Datasheet

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_2500S20_0207
The Bergquist Company -
North American Headquarters
18930 West 78th Street
Chanhassen, MN 55317
Phone: [phone]
Fax: [phone]
The Bergquist Company - Europe
Bramenberg 9a, 3755 BT Eemnes
Netherlands
Phone: [phone]
Fax: [phone]
The Bergquist Company - China
Rm. 7C, Aihe Mansion
No. 629 Ling Ling Road
Shanghai, China 200030
Ph: 86-21-6464-2206
Fax: [phone]
Gap Pad
®
2500S20
Features and Benefits
• Thermal conductivity: 2.4 W/m-K
• Low “S-Class” thermal resistance at
ultra-low pressures
• Ultra conformable,“gel-like” modulus
• Designed for low-stress applications
• Fiberglass reinforced
Gap Pad 2500S20 is a thermally conductive,
reinforced material rated at a thermal
conductivity of 2.4 W/m-K.The material is a
filled-polymer material yielding extremely soft,
elastic characteristics.The material is reinforced
to provide easy handling, converting, added
electrical isolation and tear resistance. Gap
Pad 2500S20 is well suited for low-pressure
applications that typically use fixed standoff or
clip mounting.The material has a conformable
yet elastic nature that allows for excellent
interfacing and wet-out characteristics, even
to rough surfaces and/or topography.
Gap Pad 2500S20 is offered with inherent
natural tack on both sides of the material
allowing for stick-in-place characteristics during
application assembly.The material is supplied
with protective liners on both sides.
Note: Resultant thickness is defined as the final gap
thickness of the application.
Typical Applications
• Between processors and heat sinks
• Between graphics chips and heat sinks
• DVD and CDROM electronics cooling
• Area where heat needs to be transferred to a frame, chassis or other type of heat spreader.
Configurations Available:
• Sheet form and die-cut parts
Building a Part Number Standard Options
Gap Pad
®
: U.S. Patent 5,679,457 and others.
Highly Conformable,Thermally Conductive, Reinforced “S-Class” Gap Filling Material
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.
GP2500S20 = Gap Pad 2500S20 Material
GP2500S20 0.100 02 00 ACME 89302 Rev a
Note: To build a part number, visit our website at www.bergquistcompany.com.
Standard thicknesses available: 0.010", 0.015", 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 2500S20
PROPERTY IMPERIAL VALUE METRIC VALUE TEST METHOD
Color Light Yellow Light Yellow Visual
Reinforcement Carrier Fiberglass Fiberglass —
Thickness (inch) / (mm) 0.010 to 0.125 0.254 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) 20 20 ASTM D2240
Young’s Modulus (psi) / (kPa) (2) 5 35 ASTM D575
Continuous Use Temp (°F) / (°C) -76 to 392 -60 to 200 —
ELECTRICAL
Dielectric Breakdown Voltage (Vac) >3000 >3000 ASTM D149
Dielectric Constant (1000 Hz) 6.6 6.6 ASTM D150
Volume Resistivity (Ohm-meter) 10
11
10
11
ASTM D257
Flame Rating V-O V-O U.L. 94
THERMAL
Thermal Conductivity (W/m-K) 2.4 2.4 ASTM D5470
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
. For more information on Gap Pad
modulus, refer to Bergquist Application Note #116.
0.18 0.43 1.180.68 0.93 1.43 1.68 1.93 2.18
130
110
90
70
50
30
10
Thickness vs. Thermal Resistance
Gap Pad 2500S20
Thermal Resistance (°C-in
2
/W)
Resultant Thickness (mils)