ES3401 Epoxy Adhesive for Electronics Devices

ES3401 is a one component epoxy adhesive for the application of electronic devices. This resin develops tough, strong, structural bonds which provide excellent shear, peel, and impact strength. This resin can be applied to the encapsulation of electronic products. The durability of this product is high level and this resin can pass many environmental test experiments.

Features and benefits

  • This product is solvent-free, non-volatile, which offers excellent protection and vibration resistance for electronic devices.
  • This product has excellent dimensional stability over a wide temperature range.
  • This resin offers excellent retention of electrical insulation properties under high humidity conditions. It is also effective against moisture and water and still remain the excellent retained strength o after environmental test experiments.
  • Comply to the 2011/65/EU RoHS regulations
  • Comply to Chlorine < 900ppm, Bromine < 900ppm, Chlorine + Bromine < 1500 ppm



Properties ES3401
Appearance Liquid
Color Black
Viscosity *25°C, S14, 3 rpm


270,000 ~ 460,000
Thixotropic Index 4~6


Properties ES3401
Pot Life, 25°C, days 7
Through Cured Time 120°C, min 40


Properties ES3401
Glass Transition Temp., (DSC), °C 131
CTE (*2) (<Tg), μm/m/°C 47
CTE (*2) (>Tg), μm/m/°C 161
Durometer Hardness, Shore D 90
Specific Heat 00C, J/gºC 4.76
Specific Heat 250C, J/gºC 4.87
Specific Heat 50ºC, J/gºC 5.03
Specific Heat 75ºC, J/gºC 5.27
Specific Heat 100ºC, J/gºC 5.42
Water Absorption Ratio (25°C/24hr), % 0.59
Water Absorption Ratio (80°C/24hr), % 2.06
Water Absorption Ratio (97°C/1.5hr), % 0.84
Degradation Temp (TGA 10ºC/min), ºC 318
Weight Loss Ratio @100ºC, % 0.17
Weight Loss Ratio @150ºC, % 0.33
Weight Loss Ratio @200ºC, % 0.47
Weight Loss Ratio @250ºC, % 0.83
Weight Loss Ratio @300ºC, % 2.99
Weight Loss Ratio @350ºC, % 13.50
Volume Resistivity, Ohm-cm 4.5 x 10^15
Surface Resistivity, Ohm 4.5 x 10^14
Dielectric Constant 1KHz 3.2

Technical Documents

ES3401 Technical Data Sheet

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