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
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replace such quantity of the product proved to be defective. Before using, user shall determine the suitability of the product
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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_HF_105_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
Hi-Flow
®
105
Phase Change Coated Aluminum
Features and Benefits
• Thermal impedance:
0.37°C-in2/W (@25 psi)
• Used where electrical isolation is
not required
• Low volatility – less than 1%
• Easy to handle in the manufacturing
environment
• Flows but doesn’t run like grease
Hi-Flow 105 is a phase change material coated
on both sides of an aluminum substrate. It is
designed specifically to replace grease as a
thermal interface, eliminating the mess,
contamination and difficult handling associated
with grease . Hi-Flow 105 is tack-free and
scr atch resistant at room temperature and
does not require a protective liner in shipment
when attached to a heat sink.
At 65°C (phase change temperature),
Hi-Flow 105 changes from a solid and flows,
thereby assuring total wet-out of the interface .
The thixotropic characteristics of Hi-Flow 105
reduce the pump-out from the interface .
Hi-Flow 105 has thermal performance equal
to grease with 0.10°C-in2/W contact ther mal
resistance.
Typical Applications Include:
• Power semiconductors
• Microprocessor s mounted on a heat sink
• Power conversion modules
• Spring or clip mount applications where thermal grease is used
Configurations Available:
• Sheet form, die-cut parts and roll form
• With or without pressure sensitive adhesive
Building a Part Number Standard Options
Hi- Flow®: U.S. Patents 6,197,859 and 5,950,066.
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.
HF105 = Hi-Flow 105 Phase Change Material
HF105 0.0055 AC 12/250 NA
Note: To build a part number, visit our website at www.bergquistcompany.com.
Standard thicknesses available: 0.0055"
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 HI-FLOW 105
PROPERTY IMPERIAL VALUE METRIC VALUE TEST METHOD
Color Dar k Gr ay Dar k Gr ay Visual
Reinforcement Carr ier Aluminum Aluminum —
Thickness (inch) / (mm) 0.0055 0.139 ASTM D374
Continuous Use Temp (°F) / (°C) 266 130 —
Phase Change Temp (°F) / (°C) 149 65 ASTM D3418
ELECTRICAL
Dielectric Constant (1000 (Hz) 3.2 3.2 ASTM D150
Flame Rating V-O V-O U.L. 94
THERMAL
Thermal Conductivity (W/m-K) (1) 0.9 0.9 ASTM D5470
THERMAL PERFORMANCE vs PRESSURE
Pressure (psi) 10 25 50 100 200
TO-220 Ther mal Performance (°C/W) 0.95 0.80 0.74 0.69 0.64
Thermal Impedance (°C-in2/W) (2) 0.39 0.37 0.36 0.33 0.30
1) This is the measured ther mal conductivity of the Hi-Flow coating. It represents one conducting layer in a three-layer laminate.The
Hi-Flow coatings are phase change compounds.These layers will respond to heat and pressure induced stresses.The overall conductivity
of the material in post-phase change , thin film products is highly dependent upon the heat and pressure applied.This character istic is
not accounted for in ASTM D5470. Please contact Ber gquist Product Management if additional specifications are required.
2) The ASTM D5470 test fixture was used and the test sample was conditioned at 70°C pr ior to test.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.
