Thermalfilm™ and Thermalfilm™ MT
Thermalfilm™ Polyimide Plastic Films
Thermalfilm™ and Thermalfilm™ MT are low cost polymide plastic insulating films designed
to be an improved replacement for mica. These insulators have a distinctive amber color and
can be easily recognized and assembled on a production line.
Thermalfilm™ MT, made from high performance Kapton™ MT material, provides thermal
conductivity nearly 2-5 times greater than standard Thermalfilm™. Both insulators have an
extremely high resistance to flow or thin out under high compressive stresses, particularly at
elevated temperatures. Excellent physical, mechanical and electrical properties remain nearly
constant over a wide range of temperatures and frequencies. They are radiation resistant,
have no melting points, and have no known organic solvents. The polymide plastic film is UL
listed as a component in UL’s publication “Component – Plastic Material” dated September
18, 1969. The UL card number is E39505R, Guide QMFZ2 filed by E. I. du Pont de Nemours
& Co., Inc. ThermalfilmTM is rated 94-V/0.
ORDERING INFORMATION
For standard pre-cut sizes of ThermalfilmTM
and ThermafilmTM MT see page 102.
ELECTRICAL – TYPICAL VALUE @ 25° C
THERMALFILM™
0.03mm (1-mil)
240 x 103 volts/mm
(6,100 volts/mil)
3.5
PROPERTY
TEST METHOD
THERMALFILM™ MT
177.2 x 103 volts/mm
(4500 volts/mm)
Dielectric strength
ASTM D149-64
4.3
Dielectric constant
ASTM D150-64T
ASTM D150-64T
ASTM D257-61
0.002
0.002
Dissipation factor
1017 ohm-cm
1016 ohms
465 volts
1017 ohm-cm
1016 ohms
Volume resistivity
Surface resistivity
ASTM D257-61
465 volts
Corona start voltage 0.025mm (1-mil)
Insulation resistance
ASTM D1868-61T
Based on 0.05 mfd wound
capacitor using 0.25 mm
(1-mil) Film
100.000 megohm mfds.
100.000 megohm mfds.
PHYSICAL
0.05mm (0.002”)
0.05mm (0.002”)
Material thickness
1.72 x 108 Pa (25,000 psi)
3.10 x 105 Pa (45 psi)
103 MPa (1500 psi)
0.31 MPa (45 psi)
Ultimate tensile strength (MD)
Bursting strength test (Mullen)
Tear strength – initial
Density
ASTM D882-64T
ASTM 0774-63
35,433 gm/mm (900 gm/mil)
1.78 gm/cm3 (111.1 lb/ft3)
>10,000 cycles
ASTM D1004-61
ASTM D1505-63T
ASTM D2176-63T
27,559 gm/mm (700 gm/mil)
1.42 gm/cm3 (88.7 lb/ft3)
>10,000 cycles
Folding endurance (MIT)
THERMAL
NONE
NONE
Melting point
815ºC (1499ºF)
435ºC (815ºF)
815ºC (1499ºF)
435ºC (815ºF)
Zero strength temperature
Cut through temperature
Hot Bar (Du Pont test)
Weighted probe on heated film
(Du Pont test)
525ºC (977ºF)
525ºC (977ºF)
-260ºC to 240ºC
(-436ºF to 464ºF)
0.379 W/m ºC
-260ºC to 240ºC
(-436ºF to 464ºF)
0.156W/m ºC
Service temperature
Thermal conductivity
Model TC-1000 twin heatmeter
Comparative tester
UL 94
(0.219 BTU/hr-ft-ºF)
(0.09 BTU/hr-ft-ºF)
V-0, UL“E”card E39505
V-0, UL“E”card E39505
Flammability
Notes: One mil equals 0.001 inch
Dimensional tolerances are 0.38mm (0.015”), hole diameters are 0.25mm (0.010”) and angularity is 1 1/2° unless otherwise specified.
UUSSAATTeel:l:++11(6(60033))222244-9-9998888eemmaaili:l:ininfofo@@aaaavvidid.c.coomm
Singapore Tel: +65 6362 8388 email: sales@aavid.com.sg
Taiwan Tel: +886 (2) 2698-9888 email: sales@aavid.com.tw
AMERICA
EUROPE
ASIA
Italy Tel: +39 051 764011 email: sales.it@aavid.com
Italy Tel: +39 051 764011 email: sales.it@aavid.com
101
United Kingdom Tel: +44 1793 401400 email: sales.uk@aavid.com
United Kingdom Tel: +44 1793 401400 email: sales.uk@aavid.com
www.aavidthermalloy.com
AAVID [ AAVID THERMALLOY, LLC ]
