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_K6_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
®
K-6
The Medium Performance Kapton
®
-Based Insulator
Features and Benefits
• Thermal impedance:
0.49°C-in2/W (@50 psi)
• Physically strong dielectric barr ier against
cut-through
• Medium performance film
Sil-Pad K-6 is a medium perfor mance , film-
based thermally conductive insulator.The film
is coated with a silicone elastomer to deliver
high performance and provide a continuous,
physically strong dielectric bar r ier against
“cut-through” and resultant assembly failures. Typical Applications Include:
• Power supplies • Motor controls
• Power semiconductors
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
Kapton®is a registered trademark of DuPont.
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.
SPK6 = Sil-Pad K6 Material
SPK6 0.006 AC 12/250 NA
Note: To build a part number, visit our website at www.bergquistcompany.com.
Standard thicknesses available: 0.006"
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 K-6
PROPERTY IMPERIAL VALUE METRIC VALUE TEST METHOD
Color Bluegreen Bluegreen Visual
Reinforcement Carr ier Kapton Kapton —
Thickness (inch) / (mm) 0.006 0.152 ASTM D374
Hardness (Shore A) 90 90 ASTM D2240
Breaking Strength (lbs/inch) / (kN/m) 30 5 ASTM D1458
Elongation (%) 40 40 ASTM D412
Tensile Strength (psi) / (MPa) 5000 34 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) 4.0 4.0 ASTM D150
Volume Resistivity (Ohm-meter) 1012 1012 ASTM D257
Flame Rating VTM-O VTM-O U.L.94
THERMAL
Thermal Conductivity (W/m-K) 1.1 1.1 ASTM D5470
THERMAL PERFORMANCE vs PRESSURE
Pressure (psi) 10 25 50 100 200
TO-220 Ther mal Performance (°C/W) 3.24 3.03 2.76 2.45 2.24
Thermal Impedance (°C-in2/W) (1) 0.82 0.62 0.49 0.41 0.36
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.
