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_SP_A1500_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
Bramenberg 9a, 3755 BT Eemnes
Netherlands
Phone: 31-35-5380684
Fax: 31-35-5380295
The Bergquist Company - Asia
Room 15, 8/F Wah Wai Industrial Centre
No. 38-40, Au Pui Wan Street
Fotan, Shatin, N.T. Hong Kong
Ph: 852.2690.9296
Fax: 852.2690.2344
Sil-Pad
®
A1500
Electr ically Insulating,Ther mally Conductive Elastomeric Mater ial
Features and Benefits
• Thermal impedance:
0.42°C-in2/W (@50 psi)
• Elastomeric compound coated on
both sides
Ber gquist Sil-Pad A1500 is a silicone-based,
ther mally conductive and electrically insulating
material. It consists of a cured silicone
elastomeric compound coated on both sides
of a fiberglass reinforcement layer.
Sil-Pad A1500 performs well under clamping
pressure up to 200 psi and is an excellent
choice for high performance applications
requiring electrical isolation and cut-through
resistance.
Typical Applications Include:
• Power supplies
• Automotive electronics
• Motor controls
• Power semiconductor s
Configurations Available:
• Sheet form, die-cut parts, and roll form
• With or without pressure sensitive adhesive
Building a Part Number Standard Options
Sil-Pad®: U.S. Patents 4,574,879; 4,602,125; 4,602,678; 4,685,987; 4,842,911 and others
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.
SPA1500 = Sil-Pad A1500 Material
SPA1500 0.010 AC 12/250 NA
Note: To build a part number, visit our website at www.bergquistcompany.com.
Standard thicknesses available: 0.010"
AC = Adhesive, one side
00 = No adhesive
_ _ _ = Standard configuration dash number,
1212 = 12" x 12" sheets, 12/250 = 12" x 250' rolls, or
00 = custom configuration
––––
TYPICAL PROPERTIES OF SIL-PAD A1500
PROPERTY IMPERIAL VALUE METRIC V ALUE TEST METHOD
Color Green Green Visual
Reinforcement Carr ier Fiberglass Fiberglass —
Thickness (inch) / (mm) 0.010 0.254 ASTM D374
Hardness (Shore A) 80 80 ASTM D2240
Breaking Strength (lbs/inch) / (kN/m) 65 12 ASTM D1458
Elongation (% - 45° to Warp andFill) 40 40 ASTM D412
Continuous Use Temp (°F) / (°C) -76 to 356 -60 to 180 —
ELECTRICAL
Dielectric Breakdown Voltage (Vac) 6000 6000 ASTM D149
Dielectric Constant (1000 Hz) 7.0 7.0 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) 2.0 2.0 ASTM D5470
THERMAL PERFORMANCE vs PRESSURE
Pressure (psi) 10 25 50 100 200
TO-220 Thermal Perfor mance (°C/W) 3.03 2.62 2.21 1.92 1.78
Thermal Impedance (°C-in2/W) (1) 0.59 0.50 0.42 0.34 0.31
1) The ASTM D5470 test fixture was used.The recorded value includes interfacial thermal resistance .These
values are provided for reference only.Actual application perfor mance is directly related to the surface roughness, flatness and
pressure applied.
