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
for its intended use, and the user assumes all r isks 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_1500ST_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
Sil-Pad
®
1500ST
Electr ically Insulating,Ther mally Conductive, Soft Tack Elastomer ic Material
Features and Benefits
• Thermal impedance:
0.23°C-in2/W (@50 psi)
• Natur ally tacky on both sides
• Pad is repositionable
• Excellent thermal perfor mance
• Auto-placement and dispensable
Ber gquist Sil-Pad 1500ST (Soft Tack) is a fiber-
glass reinforced thermal interface mater ial
that is naturally tacky on both sides.
Sil-Pad 1500ST exhibits superior ther mal
performance when compared to the
competitor s’ ther mal interface mater ials.
Sil-Pad 1500ST is supplied in sheet or roll
form for exceptional auto-dispensing and
auto-placement in high volume assemblies.
Sil-Pad 1500ST is intended for placement
between an electronic power device and its
heat sink.
Typical Applications Include:
• Power supplies
• Automotive electronics
• Motor controls
Configurations Available:
• Sheet form, die-cut parts and slit-to-width roll form
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.
SP1500ST = Sil-Pad 1500ST Material
SP1500ST 0.008 02 1012 NA
Note: To build a part number, visit our website at www.bergquistcompany.com.
Standard thicknesses available: 0.008"
02 = Natural tack, both sides
_ _ _ = Standard configuration dash number,
1012 = 10" x 12" sheets, 10/250 = 10" x 250' rolls (8 mil
only), or 00 = custom configuration
––––
TYPICAL PROPERTIES OF SIL-PAD 1500ST
PROPERTY IMPERIAL VALUE METRIC VALUE TEST METHOD
Color Blue Blue Visual
Reinforcement Carr ier Fiberglass Fiberglass —
Thickness (inch) / (mm) 0.008 0.203 ASTM D374
Hardness (Shore 00) 75 75 ASTM D2240
Breaking Strength (lbs/inch) / (kN/m) 1.9 0.34 ASTM D1458
Elongation (% - 45° to Warp andFill) 22 22 ASTM D412
Tensile Strength (psi) / (MPa) 238 1.6 ASTM D412
Continuous Use Temp (°F) / (°C) -76 to 356 -60 to 180 —
ELECTRICAL
Dielectric Breakdown Voltage (Vac) 3000 3000 ASTM D149
Dielectric Constant (1000 Hz) 6.1 6.1 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) 1.8 1.8 ASTM D5470
THERMAL PERFORMANCE vs PRESSURE
Pressure (psi) 10 25 50 100 200
TO-220 Thermal Perfor mance (°C/W) 1.54 1.52 1.51 1.49 1.46
Thermal Impedance (°C-in2/W) (1) 0.37 0.28 0.23 0.21 0.20
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.
