SIL-PAD

Poly-Pad K-4​

Features & Benefits

  • Thermal impedance: 0.95°C-in2/W (@50 psi)
  • Polyester based
  • For applications requiring non-silicone conformal coatings
  • Designed for silicone-sensitive applications
  • Excellent dielectric and physical strength
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Properties

Typical properties of Poly-Pad K-4
Properties Imperial Value Metric Value Test Method
Color
Tan
Tan
Visual
Reinforcement Carrier
Polyimide
Polyimide
***
Thickness (inch) / (mm)
0.006
0.152
ASTM D374
Hardness (Shore A)
90
90
ASTM D2240
Breaking Strength (lbs/inch) / (kN/m)
30
5
ASTM D1458
Elongation (%)
40
40
ASTM D412
Tensile Strength (psi) / (MPa)
5000
34
ASTM D412
Continuous Use Temp (°F) / (°C)
-4 to 302
-20 to 150
***
Electrical
Dielectric Breakdown Voltage (Vac)
6000
6000
ASTM D149
Dielectric Constant (1000 Hz)
5.0
5.0
ASTM D150
Volume Resistivity (Ohm-meter)
1012
1012
ASTM D257
Flame Rating
V-O
V-O
U.L. 94
Thermal
Thermal Conductivity (W/m-K)
0.9
0.9
ASTM D5470
Pressure (psi)
10
25
50
100
200
TO-220 Thermal Performance (ºC/W)
5.64
5.04
4.34
3.69
3.12
Thermal Impedance (ºC-in2/W) (1)
1.55
1.21
0.95
0.70
0.46