Thermalsil III - Insulating Pads & Films

RoHS Compliant
Thermally Conductive Silicone Rubber Insulators

Composed of a silicone elastomer binder with a thermally conductive filler, Thermasil™ III’s formula has been fully optimized for thermal conductivity. The electrically insulating pads are reinforced with finely woven glass cloth to resist tearing due to burrs and to enhance thermal resistance.

Thermasil™ III eliminates the need for grease application and conforms to mounting surfaces under clamping pressure for optimum heat conduction.

AVAILABLE SIZES:

Thermalsil III is avaliable in standard sizes for TO-3, TO-218 and TO-220 devices as well as in washer and 328ft bulk rolls. The Bulk rolls are offered in three different widths with and without adhesive backing

Any configuration is also avaliable with adhesive backing. Order by adding "AC" after the part number. For example: 53-03-2AC


 Bulk Thermalsil™ III


Thermalsil™ III is also available in three widths, with and without adhesive coated backing (AC). Thermalsil™ III is 0.152mm (0.006") thick.
Part No.* RoHS PCN Width
5300 1.500G N/A 38.10mm (1.500")
5300AC 1.500G 38.10mm (1.500")
5300 2.875G N/A 76.20mm (3.000")
5300AC 2.875G N/A 76.20mm (3.000")
5300 6.000G N/A 152.40mm (6.000")
5300AC 6.000G N/A 152.40mm (6.000")
*Available in full (328 ft.) length rolls only

Standard Thermalsil Configurations




Part Number RoHS PCN A B C D
53-03-2G 42.04 (1.655) 27.00 (1.063) 3.96 (0.156) 1.57 (0.062)
53-03-11G N/A 41.81 (1.646) 28.58 (1.125) 3.96 (0.156) 2.36 (0.093)
53-03-12G N/A 41.91 (1.650) 28.96 (1.140) 3.56 (0.140) 2.36 (0.093)
53-03-14G N/A 39.70 (1.563) 26.67 (1.050) 3.56 (0.140) 2.36 (0.093)
53-03-15G N/A 40.46 (1.593) 27.94 (1.100) 3.96 (0.140) 1.78 (0.070)
53-03-16G N/A 43.18 (1.700) 30.15 (1.187) 3.96 (0.156) 1.60 (0.063)




Part Number A B C D E F G
53-02-95G 23.24 (0.915) 18.80 (0.740) 16.26 (0.640) 6.99 (0.275) 9.40 (0.370) 5.59 (0.220) 3.66 (0.144)
53-02-103G** 23.80 (0.937) 19.05 (0.750) 16.66 (0.656) 7.14 (0.281) 9.53 (0.375)
3.18 (0.125)
53-78-3G* ** 25.40 (1.000) 20.32 (0.800)








Part Number RoHS PCN A B C D
53-77-2G 17.50 (0.687) 14.27 (0.562) 5.54 (0.218) 3.18 (0.125)
53-77-3G 17.50 (0.687) 41.27 (0.562) 4.70 (0.185) 2.36 (0.093)
53-77-4G 19.05 (0.750) 12.70 (0.500) 4.75 (0.187) 3.73 (0.147)
53-77-5G N/A 20.32 (0.800) 15.24 (0.600) 5.54 (0.218) 2.79 (0.110)
53-77-9G N/A 18.42 (0.725) 13.21 (0.520) 4.32 (0.170) 2.92 (0.115)
53-77-10G N/A 20.96 (0.825) 22.99 (0.905) 5.33 (0.210) 3.68 (0.145)
53-77-11G N/A 26.16 (1.030) 13.21 (0.520) 3.81 (0.150) 3.30 (0.130)
53-77-13G N/A 18.03 (0.710) 12.70 (0.500) 4.06 (0.160) 3.58 (0.141)
53-78-1G* N/A 22.10 (0.870) 15.70 (0.620)





Part Number A B
53-02-10G 14.27 (0.562) 5.16 (0.203)
53-02-25G 20.62 (0.812) 6.73 (0.266)
* This insulator is made especially for clip-mount heat sinks, thus requiring no mounting hole.
** These insulators may also be used for TO-3P and TO-247 devices.

Thermalsil™ III


PropertyTypical Value 25°CTest Method
Electrical
Dielectric Constant2.5@50 Hz
2.5@103 Hz
2.5@106 Hz
ASTM D150
Dielectric Breakdown Voltage26.3 x 103 volts/mm (667 volts/mil) ASTM D-149ASTM D149
Volume Resistivity5.7 x 1015 ohm-cmASTM D257
Dielectric Dissipation Factor.008@50 Hz
.004 @103 Hz
.004 @106 Hz
ASTM D150
Physical
Thickness.15 + .03/-.05mm
(0.006 + .001/-.002 in.)

ColorGray-Green
Tensile Strength6.1 x 107 Pa (8786 psil)
Hardness, Shore A87
Elongation2% or less
Thermal
Thermal Conductivity0.92 w/m °C
Flame ResistanceUL 94V-0 UL card #E-58126 (S)
Service Temperature-60°C to 180°C
(-76°F to 356°F)



Product Information*

Product Name SuperThermal A072 SuperThermal B132 SuperThermal C128 SuperThermal D089

Thermal Properties
Thermal Conductivity (W/mK) 7.2 13.2 12.8 8.9
Operating Temp. Range (°C) -40° - 150° -40° - 150° -40° - 150° -40° - 150°
Thermal Resistance at 10psi (at % Strain)** 2.0 (at 18%) 1.1 (at 19%) 0.78 (at 9.6%) 0.98 (at 22%)
Thermal Resistance at 20psi (at % Strain)** 1.9 (at 27%) 1.1 (at 26%) 0.72 (at 16%) 0.84 (at 24%)
Thermal Resistance at 40psi (at % Strain)** 1.6 (at 31%) 0.98 (at 39%) 0.60 (at 30%) 0.58 (at 29%)

Mechanical Properties
Color Black/ Dark Grey Grey Black Black
Adhesion Double-Sided Double-Sided Non-Adhesive Non-Adhesive
Base Material Silicone Silicone Silicone Silicone
Carrier / Reinforcement PET Film PET Film PET Film PET Film
Hardness (ASTM D2240, Shore 00) 63 55 65 77
Density (g/cm3) 1.8 2.4 2.4 2.4
Tensile Strength (kPa) 33 22 16 44
Thickness Availability (mm) 1, 2 or 3mm 1, 2 or 3mm 0.5 or 1mm 0.2 or 1mm

Electrical Properties
Volume Resistivity (Ω-m) ≥1010 ≥1010 ≥100 ≥100
Breakdown Voltage (kVAC) ≥1.0 ≥0.9 ≥0.1 ≥0.1
Flammability Rating UL94 V-0 V-0 V-0 V-0

* Measurement is for 1mm thickness, information on additional thicknesses is available on request.
** Strain is the ratio of the reduction in pad thickness to the initial thickness of the pad. Thermal resistance is measured in (°C x cm2/W).
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