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SP-400 Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers |
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1 / 2 page 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. Note: To build a part number, visit our website at www.bergquistcompany.com. Sil-Pad® 400 TYPICAL APPLICATIONS INCLUDE • Power supplies • Automotive electronics • Power semiconductors • Motor controls CONFIGURATIONS AVAILABLE • Sheet form, die-cut parts and roll form; with or without pressure sensitive adhesive PDS_SP_400_0115 FEATURES AND BENEFITS • Thermal impedance: 1.13°C-in2/W (@50 psi) • Original Sil-Pad material • Excellent mechanical and physical characteristics • Flame retardant PRODUCT DESCRIPTION The Original Sil-Pad® Material January 2015 PROPERTY IMPERIAL VALUE METRIC VALUE TEST METHOD Color Gray Gray Visual Reinforcement Carrier Fiberglass Fiberglass — Thickness (inch) / (mm) 0.007, 0.009 0.178, 0.229 ASTM D374 Hardness (Shore A) 85 85 ASTM D2240 Breaking Strength (lbs/inch) / (kN/m) 30 5 ASTM D1458 Elongation (% at 45º to Warp and Fill) 54 54 ASTM D412 Tensile Strength (psi) / (MPa) 3000 20 ASTM D412 Continuous Use Temp (°F) / (°C) -76 to 356 -60 to 180 — ELECTRICAL Dielectric Breakdown Voltage (Vac) 3500, 4500 3500, 4500 ASTM D149 Dielectric Constant (1000 Hz) 5.5 5.5 ASTM D150 Volume Resistivity (Ohm-meter) 1011 1011 ASTM D257 Flame Rating V-O V-O U.L. 94 THERMAL Thermal Conductivity (W/m-K)0.9 0.9ASTM D5470 THERMAL PERFORMANCE vs PRESSURE 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 (°C-in2/W) 0.007" (1) 1.82 1.42 1.13 0.82 0.54 Thermal Impedance (°C-in2/W) 0.009" (1) 2.34 1.83 1.45 1.05 0.69 1) The ASTM D5470 test fixture was used. 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. TYPICAL PROPERTIES OF SIL-PAD 400 |
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