Applications

Accessories
Adhesives
Cleaners
Equipment
Lubricants
Others
Primer, Activator
Solder Materials
Solvent
Tapes
Technology
Thermal Management

LOCTITE® ECCOBOND UF 3711 – UV-curable epoxy underfill – Enhances chip reliability under high temperature and humidity conditions

  • Item Name: LOCTITE® ECCOBOND UF 3711
  • Manufacturer: Henkel Corporation
  • Product category: Epoxy Adhesive for Electronics
  • Technologies: Epoxy technology with UV curability
  • Applications: Edgebond, encapsulation, and active alignment
  • Color: White paste
  • Cure type: UV cure or UV + heat cure
  • Package size: Contact to Techniq VN for details.
  • Shelf life: 365 days (when stored at -20°C)

1. Product Overview

LOCTITE® ECCOBOND UF 3711 is a UV-curable, thixotropic, low-CTE epoxy adhesive designed for edgebonding, encapsulation, and active alignment applications. It enhances chip reliability, providing a uniform, void-free encapsulant that improves thermal cycling performance and distributes stress away from solder joints.

2. Applications

  • Edgebonding
  • Encapsulation
  • Active alignment

3. Typical Properties

Uncured Properties

Property Value
Viscosity @ 25°C (mPa.s) 35,000
Thixotropic Index 4.6
Specific Gravity 1.78 g/cc
Work Life 72 hours
Shelf Life (-20°C) 365 days

Curing Performance

  • UV Cure: 365 nm UV LED, 700 mW/cm², 7,000 mJ/cm²
  • Secondary Heat Cure (for shadowed areas or >4mm depth):
    • 120°C for ≥10 min
    • 100°C for ≥20 min
    • 80°C for ≥40 min

Cured Properties

Property Value
CTE (α1/α2) 20 / 62 μm/m/K
Glass Transition Temperature (Tg) 150°C
Tensile Modulus @ 25°C 13.6 GPa
Cure Shrinkage (Volume) 1.4%
Water Absorption (168h, 85°C/85%RH) 1.1%

Electrical Properties

Property Value
Dielectric Constant / Dissipation Factor @ 5 GHz 3.3 / 0.0108
Volume Resistivity 2.91×10¹⁵ Ω·cm
Dielectric Breakdown Strength 24 kV/mm

Mechanical Performance

Property Value
Die Shear Strength (3×3 Glass Die to FR4) >12 kgf (>1,740 psi)

BERGQUIST microTIM mTIM 1028 Thermal Interface Coating High performance thermal management solution for nickel finished heat sinks, optical transceivers, and data center liquid cooling systems

BERGQUIST microTIM mTIM 1028 is purpose built for riding cage assemblies in servers, switches, and routers, interfacing with electroless nickel plated copper or aluminum heat sinks. It ensures stable operation in high power transceiver modules while also extending applicability to liquid cooling components, heat pipes, and fin based dissipative structures.

RELATED PRODUCT

Contact Technical Support

Leave your information or connect via Hotline, and our expert team will reach out immediately to provide professional consultation and customized solutions.

(+84) 889 901 929

Email: info@techniq.vn

Our Technical Support Team is on hand from 8:30 AM to 5:30 PM (GMT+7).

For requests outside these hours, please submit your request form and we will respond at the earliest opportunity.