IsoEdge
®
Benefits
• U.L. RTI rating of 130°C
• Low thermal impedance 2.2°C/W (TO-220 Test Method)
• Dielectric strength of 650 VAC/mil
• U.L. recognized thermal solution that allows heat sink
placement in very close proximity to components
• Reduces part count and labor at assembly
• Widens operating temperature specifications
• Significantly improves overall thermal performance when
compared to traditional flat heat sinks and pads
• Minimizes gap filler thickness
• Custom configurations available through processes such
as casting, extruding, stamping or machining
• Meets electrical agency requirements
• RoHS compliant
• Manufactured in an ISO9001:2000 certified facility
Dielectric Coated Metal Substrate Optimizes Performance
Technical Data
PR4305 HEAT PLATES
Bergquist
For Additional Info (800) 347-4572
www.bergquistcompany.com
Bergquist IsoEdge
®
technology enables the use of highly
optimized heatsink designs that can effectively increase 3-D
packaging densities, reduce part counts and simplify labor
at assembly. IsoEdge
®
replaces older, flat-based heat sinks
and individual insulators used in combination to meet safety
agency criteria. Past designs limited packaging densities and
performance and required time-consuming assembly, hi-pot
testing and safety approvals. A thin coating of IsoEdge
®
thermally conductive and electrically isolating dielectric
provides excellent heat transfer with inherent 3-D electrical
isolation to meet stringent safety agency requirements.
Bergquist Thermal Clad
®
IsoEdge
®
Heat Plates minimize
thermal impedance and conduct heat effectively and
efficiently in high watt-density DC/DC converters.
Typical Values of IsoEdge Heat Plates
PR4305 VALUE
TEST
METHOD
PHYSICAL
Color Black
Visual
Thickness (inch / mm)
0.004- 0.010 /
0.102- 0.254
ASTM D374
Glass Transition (ºC / ºF)
110 - 120 /
230 - 248
ASTM E1356
MOT RTI Temperature (ºC / ºF) 130 / 266 U.L. 746B
Flame Rating VO U.L. 94
ELECTRICAL
Dielectric Strength (VAC/mil) 650 ASTM D149
Permittivity (Dielectric Constant) 6 ASTM D150
THERMAL PROPERTIES
Post-Cured Thermal Conductivity (W/m-K) 0.6 ASTM D5470
TO-220 Measurement (ºC/W) 2.2 RD 2018
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_IsoEdge_1114
The Bergquist Company -
North American Headquarters
Phone: 800-347-4572
Fax: 952-835-4156
The Bergquist Company -
European Headquarters
Phone: 31-35-5380684
Fax: 31-35-5380295
The Bergquist Company -
Asian Headquarters
Ph: 852-2690-9296
Fax: 852-2690-3408
Configurations Available
Only on T-Clad IsoEdge
®
Heat Plates
• Machined aluminum plates
• Die-cast aluminum plates
• Extruded aluminum plates
Applications
• High watt-density assemblies for DC/DC converters
IsoEdge
®
thermally conductive dielectric coating.
Technical Data
PR4305 HEAT PLATES
Bergquist Gap Filler material optimizes the thermal path from the
heat-generating components to the IsoEdge
®
Heat Plate.
IsoEdge
Phoenix
Gap Filler
Material
IsoEdge
®
Bergquist