Poly-Pad
®
K-4
November 2013
PRODUCT DESCRIPTION
Polyester-Based,Thermally
Conductive Insulation Material
FEATURES AND BENEFITS
• Thermal impedance: 0.95°C-in
2
/W
(@50 psi)
• Polyester based
• For applications requiring non-silicone
conformal coatings
• Designed for silicone-sensitive
applications
• Excellent dielectric and physical strength
PROPERTY
Color
TYPICAL PROPERTIES OF POLY-PAD K-4
IMPERIAL VALUE
Tan
Polyimide
0.006
90
30
40
5000
-4 to 302
6000
5.0
10
12
METRIC VALUE
Tan
Polyimide
0.152
90
5
40
34
-20 to 150
6000
5.0
10
12
TEST METHOD
Visual
—
ASTM D374
ASTM D2240
ASTM D1458
ASTM D412
ASTM D412
—
ASTM D149
ASTM D150
ASTM D257
U.L.94
ASTM D5470
Reinforcement Carrier
Thickness (inch) / (mm)
Hardness (Shore A)
Breaking Strength (lbs/inch) / (kN/m)
Elongation (%)
Tensile Strength (psi) / (MPa)
Continuous Use Temp (°F) / (°C)
ELECTRICAL
Dielectric Breakdown Voltage (Vac)
Dielectric Constant (1000 Hz)
Volume Resistivity (Ohm-meter)
Flame Rating
THERMAL
Thermal Conductivity (W/m-K)
V-O
0.9
10
5.64
1.55
25
5.04
1.21
V-O
0.9
50
4.34
0.95
THERMAL PERFORMANCE vs PRESSURE
Pressure (psi)
TO-220 Thermal Performance (°C/W)
Thermal Impedance (°C-in /W) (1)
2
100
3.69
0.70
200
3.12
0.46
1) The ASTM D5470 test fixture was used.The recorded value includes interfacial thermal resistance.These values are provided for
reference only. Actual application performance is directly related to the surface roughness, flatness and pressure applied.
Poly-Pad
®
K-4 is a composite of film
coated with a polyester resin.The material
is an economical insulator and the film
carrier provides excellent dielectric and
physical strength.
Polyester-based, thermally conductive
insulators from Bergquist provide a
complete family of materials for
silicone-sensitive applications.
Poly-Pads are ideally suited for
applications requiring conformal
coatings or applications where silicone
contamination is a concern (telecomm
and certain aerospace applications).
Poly-Pads are constructed with
ceramic-filled polyester resins coating
either side of a fiberglass carrier or a
film carrier. The Poly-Pad
®
family offers
a complete range of performance
characteristics to match individual
applications.
Note: To build a part number, visit our
website at www.bergquistcompany.com.
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
PDS_PP_K4_November 2013
TDS Poly-Pad
®
K-4, November 2013
Disclaimer
Note:
The information provided in this Technical Data Sheet (TDS) including the
recommendations for use and application of the product are based on our
knowledge and experience of the product as at the date of this TDS. The product
can have a variety of different applications as well as differing application and
working conditions in your environment that are beyond our control. Henkel is,
therefore, not liable for the suitability of our product for the production processes
and conditions in respect of which you use them, as well as the intended
applications and results. We strongly recommend that you carry out your own
prior trials to confirm such suitability of our product.
Any liability in respect of the information in the Technical Data Sheet or any other
written or oral recommendation(s) regarding the concerned product is excluded,
except if otherwise explicitly agreed and except in relation to death or personal
injury caused by our negligence and any liability under any applicable mandatory
product liability law.
In
case products are delivered by Henkel Belgium NV, Henkel Electronic
Materials NV, Henkel Nederland BV, Henkel Technologies France SAS and
Henkel France SA please additionally note the following:
In case Henkel would be nevertheless held liable, on whatever legal ground,
Henkel’s liability will in no event exceed the amount of the concerned delivery.
In case products are delivered by Henkel Colombiana, S.A.S. the following
disclaimer is applicable:
The information provided in this Technical Data Sheet (TDS) including the
recommendations for use and application of the product are based on our
knowledge and experience of the product as at the date of this TDS. Henkel is,
therefore, not liable for the suitability of our product for the production processes
and conditions in respect of which you use them, as well as the intended
applications and results. We strongly recommend that you carry out your own
prior trials to confirm such suitability of our product.
Any liability in respect of the information in the Technical Data Sheet or any other
written or oral recommendation(s) regarding the concerned product is excluded,
except if otherwise explicitly agreed and except in relation to death or personal
injury caused by our negligence and any liability under any applicable mandatory
product liability law.
In case products are delivered by Henkel Corporation, Resin Technology
Group, Inc., or Henkel Canada Corporation, the following disclaimer is
applicable:
The data contained herein are furnished for information only and are believed to
be reliable. We cannot assume responsibility for the results obtained by others
over whose methods we have no control. It is the user’s responsibility to
determine suitability for the user’s purpose of any production methods mentioned
herein and to adopt such precautions as may be advisable for the protection of
property and of persons against any hazards that may be involved in the handling
and use thereof. In light of the foregoing,
Henkel Corporation specifically
disclaims all warranties expressed or implied, including warranties of
merchantability or fitness for a particular purpose, arising from sale or use
of Henkel Corporation’s products. Henkel Corporation specifically
disclaims any liability for consequential or incidental damages of any kind,
including lost profits.
The discussion herein of various processes or
compositions is not to be interpreted as representation that they are free from
domination of patents owned by others or as a license under any Henkel
Corporation patents that may cover such processes or compositions. We
recommend that each prospective user test his proposed application before
repetitive use, using this data as a guide. This product may be covered by one or
more United States or foreign patents or patent applications.
Trademark usage
Except as otherwise noted, all trademarks in this document are trademarks of
Henkel Corporation in the U.S. and elsewhere. ® denotes a trademark
registered in the U.S. Patent and Trademark Office
Reference 0.1
Americas
+1.800.347.4572
Europe
+31.35.5380684
For the most direct access to local sales and technical support visit: www.bergquistcompany.com
Asia
+852.2690.9296
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