Applications

LOCTITE® ABLESTIK XCE 3104XL – Electrically conductive adhesive film for die attach in semiconductor packaging applications

  • Item Name: LOCTITE ABLESTIK XCE 3104XL
  • Manufacturer: Henkel
  • Product Category: Electrically Conductive Adhesive
  • Technologies: Epoxy, Thermosetting, Electrically Conductive
  • Applications: Surface mount devices, fine stencil and screen print applications
  • Color: Silver
  • Cure Type: Heat cure (low-temperature cure available)
  • Package Size: Contact Techniq VN for details.
  • Shelf Life: 6 months

1. Product Overview

LOCTITE ABLESTIK XCE 3104XL is a one-component, thermosetting, electrically conductive epoxy adhesive designed for fine stencil and screen print applications in SMT assembly. It features a controlled particle size, low-temperature cure, and Pb-free alternative to solder, making it suitable for high-speed stencil printing with long work life.


2. Applications

  • Assembly of surface mount devices (SMDs)
  • Compatible with Sn/Pb, Sn, OSP coated Cu, and Ni/Au surfaces
  • Suitable for fine pitch printing using standard SMT equipment
  • Low-temperature cure capability with no post-cure required

3. Typical Properties

Uncured Properties

Property Value
Appearance Silver
Viscosity (Brookfield CP52, 5.0 rpm) 54,000 mPa·s (cP)
Shear Thinning Index 4.9
Pot Life (Static) 2 days
Shelf Life @ -40°C 183 days

Curing Conditions

Cure Schedule Time & Temperature
Standard Cure 15 minutes @ 125°C
Alternate Cure 10 minutes @ 150°C
Reflow Compatibility Cures completely in a standard reflow cycle

Cured Properties

Property Value
Coefficient of Thermal Expansion (CTE) 46 ppm/°C (below Tg), 160 ppm/°C (above Tg)
Glass Transition Temperature (Tg) 109°C (TMA), 136°C (DMA)
Thermal Conductivity 1.8 W/m-K
Modulus @ 25°C 6,600 N/mm² (957,250 psi)
Modulus @ 150°C 400 N/mm² (58,015 psi)
Volume Resistivity 0.0005 ohm-cm

Performance & Reliability

Test Condition OSP Cu Ni/Au
Contact Resistance (Initial/After 1,000h @ 85°C, 85% RH) 16/16 mΩ 16/16 mΩ
Contact Resistance (Initial/After 1,000h @ 125°C) 17/14 mΩ 15/16 mΩ
Die Shear Strength (100×100 mil Si die on Al leadframe) ≥28 Kg
Component Shear Strength (0805 SnPb resistors) 6.9 Kg (OSP Cu), 6.7 Kg (Ni/Au)

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