ALPHA® HiTech Cornerfills


ALPHA HiTech Cornerfill is a one component, heat curable material. It is an epoxy material to be dispensed on the corners of the BGA. Upon deposition, it will not flow beneath the BGA, an important criterion to avoid contact with outer solder balls.  The cured cornerfill will help to strengthen the soldered assembled component so it can pass reliability tests such as Drop Shock, Impact Bend and Thermal Cycle (TCT). 


ALPHA HiTech Cornerfill end market is in portables such as Graphic Cards, Notebook, Tablets, as well as assembled boards in Automotive and Medical accessories. Users of the ALPHA Hi-Tech Cornerfill product can benefit from the following key product features:

  • An excellent lower cost option to conventional underfilling process since higher material volume for capillary flow is not required
  • Offers an effective process option to conventional underfilling process
  • Has excellent adhesion to FR4
  • Halogen Free


CF12-4485B

Cornerfill Epoxy

ALPHA HiTech CF12-4485B is a one-component, low temperature cure, cornerfill epoxy system. It is designed to provide protection to the solder joint during mechanical stress. 

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CF31-4010 

Heat Curable Cornerfill Epoxy

ALPHA HiTech CF31-4010 is a one component, high filler content, heat curable cornerfill. It is an epoxy- based material to be dispensed on the corners (corner bonding) or edges (edge bonding) of the BGA devices.

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