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Huitian 6631H Underfill

One-Part Epoxy · Fast Mid-Temp Cure · Reworkable

One-part heat-cure epoxy underfill. General-purpose, black, good flow and easy rework — mainly for BGA/CSP protection and FPC reinforcement in portable phones and notebooks.

  • Fast room-temperature flow for narrow gaps
  • Fast cure at 130℃×10min
  • Reworkable and halogen-free

Applications

CSP protectionBGA protectionFPC reinforcementMobile phonesNotebooks

Technical Data

ComponentsOne-part
AppearanceBlack liquid
ChemistryEpoxy
Density1.25 g/cm³
Viscosity600 mPa·s
Recommended Cure130℃ × 10 min
Service Temperature-40 to 150 ℃
Storage Modulus4000 MPa
Glass Transition (Tg)117 ℃
CTE (below Tg)45 ppm/℃
CTE (above Tg)160 ppm/℃
Packaging50 mL syringe · Code 6631H1

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