Interconnect Systems, Inc.
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BGA Reballing


Applications

Most Semiconductor suppliers have converted to lead free packaging
creating compatibility and reliability dilemmas for Military, Aerospace and Hi-Rel applications.

ISI’s process of removing lead-free (RoHS) solder spheres
then attaching leaded Sn63Pb37 eutectic spheres,
has been qualified by leading Commercial, Industrial, Military and Aerospace companies.

In response to the increasing demand for reballing, ISI has made substantial investments
in process and capacity upgrades including automated 100% optical inspection.


Process Summary
Dimensional specifications and processes are tailored to each part
Specific control parameters for each phase of handling, production, controls for temperature, humidity, ESD protection, ball size/position tolerance specifications, automation, cleanliness, inspection and repackaging are clearly defined and indicated
Incoming Inspection procedures in place per QAP
MSL (Moisture Sensitivity Level) requirements are strictly observed
Ball Removal process is determined and specified based on the part to control temperature and protect the solder ball pads of each device
Ball Replacement utilizing in house high efficiency and high accuracy assembly tooling for ball placement
Controlled Solder Profiles using zone controlled reflow ovens
First Piece Inspection prior to line production
Post Ball Attach Cleaning with cleanliness procedures monitored and measured using
an Ionograph as required
Part Marking available per customer specifications on request
100% Automated Optical Inspection using Nikon Nexis or RVSI model LS6000 for documented true position, co-planarity and flatness as required
Final Inspection per QAP
Package in either customer supplied packaging, JEDEC trays or tape & reel per EIA-481
with nitrogen purged dry pack bags

All work is performed at the Interconnect Systems, Inc. ISO 9001:2000 Certified facilities in Camarillo, California. This ISI facility is currently Reballing in both high and low production volumes.

ISI Reballing Summary.PDF
ISI Reballing Checklist.PDF
Inspection & Testing



 



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