Epoxy Technology EPO-TEK® H20-LC Electrically Conductive, Silver Epoxy

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Epoxy Technology EPO-TEK® H20-LC Electrically Conductive, Silver Epoxy
Categories:	Polymer; Adhesive; Thermoset; Epoxy; Epoxy, Electrically Conductive
Material Notes:	Product Description: EPO TEK® H20E-LC is a two component, silver-filled epoxy system designed specifically for chip bonding in microelectronic and optoelectronic applications. It is also used extensively for thermal management applications due to its high thermal conductivity. It has proven itself to be extremely reliable over many years of service and is the conductive adhesive of choice for non-military low chloride applications. Advantages & Application Notes: Especially recommended for use in high speed epoxy chip bonding systems where very fast cures are desired. Suggested for JEDEC Level III and II for plastic IC packaging. Capable of resisting TC wire bonding temperatures in the range of 300°C to 400°C. Ease of use; apply by dispensing, screen printing, die-stamping, or by hand. Especially suited for high power devices and high current flow. High power LEDs. Opto-electronic packaging material: LED, LCDs, and fiber optic components. Information Provided by Epoxy Technology
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Physical Properties	Metric	English	Comments

Specific Gravity	2.42 g/cc	2.42 g/cc	Part A
	3.07 g/cc	3.07 g/cc	Part B
Particle Size	<= 45 µm	<= 45 µm
Viscosity	2200 - 3200 cP @Temperature 23.0 °C	2200 - 3200 cP @Temperature 73.4 °F	100 rpm

Chemical Properties	Metric	English	Comments
Ionic Impurities - Na (Sodium)	6.0 ppm	6.0 ppm
Ionic Impurities - K (Potassium)	2.0 ppm	2.0 ppm
Ionic Impurities - Cl (Chloride)	11 ppm	11 ppm

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	60	60
Tensile Modulus	5.39 GPa	781 ksi	Storage
Shear Strength	11.53 MPa	1672 psi	Lap
	>= 11.7 MPa	>= 1700 psi	Die

Electrical Properties	Metric	English	Comments
Volume Resistivity	<= 0.00040 ohm-cm	<= 0.00040 ohm-cm

Thermal Properties	Metric	English	Comments
CTE, linear	19.0 µm/m-°C	10.6 µin/in-°F	Below Tg
	78.0 µm/m-°C	43.3 µin/in-°F	Above Tg
Thermal Conductivity	1.69 W/m-K	11.7 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	>= 80.0 °C	>= 176 °F	Dynamic Cure 20—200°C /ISO 25 Min; Ramp -10—200°C @ 20°C/Min
Decomposition Temperature	451 °C	844 °F	Degradation Temperature

Processing Properties	Metric	English	Comments
Cure Time	0.750 min @Temperature 175 °C	0.0125 hour @Temperature 347 °F	Minimum Bond Line
	5.00 min @Temperature 150 °C	0.0833 hour @Temperature 302 °F	Minimum Bond Line
	15.0 min @Temperature 120 °C	0.250 hour @Temperature 248 °F	Minimum Bond Line
Pot Life	5760 min	5760 min
Shelf Life	12.0 Month @Temperature 25.0 °C	12.0 Month @Temperature 77.0 °F

Descriptive Properties
Color	Silver		Part A
	Silver		Part B
Consistency	Smooth thixotropic paste
Ionic Impurities NH₄	259 ppm
Mix Ratio by Weight	1:1
Number of Components	Two
Thixotropic Index	4.6
Weight Loss	0.42%		200°C
	1.03%		250°C
	1.96%		300°C

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PPOXYT032 / 141071

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