Lord Adhesives Thermoset™ ME-542 Underfill Encapsulant

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Lord Adhesives Thermoset™ ME-542 Underfill Encapsulant
Categories:	Polymer; Thermoset; Epoxy; Epoxy Encapsulant, Unreinforced
Material Notes:	LORD Thermoset™ ME-542 encapsulant is an anhydridefree, thermally conductive, semiconductor grade epoxy underfill product developed for the encapsulation of densely populated area array flip chip devices. It is formulated with the necessary structural strength to handle over-molding processes. Thermoset ME-542 encapsulant is engineered to withstand 260°C peak reflow temperatures of lead-free solders. All information provided by Lord.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.90 g/cc	1.90 g/cc
Water Absorption	<= 0.80 %	<= 0.80 %
Viscosity	20000 cP @Temperature 25.0 °C	20000 cP @Temperature 77.0 °F	TA Rheometer

Mechanical Properties	Metric	English	Comments
Modulus of Elasticity	5.00 GPa	725 ksi	Storage
Shear Strength	62.0 MPa	8990 psi	Die

Electrical Properties	Metric	English	Comments
Volume Resistivity	>= 1.00e+15 ohm-cm @Temperature 25.0 °C	>= 1.00e+15 ohm-cm @Temperature 77.0 °F

Thermal Properties	Metric	English	Comments
CTE, linear	30.0 µm/m-°C	16.7 µin/in-°F	Alpha 1
	120 µm/m-°C	66.7 µin/in-°F	Alpha 2
Thermal Conductivity	0.800 W/m-K	5.55 BTU-in/hr-ft²-°F
Glass Transition Temp, Tg	135 °C	275 °F	TMA

Processing Properties	Metric	English	Comments
Cure Time	60.0 min @Temperature 165 °C	1.00 hour @Temperature 329 °F
	90.0 min @Temperature 150 °C	1.50 hour @Temperature 302 °F
Pot Life	2160 min @Temperature 25.0 °C	2160 min @Temperature 77.0 °F
Gel Time	3.00 min @Temperature 150 °C	3.00 min @Temperature 302 °F
Shelf Life	6.00 Month @Temperature -40.0 °C	6.00 Month @Temperature -40.0 °F

Component Elements Properties	Metric	English	Comments
Potassium, K	0.00040 %	0.00040 %
Sodium, Na	0.00050 %	0.00050 %

Descriptive Properties
Appearance	Black
Chloride (%)	0.01
Consistency	Liquid

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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