LOCTITE® ECCOBOND EN 3838T

Features and Benefits

This 1-part, thixotropic coating liquid provides components on PCBs a flexible, low Tg encapsulation material.
LOCTITE® ECCOBOND EN 3838T is a black, thixotropic coating liquid for encapsulating components on PCBs. It's typically used for CSP and BGA package applications. It's formulated with an epoxy-based resin and cures fast at moderate temperatures. When cured, it provides physical protection, stable electronic performance, and temperature/humidity/bias testing protection.
  • Low modulus
  • Highly reworkable
  • Fast curing
  • Thixotropic for ease of application
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Technical Information

Coefficient of thermal expansion (CTE), Above Tg 217.0 ppm/°C
Coefficient of thermal expansion (CTE), Below Tg 57.0 ppm/°C
Cure schedule, @ 130.0 °C 8.0 min.
Cure type Heat cure
Glass transition temperature (Tg) 2.0 °C
Viscosity, Brookfield CP51, @ 25.0 °C Speed 20 rpm 6700.0 mPa·s (cP)