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Chemically Resistant adhesives

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Epoxy Technology EPO-TEK® E2116 Electrically Conductive, Silver Epoxy
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy, Electrically Conductive

Material Notes: Product Description: EPO-TEK® E2116 is a two component, silver-filled and stencil printable electrically conductive adhesive for bonding SMDs onto PCB and substrates. Can be used as a “lead-free” alternative in circuit assembly applications found in semiconductor, medical, consumer and hybrid/military industries.

Advantages & Application Notes:

  • The thixotropic and paste-like rheology allows for application by screen or stencil printing techniques. It was designed to be printed for SMT joining similar to printing solder paste. It may also be hand applied or dispensed.
  • A “lead-free” solution for PCB level circuit assemblies. It is suggested to use this epoxy with SMDs that do not contain Pb plated leads. Preferable to solder:
    • Lead-free can be an environmental advantage
    • Silver epoxy curing at 150°C is a lower temperature solution than 180-220°C SMT solder reflow.
    • Electrically conductive adhesives can be used on flip chips and ultra-fine pitch count SMDs, avoiding the problems of solder bridging.
  • NASA approved low outgassing epoxy
  • Can be used on mixed technology hybrid substrates or PCBs. Adhesive deposit, pick-and-place, and cure can be accomplished in single step fashion.
  • Suggested surface finishes, contact pads, or leads: Ag, Ag-Pd, Au, and Cu. Compatible with PCBs including FR4, BT, ceramic, and flex circuits.

    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 PropertiesOriginal ValueComments
Specific Gravity 1.04 g/ccPart B
 2.95 g/ccPart A
Particle Size <= 20 µm
Viscosity 65000 - 90000 cP
@Temperature 23.0 °C
1 rpm
 
Chemical PropertiesOriginal ValueComments
Ionic Impurities - Cl (Chloride) 153 ppm
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 80
Tensile Modulus 556000 psiStorage
Shear Strength 1650 psiLap
 >= 3400 psiDie
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity <= 0.00050 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 43.0 µm/m-°CBelow Tg
 142 µm/m-°CAbove Tg
Thermal Conductivity 1.19 W/m-K
Maximum Service Temperature, Air 200 °CContinuous
 300 °CIntermittent
Minimum Service Temperature, Air -55.0 °CContinuous
 -55.0 °CIntermittent
Glass Transition Temp, Tg >= 100 °CDynamic Cure 20—200°C /ISO 25 Min; Ramp -10—200°C @ 20°C/Min
Decomposition Temperature 405 °CDegradation Temperature; TGA
 
Processing PropertiesOriginal ValueComments
Cure Time 15.0 min
@Temperature 150 °C
Minimum Bond Line
Pot Life 360 min
Shelf Life 6.00 Month
@Temperature 25.0 °C
 
Descriptive Properties
ColorAmberPart B
 SilverPart A
ConsistencyViscous Paste
Ionic Impurities NH4107 ppm
Mix Ratio by Weight100:3
Number of ComponentsTwo
Weight Loss0.66%300°C

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PPOXYT009 / 141047

Chemically Resistant adhesives

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