LOCTITE® ECCOBOND FP4530

Features and Benefits

This epoxy underfill is specifically designed for flip chip on flex applications with a 25-micron gap.
LOCTITE® ECCOBOND FP4530 snap-curable underfill is designed for flip chip on flex applications with a 25-micron gap. Upon cure, the material colour changes from blue to green.
  • Compatible with small gap sizes
  • Snap-curable
  • For flip chip on flex applications with a 25 μm gap
  • Material colour will change from blue to green when cured
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Technical Information

Coefficient of thermal expansion (CTE), Above Tg 150.0 ppm/°C
Coefficient of thermal expansion (CTE), Below Tg 46.0 ppm/°C
Cure schedule, @ 160.0 °C 7.0 min
Glass transition temperature (Tg) 145.0 °C
Viscosity, Brookfield Cone & Plate, @ 25.0 °C Spindle 52, speed 20 rpm 3500.0 mPa·s (cP)