Epoxy Technology EPO-TEK® 920 Thermally Conductive Epoxy

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Epoxy Technology EPO-TEK® 920 Thermally Conductive Epoxy
Categories:	Polymer; Thermoset; Epoxy; Epoxy, Thermally Conductive
Material Notes:	Material Description: A two component, high Tg, electrically insulating, thermally conductive epoxy designed for thermal management applications found in semiconductor, hybrid microelectronics, PCB, and optical industries. It can be an adhesive for mounting heat sinks and substrates, a seal for many types of packages, or a thermal potting compound. It is a NASA approved, low outgassing epoxy. Information Provided by Epoxy Technology
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Physical Properties	Metric	English	Comments

Specific Gravity	1.02 g/cc	1.02 g/cc	Part B
	2.24 g/cc	2.24 g/cc	Part A
Particle Size	<= 50 µm	<= 50 µm
Viscosity	13000 - 20000 cP @Temperature 23.0 °C	13000 - 20000 cP @Temperature 73.4 °F	20 rpm

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	90	90
Tensile Modulus	5.25 GPa	762 ksi	Storage
Shear Strength	>= 13.8 MPa	>= 2000 psi	Lap
	>= 35.2 MPa	>= 5100 psi	Die

Electrical Properties	Metric	English	Comments
Volume Resistivity	>= 1.00e+14 ohm-cm	>= 1.00e+14 ohm-cm
Dielectric Constant	5.19 @Frequency 1000 Hz	5.19 @Frequency 1000 Hz
Dissipation Factor	0.0080 @Frequency 1000 Hz	0.0080 @Frequency 1000 Hz

Thermal Properties	Metric	English	Comments
CTE, linear	24.0 µm/m-°C	13.3 µin/in-°F	Below Tg
	117 µm/m-°C	65.0 µin/in-°F	Above Tg
Thermal Conductivity	0.970 W/m-K	6.73 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	200 °C	392 °F	Continuous
	300 °C	572 °F	Intermittent
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F	Continuous
	-55.0 °C	-67.0 °F	Intermittent
Glass Transition Temp, Tg	>= 90.0 °C	>= 194 °F	Dynamic Cure 20—200°C /ISO 25 Min; Ramp -10—200°C @ 20°C/Min
Decomposition Temperature	343 °C	649 °F	Degradation Temperature

Processing Properties	Metric	English	Comments
Cure Time	5.00 min @Temperature 150 °C	0.0833 hour @Temperature 302 °F	minimum
	10.0 min @Temperature 120 °C	0.167 hour @Temperature 248 °F	minimum
	20.0 min @Temperature 100 °C	0.333 hour @Temperature 212 °F	minimum
Pot Life	300 min	300 min
Shelf Life	6.00 Month @Temperature 25.0 °C	6.00 Month @Temperature 77.0 °F

Descriptive Properties
Color	Amber		Part B
	Grey		Part A
Consistency	Smooth Paste
Mix Ratio by Weight	100:3
Number of Components	Two
Thixotropic Index	2.1
Weight Loss	<0.05%		200°C
	0.24%		250°C
	0.77%		300°C

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PPOXYT053 / 141092

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