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_2500_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
®
2500
Ther mally Conductive, Un-Reinforced Gap Filling Material
Gap Pad ®: U.S.Patent 5,679,457 and others
Features and Benefits
• Thermal conductivity: 2.7 W/m-K
• High ther mal performance, cost-effective
solution
• Un-reinforced construction for additional
compliancy
• Medium compliancy and conformability
Gap Pad 2500 is a thermally conductive,
electrically insulating, un-reinforced gap filling
material. Gap Pad 2500 is a filled-polymer
material yielding an elastic polymer that allows
for easy handling and converting without the
need for reinforcement.These properties also
allow for good wet-out and interfacing char-
acter istics to su r faces with roughness
and/or topogr aphy.All these characteristics
make this mater ial ideal for applications using
either clip or screw-mounted assemblies.
Gap Pad 2500 is offered with inherent
natural tack on both sides of the material
allowing for stick-in-place character istics
during application assembly.The material is
supplied with protective liner s on both sides.
Note: Resultant thickness is defined as the final gap
thickness of the application.
Typical Applications Include:
• Multiple heat-generating components to a common heat sink
• Gr aphics chips to heat sinks
• Processor s to heat sinks
• Mass stor age dr ives
• Wireline / wireless communications hardware
Configurations Available:
• Sheet form and die-cut parts
Building a Part Number Standard Options
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.
GP2500 = Gap Pad 2500 Material
GP2500 0.100 02 00 ACME 89302 Rev a
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"
02 = Natural tack, both sides
0816 = Standard sheet size 8" x 16", or
00 = custom configuration
––––
TYPICAL PROPERTIES OF GAP PAD 2500
PROPERTY IMPERIAL VALUE METRIC VALUE TEST METHOD
Color Light Brown Light Brown Visual
Reinforcement Carr ier ———
Thickness (inch) / (mm) 0.020 to 0.125 0.508 to 3.175 ASTM D374
Inherent Surface Tack (1- or 2-sided) 2 2 —
Density (g/cc) 3.1 3.1 ASTM D792
Heat Capacity (J/g-K) 1.0 1.0 ASTM E1269
Hardness, Bulk Rubber (Shore 00) (1) 80 80 ASTM D2240
Young’s Modulus (psi) / (kPa) (2) 113 779 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) 6.8 6.8 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) 2.7 2.7 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 Bergquist Application Note #116.
0.20 0.60 1.00 1.40 1.80
120
100
80
60
40
20
0
Thickness vs. Thermal Resistance
Gap Pad 2500
Thermal Resistance (C-in2/W)
Resultant Thickness (mils)
