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Master Bond adhesives

Lord Adhesives CircuitSAF™ MA-420 Epoxy Surface Mount Adhesive
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive
Material Notes: CircuitSAF™ MA-420 is an epoxy surface mount adhesive that cures rapidly at elevated temperatures and has been designed for use in high speed printed circuit board assembly for the attachment of surface mount components. This product is unique in that it can be used for both high speed dispensing and rapid printing without sacrificing any performance in either application. The high shear thinning and excellent viscosity recovery makes the material an excellent choice for high speed SMT applications. CircuitSAF™ MA-420 has been successfully used in high speed placement systems with integrated dispense heads. A list of equipment and the corresponding packaging can be found in the CircuitSAF™ MA-420 Brochure. CircuitSAF™ MA-420 also shows superior performance in non-contact dispense systems such as the Asymtek Dispense JetTM. The superior dot profile and high dot aspect ratio make it ideal for rapid printing. CircuitSAF™ MA-420 is fully compatible with the DEK ProFlow DirEKt ImagingTM system and is available in DEK ProFlowTM Cassettes.

All information provided by Lord.
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Physical PropertiesMetricEnglishComments
Density 1.36 g/cc0.0491 lb/in³
Particle Size <= 50 µm<= 50 µmmean particle size, 5 microns
Brookfield Viscosity 100000 cP100000 cP2HB CP52 Spindle @ 4.6rpm
 2.10e+6 cP2.10e+6 cP2HB CP52 Spindle @ 0.1rpm
 
Mechanical PropertiesMetricEnglishComments
Modulus of Elasticity 2.29 GPa332 ksiDMTA @ 1kHz
Shear Strength >= 13.8 MPa>= 2000 psiIPC817, 5 min 125ºC cure
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 9.00e+15 ohm-cm9.00e+15 ohm-cm
Insulation Resistance >= 1.00e+9 ohm>= 1.00e+9 ohmAfter 4 days
 >= 1.00e+9 ohm>= 1.00e+9 ohmAfter 7 days
Dielectric Constant  3.73
@Frequency 1e+9 Hz		3.73
@Frequency 1e+9 Hz		ASTM D150-95
 3.74
@Frequency 1000 Hz		3.74
@Frequency 1000 Hz		ASTM D2520-95
 3.8
@Frequency 10000 Hz		3.8
@Frequency 10000 Hz		ASTM D2520-95
 3.9
@Frequency 1e+10 Hz		3.9
@Frequency 1e+10 Hz		ASTM D2520-95
 4.56
@Frequency 1e+6 Hz		4.56
@Frequency 1e+6 Hz		ASTM D150-95
Dielectric Strength 54.29 kV/mm1379 kV/inASTM D149-97a
Dissipation Factor  0.0083
@Frequency 1000 Hz		0.0083
@Frequency 1000 Hz		ASTM D2520-95
 0.0137
@Frequency 10000 Hz		0.0137
@Frequency 10000 Hz		ASTM D2520-95
 0.0168
@Frequency 1e+9 Hz		0.0168
@Frequency 1e+9 Hz		ASTM D150-95
 0.031
@Frequency 1e+6 Hz		0.031
@Frequency 1e+6 Hz		ASTM D150-95
 0.0415
@Frequency 1e+10 Hz		0.0415
@Frequency 1e+10 Hz		ASTM D2520-95
 
Thermal PropertiesMetricEnglishComments
CTE, linear 45.0 µm/m-°C25.0 µin/in-°FAlpha 1
 140 µm/m-°C77.8 µin/in-°FAlpha 2
Thermal Conductivity 0.280 W/m-K1.94 BTU-in/hr-ft²-°F
Glass Transition Temp, Tg 70.0 °C158 °F
Flash Point >= 93.0 °C>= 199 °F
 
Processing PropertiesMetricEnglishComments
Cure Time  1.00 - 1.50 min
@Temperature 150 °C		0.0167 - 0.0250 hour
@Temperature 302 °F
 3.00 min
@Temperature 120 °C		0.0500 hour
@Temperature 248 °F
Shelf Life 9.00 Month
@Temperature 0.000 - 25.0 °C		9.00 Month
@Temperature 32.0 - 77.0 °F
 
Descriptive Properties
AppearanceRed or Yellow
ElectromigrationPassedBellcore GR-78
Thixotropic Index12.1ASTM D2196 (1 and 10rpm)
Torque Strength (N-mm)68on 1206 devices

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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PLORD088 / 86096




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