Electronics manufacturing is defined by a relentless tension: increasingly complex products, increasingly tight tolerances, and margins that leave almost no room for process error. A solder defect on a 0402 component might cost a fraction of a cent to fix if caught at AOI — and hundreds of dollars if it reaches a customer return. Process improvement in electronics isn't abstract. It has a direct price tag on every board.
In electronics manufacturing, the cost of a defect isn't fixed — it scales dramatically with where in the process it's found. An AOI catch at the end of the SMT line costs minutes of rework time. The same defect found after functional test costs hours and often involves desoldering and replacing components that may not survive the operation. Found at a customer site, it costs the board plus logistics, plus customer relationship capital.
This 1:10:100 ratio — prevent vs. detect vs. fail — is why electronics CI pays faster than almost any other industry.
When a solder defect type rises above baseline — say, bridging on a particular package type increases from 0.3% to 1.8% — the instinct is to tweak the process parameter that seems most likely to blame. Increase squeegee pressure. Adjust paste viscosity. Change solder paste lot.
The problem with this instinct is that electronics defects are rarely single-cause. A Fishbone investigation that examines the full causal landscape — material, method, machine, measurement, environment — is far more likely to identify the true driver and the true corrective action.
VeSiMy's Fishbone and 5 Why tools structure this investigation and document the outcome — creating a traceable record that informs future events and prevents the same investigation from being re-run when the issue recurs.
"The process change that fixes this batch might not fix the next one. The root cause analysis that understands why the defect occurred is the one that prevents both."
OEE in an SMT operation is typically tracked at the equipment level. But the process losses that drag OEE down often live in the human-machine interface — changeovers, feeder setup, first-article verification, and the informal "warm-up" time that operators give equipment at the start of a run.
VeSiMy's Time Study tool captures these human-process elements that equipment monitoring systems don't track — giving the CI team a complete picture of where productive time is going.
In electronics, rework is a normalized waste that most operations accept as a cost of doing business. A structured waste identification walk of a rework area often reveals that the majority of rework events trace to a small number of process steps — and that addressing those steps upstream would eliminate the majority of rework volume.
Bottom line for electronics teams: Every rework event is a process telling you something. VeSiMy helps you listen — systematically.