company tower banner
AI Technology Company Logo

AI Technology EG 7658

EG7658 is a reworkable, aluminum nitride filled, electrically insulating and thermally conductive epoxy paste adhesive. It which exhibits outstanding flexibility for bonding materials with highly mismatched CTE's (ie., alumina to aluminum, silicon to copper). The high thermal conductivity and flexibility make it excellent for bonding high-powered, large area die and components. EG7658 can be reworked using temperatures higher than the cure temperature from 80-150°C to soften the bond line. Use a tool adequate to break the bond and remove. Clean any residue with a solvent which will not damage the parts.

Product Type: 2K (2 component) Adhesive, Epoxy Adhesive

Application Area: Die/Chip Attach, Heat Sink

Cure Method: Heat Cure

Compatible Substrates & Surfaces: Aluminum, Copper, Metal

Application Method: Injection

Chemical Family: Epoxy & Epoxy Derivatives

Technical Data Sheet
  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

Features & Benefits

Product Features

Flexible epoxy adhesive.
High thermal conductivity.
2 component, premixed frozen.
Stress free bonding and reworkable.
High power die and component attach.
Substrate attach.
Heatsink attach.
Large area bonding.
Bonding Adherends with Mismatched CTE's.

Applications & Uses

Application Method
Compatible Substrates & Surfaces
Cure Method
Application Procedures
  • Store Part A and Part B at ambient. Part A has higher vicosity.
  • Mix A and B 1:1 by weight.
  • Cure according to one of the recommended cure schedules.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Electrical Resistivity (at 150°C, 60minutes)min. 1x10¹⁴Ω-cm
Dielectric Strengthmin. 750Volts/mil
Glass Transition Temperature- 27.5 to -22.5°C
Glass Transition Temperature-25°C
Lap Shear Strengthmin. 6.9N/mm²
Device Push Off Strengthmin. 12.4N/mm²
Cured Density2.07 - 2.53g/cc
Thermal Conductivity3.24 - 3.96W/m-°C
Thermal Conductivitymin. 3.67W/m-°C
Coefficeint of Linear Thermal Expansion120ppm/°C
Maximum Continuous Operation Temperaturemax. 150°C
Average Viscosity (at 25°C, 0.5rpm, Spindle CP51)232000 - 348000cPsBrookfield Viscometer DV-1
Electrical Resistivitymin. 1x10¹⁴Ω-cm
Die Shear Strengthmin. 1800psi
Viscosity (at 0.5 rpm)337000cPs

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Cure Schedules
Temperature Time
80°C 8 hrs
100°C 4 hrs
125°C 2 hrs
150°C 1 hr

For tack and cure: Tack the die with DAF with heated collet and heated stage holding the header, leadframe, module or substrate at 100-150°C. Post curing at the same temperature
The die or component can also be tacked on the substrate at 100°C or higher with 5 psi. When a filet around the edge of the die or component is observed, the pressure can be released for the rest of the bonding cycle.

Packaging & Availability

Product Availability

EG7658 is available in syringes for automatic needle dispense applications or in jars. Upon request, the material can be shipped premixed and frozen.

Storage & Handling

Shelf Life
1 Year
Storage Information

Storage temperature: 25°C.