GPVOUS-0.040-00-0816

## **Gap Pad® VO Ultra Soft** 

Ultra Conformable,Thermally Conductive Material for Filling Air Gaps 

## **Features and Benefits** 

- Thermal conductivity: 1.0 W/m-K 

- Highly conformable, low hardness 

- Gel-like modulus 

- Decreased strain 

- Puncture, shear and tear resistant 

- Electrically isolating 

Gap Pad VO Ultra Soft is recommended for applications that require a minimum amount of pressure on components.The viscoelastic nature of the material also gives excellent low-stress vibration dampening and shock absorbing characteristics. Gap Pad VO Ultra Soft is an electrically isolating material, which allows its use in applications requiring isolation between heat sinks and high-voltage, bare-leaded devices. 

_Note:  Resultant thickness is defined as the final gap thickness of the application._ 

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Thickness vs. Thermal Resistance<br>Gap Pad VO Ultra Soft<br>250<br>200<br>150<br>PT ert<br>100<br>Pt [beet]<br>50<br>0  a<br>1  2  3  4  5  6  7  8  9  10<br>Thermal Resistance (C-in [2] /W)<br>Resultant Thickness (mils)<br>**----- End of picture text -----**<br>


|**TYPICAL PROPERTIES OF GAP PAD VO ULTRA SOFT**|**TYPICAL PROPERTIES OF GAP PAD VO ULTRA SOFT**|**TYPICAL PROPERTIES OF GAP PAD VO ULTRA SOFT**|**TYPICAL PROPERTIES OF GAP PAD VO ULTRA SOFT**|**TYPICAL PROPERTIES OF GAP PAD VO ULTRA SOFT**|**TYPICAL PROPERTIES OF GAP PAD VO ULTRA SOFT**|
|---|---|---|---|---|---|
|PROPERTY|IMPERIAL VALUE||METRIC VALUE||TEST METHOD|
|Color<br>Reinforcement Carrier<br>Thickness (inch) / (mm)|Mauve/Pink<br>Fiberglass<br>0.020 to 0.250||Mauve/Pink<br>Fiberglass<br>0.508 to 6.350||Visual<br>—<br>ASTM D374|
|Inherent Surface Tack (1 sided)||1||1|—|
|Density (Bulk Rubber) (g/cc)||1.6||1.6|ASTM D792|
|Heat Capacity (J/g-K)||1.0||1.0|ASTM E1269|
|Hardness (Bulk Rubber) (Shore 00) (1)||5||5|ASTM D2240|
|Young's Modulus (psi) / (kPa) (2)||8||55|ASTM D575|
|Continuous Use Temp (°F) / (°C)||-76 to 392|-60 to 200||—|
|ELECTRICAL||||||
|Dielectric Breakdown Voltage (Vac)||6000||6000|ASTM D149|
|Dielectric Constant (1 Mhz)||5.5||5.5|ASTM D150|
|Volume Resistivity (Ohm-meter)||1011||1011|ASTM D257|
|Flame Rating||V-0||V-0|U.L. 94|
|THERMAL||||||
|Thermal Conductivity (W/m-K)||1.0||1.0|ASTM D5470|
|THERMAL PERFORMANCE vs. STRAIN||||||
|Deflection(% strain)<br>Thermal Impedance (°C-in2/W) 0.040" (3)<br>Thermal Impedance (°C-cm2/W) 1.016mm (3)||||10<br>1.97<br>12.7|20<br>30<br>1.87<br>1.68<br>12.1<br>10.8|



- 1) Thirty second delay value Shore 00 hardness scale. 2)Young’s Modulus, calculated using 0.01 in/min. step rate of strain with a sample size of 0.79 inch[2] . 3) The ASTM D5470 test fixture was used. The recorded value includes interfacial ther- 

- mal resistance. These values are provided for reference only. Actual application performance is directly related to the surface roughness, flatness and pressure applied. 

## **Typical Applications:** 

- Various IC packages 

   - Telecommunications 

- Thermally enhanced BGA packages 

   - Power conversion 

   - Automotive 

- Between any heat-generating semiconductor and a heat sink 

   - LED lighting packages 

- Computers and peripherals 

## **Configurations Available:** 

- Sheet form and die-cut parts 

## **Building a Part Number             Standard Options** 

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To GPVOUS – 0.100 – AC – 0816 – NA example<br>revision level.<br>LL=<br>Note:  To build a part number, visit our website at www.bergquistcompany.com.<br>Section A Section B Section C Section D Section E<br>**----- End of picture text -----**<br>


NA = Selected standard option. If not selecting a standard option, insert company name, drawing number, and revision level. 

- 0816 = Standard sheet size 8" x 16", or 00 = custom configuration 

AC = Adhesive on Sil-Pad[®] side, natural tack on one side 00 = No pressure sensitive adhesive, natural tack on one side Standard thicknesses available:  0.020", 0.040", 0.060", 0.080", 0.100", 0.125", 0.160", 0.200", 0.250" GPVOUS = Gap Pad VO Ultra Soft Material 

Gap Pad[®] : U.S. Patent 5,679,457 and others 

## **www.bergquistcompany.com** 

All statements, technical information and recommendations herein are based on tests we believe to be reliable, and THE FOLLOWING IS MADE IN LIEU OF ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MARKETABILITY AND FITNESS FOR PURPOSE. Sellers’ and manufacturers’ only obligation shall be to replace such quantity of the product proved to be defective. Before using, user shall determine the suitability of the product for its intended use, and the user assumes all risks and liability whatsoever in connection therewith. NEITHER SELLER NOR MANUFACTURER SHALL BE LIABLE EITHER IN TORT OR IN CONTRACT FOR ANY LOSS OR DAMAGE, DIRECT, INCIDENTAL, OR CONSEQUENTIAL, INCLUDING LOSS OF PROFITS OR REVENUE ARISING OUT OF THE USE OR THE INABILITY TO USE A PRODUCT. No statement, purchase order or recommendations by seller or purchaser not contained herein shall have any force or effect unless in an agreement signed by the officers of the seller and manufacturer. PDS_GP_VOUS_0410 

The Bergquist Company - North American Headquarters 18930 West 78th Street Chanhassen, MN 55317 Phone: 800-347-4572 Fax: 952-835-0430 

The Bergquist Company - The Bergquist Company - European Headquarters Asia Headquarters Netherlands Hong Kong Phone: 31-35-5380684 Phone: 852-2690-9296 Fax: 31-35-5380295 Fax: 852-2690-2344