Master Bond EP3UF one-component underfill

Master Bond Inc. · Material properties and interface engineering

Purpose: Compare underfill dispensing and fillet extent against keep-outs, correlating flow, actual gaps and cure history.
Technical approach: Single-component heat-cured epoxy uses fine filler for thermal conduction and electrical insulation in microelectronic bonding/underfill.
Scope of use: Evaluate actual surfaces, gaps, dispense paths and thermal budget; narrow-gap use requires trials.
Limitations and open questions: These evaluation considerations are compiled by BLNKK from public information. They are not supplier guarantees or a mandatory submission checklist.
Scope and limitations
Narrow-gap claims guarantee neither complete filling nor no overflow. Material/thin-bondline thermal statements do not qualify package reliability; cure must suit the assembly.
What to prepare
BLNKK suggests preparing die dimensions, gaps/bumps, surfaces, keep-outs and dispense volumes/paths. Compare flow time, fillet images, voids and actual cure-temperature data with controls.
Confirm with the supplier
Confirm current full material data, viscosity/flow conditions, storage/use and cure. Agree on fillet, void, bond and aging validation; confirm quotation, packaging and made-to-order supply.
Public evidence: Master Bond publishes EP3UF uses, typical properties and cure guidance, not acceptance of your fillet/keep-out geometry.

Contact the supplier

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