Item # 1678, CHO-THERM® - High Power Thermally Conductive Electrical Insulator Pads On Robert McKeown Co., Inc.

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	Item # 1678, CHO-THERM® - High Power Thermally Conductive Electrical Insulator Pads

CHO-THERM - High Power Thermally Conductive Electrical Insulator Pads

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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		Pink

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		1.55

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		1.26 ºC-cm²/W 0.20 ºC-in²/W

Test Method Apparen Thermal Conductivity		ASTM D5470

Apparen Thermal Conductivity		2.0 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		2500 Vac

Test Method Tensile Strength		Chomerics

Tensile Strength		20.7 MPa 3000 psi

Test Method Tear Strength		Chomerics

Tear Strength		35 kN/m 200 lb/in

Test Method Elongation		Chomerics

Elongation		20 %

Test Method Dielectric Constant		ASTM D150

Dielectric Constant at 1000 kHz		3.6

Test Method Dissipation Factor		Chomerics Test

Dissipation Factor at 1000 kHz		0.007

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		0.55 %

Outgassing CVCM		0.12 %

Test Method Shelf Life		Chomerics

Shelf Life, Months from Dry Pad		24

Shelf Life, Months from Dry Pad with PSA		18

Item # 1678, CHO-THERM® - High Power Thermally Conductive Electrical Insulator Pads

Color

Reinforcement Carrier

Test Method Thicknesses

Thickness

Thickness Tolerance

Test Method Specific Gravity

Specific Gravity

Test Method Hardness

Hardness, Shore A

Operating Temperature Range

Test Method Thermal Impedance

Thermal Impedance

Test Method Apparen Thermal Conductivity

Apparen Thermal Conductivity

Test Method Heat Capacity

Heat Capacity

Test Method Coefficient of Thermal Expansion

Coefficient of Thermal Expansion

Test Method Volume Resistivity Dry

Volume Resistivity Dry

Test Method Voltage Breakdown Dry

Voltage Breakdown Dry

Test Method Tensile Strength

Tensile Strength

Test Method Tear Strength

Tear Strength

Test Method Elongation

Elongation

Test Method Dielectric Constant

Dielectric Constant at 1000 kHz

Test Method Dissipation Factor

Dissipation Factor at 1000 kHz

Test Method Flammability Rating

Flammability Rating

Test Method RoHS Compliant

RoHS Compliant

Test Method Outgassing

Outgassing TML

Outgassing CVCM

Test Method Shelf Life

Shelf Life, Months from Dry Pad

Shelf Life, Months from Dry Pad with PSA