Datasheet

www.kerafol.com
U 80 & U 90
KERATHERM
®
silicone free U-Films
Standard Films silicone free
Applications
0%
medical applications
laser equipment
lighting systems
CD-rom drives
aero units
space units
U80 Rti [Kin
2
/W] U90 Rti [Kin
2
/W]
U80 Rti [K/W] U90 Rth [K/W]
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0 10 20 30 40 50 60
70
Rth/R
pressure [N/cm²]
Compression U80 and U90
U90 Rth[K/W]
U90 R[Kin²/W]
U80 Rth[K/W]
U80 R[Kin²/W]
In case of concerns about using silicones,
we offer you a ceramic-fi lled polyurethane
fi lm as an alternative material. Besides
good thermal and outstanding electrical
properties, these fi lms are characterized by
very good perforation strength.
These good physical properties are matched
with an excellent price-performance-ratio.
Properties Unit U 80 U 90
Colour blue light blue
Thermal Properties
Thermal resistance R
th
K/W 0.2 0.082
Thermal impedance R
ti
°Cmm²/W 73 33
Kin²/W 0.11 0.05
Thermal conductivity λ W/mK 1.8 6.0
Electrical Properties
Breakdown voltage U
d; ac
kV 4.0 4.0
Dielectric breakdown E
d; ac
kV/mm 25.0 25.0
Volume resistivity Ωm 1.4 x 10
14
2.0 x 10
11
Dielectric loss factor tan δ 1.3 x 10
-2
1.4 x 10
-2
Dielectric constant ε
r
3.2 3.1
Mechanical Properties
Measured thickness (+/-10%) mm 0.150 0.200
Hardness Shore A 80 - 90 70 - 85
Tensile strength N/mm² 3.0 2.0
Elongation % 130 150
Physical Properties
Application temperature °C -40 to +125 -40 to +125
Density g/cm³ 2.26 1.46
Flame rating UL-94 V-0 V-0
Possible thickness details see page 57
Optional available with
adhesive coating as U 80K / U 90K
Data for engineer guidance only.
Observed performance varies in application.
Engineers are reminded to test the material
in application.
Compression U 80 & U 90