Shin-Etsu Silicone : Thermal interface silicone rubber

26 Feb.,2024

 

Thermal interface silicone rubber

The TC series is a line of products made of thermal interface silicone rubbers which offer superior electrical insulation. Special fillers have been added to boost heat-dissipating performance. The products of Low-hardness TC series are elastic, have good adhesion to heating elements and heat-sinks, and offer highly effective heat dissipation.


Features

Heat dissipation

These products have superior thermal conductivity, elasticity, and adhesiveness (Low-hardness type), so they offer highly effective heat dissipation.

Typical Products

Application/Type Grade Thermal conductivity
W/mK Features ISO
22007-2 ASTM E 1530 High-hardness
Thermal Interface
Silicone Rubber Sheet
Type TC-A 0.8 1.1 General purpose.
Thickness: 0.20, 0.30, 0.45, 0.80 mm TC-CG 1.7 1.9 TC-EG 3.1 4.5 High thermal conductivity.
Thickness: 0.20, 0.30, 0.45 mm TC-BG 7.3 5.0 High thermal conductivity.
Thickness: 0.20, 0.30, 0.45, 0.80 mm TC-15CG-5HSV 1.5

-

  TC-15TCI 0.6*2 1.2*2 High insulation. Cap
Type TC-A-CP 0.8 1.1 General purpose.
Thickness: 0.30, 0.45, 0.80 mm TC-C-CP 1.8 1.5 Medium thermal conductivity.
Thickness: 0.30, 0.45, 0.80 mm TC-S2-CP 2.0 2.0 High thermal conductivity.
Thickness: 0.30, 0.45, 0.80 mm Tube
Type TC-A-KT 0.8 1.1 General purpose.
Thickness: 0.30, 0.45, 0.80 mm Thermal Interface Silicone
Soft Pads TC-HSV-1.4 1.2 1.4 Single layer. TC-TXS 3.3 5.0 Single layer. TC-TXS2 3.3 5.0 Single layer. TC-TXE 3.3 5.0 Double layer. Thermal Interface Silicone
Ultra Soft Pads TC-SP-1.7 1.5 1.7 Double layer.
Exceptional flexibility (hardness: 2 [Asker C]). TC-SPA-3.0 2.3 3.0 Single layer.
Exceptional flexibility (hardness: 4 [Asker C]). TC-CAS-10 1.8

-

Excellent cost performance. TC-CAB-10 2.3

-

TC-CAD-10 3.2

-

TC-CAT-20 4.5

-

Double Sided
Thermal Interface
Silicone Tapes TC-10SAS 1.0*1

-

Strong and stable adhesive strength without screws. TC-20SAS 1.0*1

-

Thermal Interface
Phase Change Materials PCS-LT-30 3.0*1

-

Low thermal resistance. PCS-CR-10 2.0*1

-

Low thermal resistance,
Electrically insulated. Electromagnetic Noise Suppression
and Thermal Interface
Silicone Rubber Sheets EMI-TC803 2.5 3.5 Suppresses noise while improving heat dissipation.

*1 Measured by laser flash method.   *2 Calculated values.


Unique TC series

Add another function to TC rubber

High Thermal Conductive Soft Pad with Low Compression Set Property
TC-SET4-20

Features

  • High Thermal conductivity, Low thermal resistance
  • Excellent compressibility and stress relaxation property
  • Excellent workability

Applications

In-vehicle module which particularly long-term heat cycle reliability and vibration reliability are required

1mm

Grade Thermal conductivity  W/m・K Thermal resistance  cm2・K/W ISO22007 50°C/100 psi  ASTM D5470 TC-SET4-20 4.5 1.08

(Not specified values)

Compression set test

Test Method
1) 3 mm thickness pad was cut to 20 x 20 mm size, and sandwiched by polyimide films.
2) Pad sample was compressed to 50% thickness (1.5 mm) with compression tool and spacer.
3) Sample was put into aging chamber. After aging, sample was taken out.
4) Pad sample was released after it returned to room temperature, and the thickness 60 minutes later was measured.


 

Test Results


TC-SET4-20 shows low compression set property.

TC-SET4-20 shows low compression set property.

Low Density and Soft Thermal Conductive Pad  TC-PEN Series

Features

  • The density is reduced while maintaining the same thermal conductivity and handleability as conventional products.
  • Suitable for cooling of in-vehicle equipment and other parts that require weight reduction.

Applications

  • Large area parts such as lithium-ion batteries
  • Devices with non-uniform surfaces

1mm

Grade Thermal conductivity
W/m・K Thermal resistance
cm2・K/W ISO22007 50°C/100 psi  ASTM D5470 TC-100PEN3-10 3.1 1.56 TC-100PEN5-20 5.2 0.95

(Not specified values)

Density comparison with conventional pads

Oil resistant, chemical resistant, low-hardness thermal interface pads
TC-FORS-2-40 Series

Features

  • Oil resistance:

    Products retain thermal conductivity even when used in proximity to engine oil.
  • Chemical resistance:

    Products retain thermal conductivity even when used in proximity to acidic and alkaline fluids.
  • Long-term reliability:

    Products provide long-term, consistent performance in temperatures ranging from −40°C up to 180°C.

Applications

For drawing heat away from electronic components used in automobiles and industrial machinery.

1mm

Grade Thermal conductivity  W/m・K Thermal resistance  cm2・K/W ISO22007 50°C/100 psi  ASTM D5470 TC-FORS-2-40 1.9 2.77

(Not specified values)

ATF Compatibility Test

Test Method
Physical properties were measured after immersing samples in automatic transmission fluid for a specified period at 150°C.

Sample
TC-200FORS-2-40


Appearance of typical silicone thermal conductive soft pad after 500 hrs aging in 150°C ATF

Appearance of typical silicone thermal conductive soft pad after 500 hrs aging in 150°C ATF


 

Test Results

Immersion Time

h

0 1000 -

Density 23°C

cm3

3.18 3.26

Hardness  Asker C

38 59

Thickness

mm

2.00 2.01

Dielectric Breakdown Voltage  In oil

kV

28.0 28.0

Thermal Conductivity

W/m・K

1.94 1.95

(Not specified values)

These products are not suitable for use with all solvents.
Be sure to test to check compatibility with particular oils and fluids before use.

For more information Thermally Conductive Silicone, please get in touch with us!