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Chemically Resistant adhesives

Epoxy Technology EPO-TEK® H31LV Electrically Conductive, Silver Epoxy
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy, Electrically Conductive

Material Notes: Product Description: EPO-TEK® H31LV is a single component, silver-filled, electrically conductive epoxy designed for semiconductor die attach applications found in hybrids, JEDEC, and opto-electronic packaging. Low viscosity version of EPO-TEK® H31.

Advantages & Application Notes:

  • Bright /shiny silver provides high reflectance, especially good for enhancing LED overall brightness.
  • Rheology described as pourable paste:
    • Allows for high volume dispensing, wafer-level stamping, and pin transfer methods of application.
    • It is capable of spray coating or paint brush coating.
  • Suggested applications:
    • Semiconductor: die attach chips onto lead-frames for JEDEC Level III and II packaging. Adhesion to Ag-spot leadframe.
    • Hybrids: GaAs and Si die attach, adhesion to Au-plated chips, general electrical contacts for ceramic circuits, substrate attach to ground package.
    • Opto-electronic: single LED packaging in TO-cans, LED arrays on PCB or substrate, adhesion to ITO in LCDs, and sensor device/OEM instrumentation.
    • PCB/General: EMI or Rf shielding of electronics
  • Available in several different viscosity versions.

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 1.57 g/cc1.57 g/cc
Particle Size <= 45 µm<= 45 µm
Viscosity 2000 - 3500 cP
@Temperature 23.0 °C
2000 - 3500 cP
@Temperature 73.4 °F
100 rpm
 
Chemical PropertiesMetricEnglishComments
Ionic Impurities - Na (Sodium) 380 ppm380 ppm
Ionic Impurities - K (Potassium) 47 ppm47 ppm
Ionic Impurities - Cl (Chloride) 14 ppm14 ppm
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 8585
Tensile Modulus 1.77 GPa257 ksiStorage
Shear Strength 9.65 MPa1400 psiLap
 >= 11.7 MPa>= 1700 psiDie
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity <= 0.0080 ohm-cm<= 0.0080 ohm-cm
 
Thermal PropertiesMetricEnglishComments
CTE, linear 26.0 µm/m-°C14.4 µin/in-°FBelow Tg
 148 µm/m-°C82.2 µin/in-°FAbove Tg
Thermal Conductivity 0.550 W/m-K3.82 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 200 °C392 °FContinuous
 300 °C572 °FIntermittent
Minimum Service Temperature, Air -55.0 °C-67.0 °FContinuous
 -55.0 °C-67.0 °FIntermittent
Glass Transition Temp, Tg >= 110 °C>= 230 °FDynamic Cure 20—200°C /ISO 25 Min; Ramp -10—250°C @ 20°C/Min
Decomposition Temperature 387 °C729 °FDegradation Temperature
 
Processing PropertiesMetricEnglishComments
Cure Time 60.0 min
@Temperature 150 °C
1.00 hour
@Temperature 302 °F
Minimum Bond Line
Pot Life 4320 min4320 min
Shelf Life 6.00 Month6.00 Monthrefrigerated
 
Descriptive Properties
ColorSilver
ConsistencySmooth, pourable paste
Ionic Impurities NH48 ppm
Number of ComponentsSingle
Thixotropic Index1.8
Weight Loss0.13%200°C
 0.27%250°C
 1.05%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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PPOXYT044 / 141083

Chemically Resistant adhesives

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