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All Categories > Thermal Interface Materials > Thin Interface Thermal Insulators > CHO-THERM® - High Power Thermally Conductive Electrical Insulator Pads > Item # T500  


CHO-THERM - High Power Thermally Conductive Electrical Insulator Pads

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Item # T500, CHO-THERM® - High Power Thermally Conductive Electrical Insulator Pads

CHO-THERM® HIGH-POWER THERMAL INSULATOR PADS are thermally conductive materials designed for use where the highest possible thermal, dielectric, and mechanical properties are required.

Fiberglass cloth reinforcement strengthens CHO-THERM® pads against tear, cut-through and punctures.

These materials are available in sheet form and die-cut configurations. An optional adhesive layer (with PSA) is available on one or two sides. With a proven track record spanning several decades in multiple applications, these products are the first choice for high-end power supplies, industrial, aerospace, and military/avionics applications.

Available in several different forms to suit various applications.

Features/Benefits
  • Excellent thermal properties
  • High dielectric strength
  • Excellent mechanical strength and puncture resistance
    •



     Specifications 

    Color
    		Green

    Reinforcement Carrier
    		Fiberglass

    Test Method Thicknesses
    		ASTM D374

    Thickness
    		0.25 mm
    0.010     in

    Thickness Tolerance
    		± 0.050 mm
    ± 0.002     in

    Test Method Specific Gravity
    		ASTM D792

    Specific Gravity
    		1.60

    Test Method Hardness
    		ASTM D2240

    Hardness, Shore A
    		80

    Operating Temperature Range
    		–40 to 200 ºC
    –40 to 392     ºF

    Test Method Thermal Impedance
    		ASTM D5470

    Thermal Impedance
    		1.2 ºC-cm²/W
    0.19     ºC-in²/W

    Test Method Apparen Thermal Conductivity
    		ASTM D5470

    Apparen Thermal Conductivity
    		2.1 W/m·K

    Test Method Heat Capacity
    		ASTM E1269

    Heat Capacity
    		1.0 J/g-ºC

    Test Method Coefficient of Thermal Expansion
    		ASTM E831

    Coefficient of Thermal Expansion
    		250 ppm/K

    Test Method Volume Resistivity Dry
    		ASTM D149

    Volume Resistivity Dry
    		1016 O/cm

    Test Method Voltage Breakdown Dry
    		ASTM D149

    Voltage Breakdown Dry
    		4000 Vac

    Test Method Tensile Strength
    		Chomerics

    Tensile Strength
    		20.7 MPa
    3000     psi

    Test Method Tear Strength
    		Chomerics

    Tear Strength
    		70 kN/m
    400     lb/in

    Test Method Elongation
    		Chomerics

    Elongation
    		20 %

    Test Method Dielectric Constant
    		ASTM D150

    Dielectric Constant at 1000 kHz
    		3.5

    Test Method Dissipation Factor
    		Chomerics Test

    Dissipation Factor at 1000 kHz
    		0.003

    Test Method Flammability Rating
    		UL 94

    Flammability Rating
    		V-0

    Test Method RoHS Compliant
    		Chomeric Certification

    RoHS Compliant
    		Yes

    Test Method Outgassing
    		ASTM E595

    Outgassing TML
    		0.40 %

    Outgassing CVCM
    		0.10 %

    Test Method Shelf Life
    		Chomerics

    Shelf Life, Months from Dry Pad
    		24

    Shelf Life, Months from Dry Pad with PSA
    		18