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 manufacturer s’ 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
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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_VOS_12.08
The Bergquist Company -
North American Headquarters
18930 West 78th Street
Chanhassen, MN 55317
Phone: 800-347-4572
Fax: 952-835-0430
The Bergquist Company -
European Headquarters
Bramenber g 9a, 3755 BT Eemnes
Netherlands
Phone: 31-35-5380684
Fax: 31-35-5380295
The Bergquist Company - Asia
Room 15,8/F W ah Wai Industrial Centre
No.38-40,Au Pui Wan Street
Fotan, Shatin, N.T. Hong Kong
Ph: 852.2690.9296
Fax: 852.2690.2344
Gap Pad
®
VO Ultra Soft
Ultr a Confor mable ,Ther mally Conductive Material for Filling Air Gaps
Gap Pad ®: U.S.Patent 5,679,457 and others
Features and Benefits
• Thermal conductivity: 1.0 W/m-K
• Highly conformable, low hardness
• “Gel-like”modulus
• Designed for low-stress applications
• Puncture , shear and tear resistant
• Electr ically isolating
Gap Pad VO Ultra Soft is recommended for
applications that require a minimum amount
of pressure on components.The viscoelastic
nature of the mater ial also gives excellent
low-stress vibration dampening and shock
absorbing char acter istics. Gap Pad VO Ultra
Soft is an electrically isolating mater ial, 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.
Typical Applications Include:
• T elecommunications
• Computer and per ipher als
• Power conversion
• Between heat-generating semiconductors or magnetic components and a heat sink
• Area where heat needs to be tr ansferred to a frame , chassis, or other type of heat spreader
Configurations Available:
• Sheet form and die-cut parts
Building a Part Number Standard Options
123 5 846 9710
250
200
150
100
50
0
Thickness vs. Thermal Resistance
Gap Pad VO Ultra Soft
Thermal Resistance (C-in2/W)
Resultant Thickness (mils)
Section A
Section B
Section C
Section D
Section E
NA = Selected standard option. If not selecting a standard
option, insert company name, drawing number, and
revision level.
GPVOUS = Gap Pad VO Ultra Soft Material
GPVOUS 0.100 AC 0816 NA
Note: To build a part number, visit our website at www.bergquistcompany.com.
Standard thicknesses available: 0.020", 0.040", 0.060",
0.080", 0.100", 0.125", 0.160", 0.200", 0.250"
AC = Adhesive on Sil-Pad® side, natural tack on one side
00 = No pressure sensitive adhesive, natural tack on one side
0816 = Standard sheet size 8" x 16", or
00 = custom configuration
––––
TYPICAL PROPERTIES OF GAP PAD VO ULTRA SOFT
PROPERTY IMPERIAL VALUE METRIC VALUE TEST METHOD
Color Mauve/Pink Mauve/Pink Visual
Reinforcement Carr ier Sil-Pad Sil-Pad —
Thickness (inch) / (mm) 0.020 to 0.250 0.508 to 6.350 ASTM D374
Inherent Surface Tack (1- or 2-sided) 1 1 —
Density (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 (1000 Hz) 5.5 5.5 ASTM D150
Volume Resistivity (Ohm-meter) 1011 1011 ASTM D257
Flame Rating V-O V-O U.L. 94
THERMAL
Thermal Conductivity (W/m-K) 1.0 1.0 ASTM D5470
1) Thirty second delay value Shore 00 hardness scale .
2) Young's Modulus, calculated using 0.01 in/min. step r ate of strain with a sample size of 0.79 inch2. For more information on Gap Pad
modulus, refer to Ber gquist Application Note #116.
