Heller vacuum solder reflow

Heller Industries, Inc. · Packaging processes and engineering validation

Purpose: Solder-void reduction needs vacuum control without introducing splash or component displacement.
Technical approach: Closed-loop multi-step pump-down and refill control pressure during reflow.
Scope of use: Consider vacuum- and temperature-compatible assemblies; qualify fine-pitch workpieces.
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
It does not guarantee zero voids or repair existing bridges. Rapid pump-down may cause splash or displacement; excessive dwell can deplete flux and promote dewetting.
What to prepare
BLNKK suggests preparing alloy, flux, pitch and actual reflow/vacuum traces, with X-ray void, bridge and displacement results.
Confirm with the supplier
Confirm device pressure tolerance, chamber/control options and trial windows for pump-down, dwell and refill.
Public evidence: Heller documents vacuum control and the trade-offs among pump-down, dwell and flux depletion.

Supporting references

Find the company’s contact details and ask about this solution through its official channels.