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Chemically Resistant adhesives

Epoxy Technology EPO-TEK® H70E Thermally Conductive, Electrically Insulating Epoxy
Categories: Polymer; Thermoset; Epoxy; Epoxy, Thermally Conductive

Material Notes: Product Description: EPO-TEK® H70E is a two component, thermally conductive, electrically insulating epoxy designed for chip bonding in microelectronic and optoelectronics applications.

Advantages & Application Notes:

  • Heat-sinking adhesive. It is particularly recommended for thermal management applications where good heat dissipation is necessary.
  • The excellent handling characteristics and the long pot life at room temperature for this unique, two component system is obtained without the use of solvents.
  • Easy to use. It can be screen printed, machine dispensed, stamped, or hand applied.
  • Die-attach adhesive designed to be used in the 300°C range to resist TC wire bonding operations. Meets JEDEC Level III and II packaging criteria.
  • Excellent adhesion to ferrous and non-ferrous metals, lead-frame die paddle, glass, ceramic, kovar, and PCB.
  • Can be cured very rapidly; excellent material to use for making fast circuit repairs; can be snap-cured for in-line semiconductor die-bonding.
  • Passes NASA low outgassing standard ASTM E595 with proper cure

Information Provided by Epoxy Technology

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Specific Gravity 1.50 g/cc1.50 g/ccPart A
 2.50 g/cc2.50 g/ccPart B
Particle Size <= 50 µm<= 50 µm
Viscosity 4000 - 7000 cP
@Temperature 23.0 °C
4000 - 7000 cP
@Temperature 73.4 °F
50 rpm
 
Chemical PropertiesMetricEnglishComments
Ionic Impurities - Cl (Chloride) 186 ppm186 ppm
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 8383
Tensile Modulus 5.4286 GPa787.35 ksiStorage
Shear Strength >= 13.8 MPa>= 2000 psiLap
 >= 23.4 MPa>= 3400 psiDie
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+13 ohm-cm>= 1.00e+13 ohm-cm
Dielectric Constant 4.22
@Frequency 1000 Hz
4.22
@Frequency 1000 Hz
Dissipation Factor 0.0040
@Frequency 1000 Hz
0.0040
@Frequency 1000 Hz
 
Thermal PropertiesMetricEnglishComments
CTE, linear 15.0 µm/m-°C8.33 µin/in-°FBelow Tg
 64.0 µm/m-°C35.6 µin/in-°FAbove Tg
Thermal Conductivity 0.900 W/m-K6.25 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 200 °C392 °FContinuous
 300 °C572 °FIntermittent
Minimum Service Temperature, Air -55.0 °C-67.0 °FIntermittent
 -55.0 °C-67.0 °FContinuous
Glass Transition Temp, Tg >= 80.0 °C>= 176 °FDynamic Cure 20—200°C /ISO 25 Min; Ramp -10—200°C @ 20°C/Min
Decomposition Temperature 451 °C844 °FDegradation Temperature
 
Processing PropertiesMetricEnglishComments
Cure Time  1.00 min
@Temperature 175 °C
0.0167 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
 90.0 min
@Temperature 80.0 °C
1.50 hour
@Temperature 176 °F
Minimum Bond Line
Pot Life 3360 min3360 min
Shelf Life 12.0 Month
@Temperature 25.0 °C
12.0 Month
@Temperature 77.0 °F
 
Descriptive Properties
ColorBeigePart B
 GrayPart A
ConsistencySlightly pourable paste
Mix Ratio by Weight1:1
Number of ComponentsTwo
Thixotropic Index1.17
Weight Loss0.24%200°C
 0.75%250°C
 1.6%300°C

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PPOXYT071 / 141110

Chemically Resistant adhesives

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