screen printing applications.

Key Features

• Superior bulk conductivity.

• Non-silicone based formulation.

• Excellent thermal impedance.

• < 40 µ max particle diameter.

• 3M Grease TCG-2033 is screen printable.

3

Technical Data December, 2008

Typical Physical Properties

Note: The following technical information and data should be considered representative or typical only and should not be

used for specification purposes.

G* = 1450 Pa @ 25°C (*360 Pa) G’ = 375 Pa @ 25°C (*210 Pa)

g* = 20 Pa-sec @ 25°C (*5 Pa-sec) d = 2.5 g/cm3(*2.43)

Vol Resistivity = 4.10 x 107 -cm @ 1 kHz

Dielectric Breakdown Strength = 105 Volts/mm

*Information relates to the 3M Grease TCG-2033.

3M™Thermally Conductive Grease TCG-2037 / TCG-2033

Storage and Shelf Life

Product Shelf life is 9 months from date of manufacture when stored in the original product container and packaging

materials and stored at room temperature (18-24°C) and 50% RH.

To ensure best uniformity of conductive fillers, the product should be mixed prior to use to ensure uniform distribution of

fillers.

Directions for Use

Apply the product at the desired interface and use pressure (from approximately 1-25 psi applied at a variable or constant

force as determined by end user) when bringing the substrate interfaces together. Pressure is applied until the desired gap

thickness is achieved. Apply sufficient product to ensure good gap filling at the desired final nominal gap thickness

(Sufficient product volume use can be demonstrated by having a small amount of squeeze-out at the edges of the interface).

Heat can be applied (40-50°C) to lower the product viscosity to aid in product flow and for establishing a desired gap

thickness.

The 3M™ Thermally Conductive Grease TCG-2033 product contains a small amount of solvent to lower viscosity and

allow for screen printing. Screen print to a desired surface and allow product to rest open faced for 2-10 minutes at room

temperature to allow solvent to evaporate prior to assembly. Review MSDS for detailed use information.

Typical Performance Characteristics

Note: The following technical information and data should be considered representative or typical only and should not be

used for specification purposes.

k = 3.0 W/m-K

Thermal Impedance: 0.017 C-in2/W (0.109 C-cm2/W) (Thermal Impedance measured with a modified 3M ASTM-D5470 Test Method)

(2)