Applications

LOCTITE® ABLESTIK ICP 4001 – Electrically conductive adhesive for die attach in semiconductor and microelectronic packages

  • Item Name: LOCTITE ABLESTIK ICP 4001
  • Manufacturer: Henkel
  • Product Category: Electrically Conductive Adhesive
  • Technologies: Silicone-based, one-component, electrically conductive, high flexibility
  • Applications: Mounting components in circuit assembly, high-vibration environments, high-temperature applications
  • Color: Silver
  • Cure Type: Heat cure (35 minutes @ 140°C)
  • Package Size: Contact Techniq VN for details.
  • Shelf Life: 4 months (-40°C)

1. Product Overview

LOCTITE ABLESTIK ICP 4001 is a one-component, silicone-based, electrically conductive adhesive designed for attaching devices and mounting components in circuit assembly applications. It provides:

  • High flexibility for reliability in vibration-prone environments.
  • High adhesion to various substrates.
  • Good electrical conductivity due to its silver filler.
  • High-temperature resistance with an operating range of -40°C to 200°C.

2. Applications

  • Electronics and circuit assembly.
  • Electrical conductive adhesive (ECA) applications.
  • Mounting components exposed to prolonged vibrational energy and high operating temperatures.

3. Typical Properties

Uncured Material
Property Value
Solids Content 85%
Viscosity @ 15 s⁻¹ 40,000 mPa·s (cP)
Increase in viscosity after 24 hours at RT <50%
Thixotropic Index 2.1
Density 3.9 g/cm³
Shelf Life (@ -40°C) 4 months
Curing Performance
Cure Schedule Time & Temperature
Heat Cure 35 minutes @ 140°C
  • Weight Loss on Cure: <0.5%
Cured Material Properties
Property Value
Hardness (Shore A) >75
Elongation at break >30%
Young’s Modulus (E) @ 0°C 40 N/mm² (5,800 psi)
Coefficient of Thermal Expansion 370 ppm/°C
Thermal Conductivity 2.3 W/(m·K)
Electrical Properties
Property Value
Volume Resistivity 4×10⁻⁴ ohm·cm
Shear Strength
Property Value
Tensile Lap Shear Strength (Al to Al) >1.7 N/mm² (245 psi)

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