Capillary underfill for BGA/WLCSP/flip-chip
H.B. Fuller · Materials and interfaces
Research candidate · suitability unconfirmed
Official public page; sample suitability remains unconfirmed.
Research checked: 2026-10-15- Purpose
- Potential engineering use: [Underfill voids and post-cure delamination] Compare dispensing, capillary flow, cure and interface-inspection results. [Underfill fillet and keep-out interference] Compare dispense volume, path and fillet geometry.
- Technical approach
- Detailed mechanism and process conditions are not documented here. Confirm with the supplier.
- Scope of use
- Potential engineering use: [Underfill voids and post-cure delamination] Compare dispensing, capillary flow, cure and interface-inspection results. [Underfill fillet and keep-out interference] Compare dispense volume, path and fillet geometry.
- Limitations and open questions
- [Underfill voids and post-cure delamination] Identify the first defective process stage; product capability does not prove void-free filling. [Underfill fillet and keep-out interference] Use actual gaps, wetting and cured dimensions; low viscosity or precise dispensing does not guarantee clearance. Supplier confirmation of samples, specifications and service availability is required; improvement has not been demonstrated.
- Public evidence
- The official source lists Capillary underfill for BGA/WLCSP/flip-chip.
Supporting references
Contact the supplier
Find the company’s contact details and ask about this solution through its official channels.
Potential uses by engineering problem
Underfill voids and post-cure delamination in large multi-die packages
Compare dispensing, capillary flow, cure and interface-inspection results.
Identify the first defective process stage; product capability does not prove void-free filling.
View engineering problem →Underfill fillet interference with keep-out areas
Compare dispense volume, path and fillet geometry.
Use actual gaps, wetting and cured dimensions; low viscosity or precise dispensing does not guarantee clearance.
View engineering problem →BLNKK organizes information from public sources. A company profile does not imply a documented solution. Applicability still needs confirmation against your samples and engineering conditions.