Applications

LOCTITE ABLESTIK ACP 3122 – Anisotropic epoxy adhesive for microelectronics assembly and conductive die attachment

Item Name: LOCTITE ABLESTIK ACP 3122
Manufacturer: Henkel
Technologies: Epoxy
Color: Golden Brown
Cure Type: Heat cure
Package Size: Contact to Techniq VN for details.
Shelf Life: 6 months

1. Product Overview

LOCTITE ABLESTIK ACP 3122 is an anisotropic epoxy adhesive formulated for high-throughput microelectronics assembly. It is snap curable, conducts electrically only along the z-axis, and requires pressure during cure to form reliable interconnections. The adhesive is suitable for small die and component attachment without risk of electrical shorting. It features low-temperature curing, optimized rheology, and is designed for precision assembly of copper circuitry, gold-plated terminators, and silver ink traces.

Technology: Epoxy
Appearance: Golden brown
Cure: Heat cure
Key Benefits: Snap curable, anisotropic conductivity, low temperature cure, optimized rheology, z-axis conductivity only


2. Applications

  • Assembly of microelectronic components

  • Attachment of small dies and components

  • Copper circuitry, gold-plated terminators, silver ink conductive traces

  • Applications requiring high-throughput, precise, anisotropic electrical connections

3. Typical Properties

Property Still Not Mixed After Mixed / Cured
Viscosity @ 15 s⁻¹ 22,000 mPa·s
Viscosity @ 30 s⁻¹ 14,000 mPa·s
Shear Thinning Index 6
Work Life @ 25°C 24 h
Shelf Life @ -20°C 183 days
Cure Schedule 5 s @ 150°C under pressure
Glass Transition Temp (Tg) 100°C
Storage Modulus @ 25°C 2,400 N/mm² (344,200 psi)
Storage Modulus @ 50°C 1,950 N/mm² (282,200 psi)
Storage Modulus @ 100°C 220 N/mm² (32,000 psi)
Die Shear Strength (50×50 mil Si die to Cu/PET) 2.2 kg

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