Sil Pad

Sil-Pad 400

Features & Benefits

  • Thermal impedance: 1.13°C-in2/W (@50 psi)
  • Original Sil-Pad material
  • Excellent mechanical and physical characteristics
  • Flame retardant

Description

Sil-Pad 400 is a composite of silicone rubber and fiberglass. The material is flame retardant and is specially formulated for use as a thermally conductive insulator. The primary use for Sil-Pad 400 is to electrically isolate power sources from heat sinks. Sil-Pad 400 has excellent mechanical and physical characteristics. Surfaces are pliable and allow complete surface contact with excellent heat dissipation. Sil-Pad 400 actually improves its thermal resistance with age. The reinforcing fiberglass provides excellent cut-through resistance. In addition, Sil-Pad 400 is non-toxic and resists damage from cleaning agents.

Typical Applications include

  • Power supplies
  • Power semiconductors
  • Automotive electronics
  • Motor controls

Properties

Typical properties of Sil-Pad 400
Properties Imperial Value Metric Value Test Method
Reinforcement Carrier Fiberglass Fiberglass ***
Color Gray Gray Visual
Hardness (Bulk Rubber) (Shore 00) 85 85 ASTM D2240
Typical Use Temp (°F) / (°C) -76 to 356 -60 to 180 ***
Thickness (inch) / (mm) 0.007, 0.009 0.178, 0.229 ASTM D374
Breaking Strength (lbs/inch) / (kN/m) 30 5 ASTM D1458
Elongation (%45° to Warp and Fill) 54 54 ASTM D412
Tensile Strength (psi) / (MPa) 3000 20 ASTM D412
Typical properties of Sil-Pad 400
Electrical Imperial Value Metric Value Test Method
Dielectric Breakdown Voltage (Vac) 3500, 4500 3500, 4500 ASTM D149
Dielectric Constant (1000 Hz) 5.5 5.5 ASTM D150
Volume Resistivity (Ohm-meter) 10^11 10^11 ASTM D257
Flame Rating V-O V-O U.L. 94
Typical properties of Sil-Pad 400
Thermal Imperial Value Metric Value Test Method
Thermal Conductivity (W/m-K) 0.9 0.9 ASTM D5470
Typical properties of Sil-Pad 400
Pressure (psi) 10 25 50 100 200
TO-220 Thermal Performance (°C/W) 0.007" 6.62 5.93 5.14 4.38 3.61
TO-220 Thermal Performance (°C/W) 0.009" 8.51 7.62 6.61 5.63 4.64
Thermal Impedance (ºC-in2/W) 0.007" 1.82 1.42 1.13 0.82 0.54
Thermal Impedance (ºC-in2/W) 0.009" 2.34 1.83 1.45 1.05 0.69

Configurations

Configurations available

  • Sheet form, die-cut parts and roll form; with or without pressure sensitive adhesive

Downloads

Data Sheet

Sil Pad

Data Sheet

Sil-Pad 400

Standard Configuration (Metric)

Sil Pad

Standard Configuration (Metric)

Sil-Pad 400

Standard Configuration (Imperial)

Sil Pad

Standard Configuration (Imperial)

Sil-Pad 400

RoHS Certificate

Sil Pad

RoHS Certificate

Sil-Pad 400

Halogen Testing Report

Sil Pad

Halogen Testing Report

Sil-Pad 400

Safety Data Sheet (SDS)

Sil Pad

Safety Data Sheet (SDS)

Sil-Pad 400

Safety Data Sheet (SDS)

Sil-Pad
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