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AI Technology ME 7158

ME7158 is a reworkable, aluminum nitride filled, electrically insulating and thermally conductive epoxy paste adhesive. It exhibits outstanding flexibility for bonding materials having highly mismatched CTE's (i.e., alumina to aluminum, silicon to copper). The very high thermal conductivity of this material makes it useful for bonding high-powered, large area die and components. It can be readily reworked at 80-150°C with torque or peel stress.

Product Type: Epoxy Adhesive

Application Area: Die/Chip Attach

Cure Method: Heat Cure

Compatible Substrates & Surfaces: Aluminum, Copper, Metal

Application Method: Injection

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Product Type

Features & Benefits

Product Features
  • Stress-free, very high.
  • Thermally conductive.
  • Reworkable.
  • Epoxy paste adhesive.
  • High power die attach.
  • Substrate and component attach.
  • Reworkability.Mismatched CTE's.

Applications & Uses

Application Area
Application Method
Compatible Substrates & Surfaces
Cure Method
Application Procedures
  • Thaw for 30 minutes before using syringe or opening jar.
  • Dispense adhesive onto clean substrate.
  •  Pre-bake dispensed adhesive open-face at 60°C for 30 to 60 minutes or 80°C for 30 minutes to achieve optimum bonding.**
  • Cure according to one of the recommended cure schedules.
Note

**For higher temperature curing, above 125°C andlor bonding area of over 1cm x 1cm, it is recommended that the dispensed adhesive be pre-baked, open- face without parts, at 60°C for 60 minutes or 80°C for 30 minutes, before parts are mounted and cured.

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
Hardness80 - 100Shore A
Hardness33 - 63Shore D
Cured Density2.07 - 2.53g/cc
Thermal Conductivitymin. 3.6W/m-°C
Thermal Conductivity3.24 - 3.96W/m-°C
Coefficeint of Linear Thermal Expansion102 - 138ppm/°C
Maximum Continuous Operation Temperaturemax. 150°C
Average Viscosity (at 25°C, 0.5rpm, Spindle CP51)200000 - 300000cPsBrookfield Viscometer DV-1
Pot Life (at 25°C)72hours
Electrical Resistivitymin. 1x10¹⁴Ω-cm
Die Shear Strengthmin. 1800psi
Viscosity (at 0.5 rpm)250000cPs

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

Packaging & Availability

Product Availability

MET158 Is available in syringes for automatic needle dispense applications or in jars.

Storage & Handling

Shelf Life
1 Year (at -40°C)
Storage Information
  • Storage temperature: -40°C in sealed package.
  • Pot life 72 hrs at  25°C