Component Process Change Notice Technical Data Baseline Qualification Requirements
Process change notices demand technical baseline audits, J-STD-046 notifications, and JESD47 qualification data to clear component changes without recall risk.
Substrate Relocation
Meaning
Fabrication changes occur when a printed circuit board manufacturer moves its base material production to a different facility. Implementing a substrate relocation requires careful validation to confirm that the electrical and mechanical properties of the board remain within specifications. This transfer can affect moisture absorption and thermal expansion characteristics.
Process Transfer
Shifting production to a different facility involves moving specialized machinery or setting up identical processing lines. The manufacturer must calibrate the new equipment to replicate the temperature profiles and chemical wash cycles of the original location. Even minor differences in water quality or oven airflow can alter the structural integrity of the finished laminate.
To minimize risk, engineers run pilot batches to ensure that the trace etching and copper plating meet standard tolerancing limits. This validation phase must be completed before starting high-volume runs.
Material Verification
Laboratory tests must verify that the boards produced at the new site match the original mechanical and electrical performance. These tests measure dielectric constant and thermal stability under high-temperature reflow conditions. Structural integrity is confirmed by cross-sectioning samples to inspect for voids or delamination.
Client Notification
Industrial standards require the manufacturer to issue a formal product change notice before shipping boards from the new facility. This document provides the qualification test data and the transition timeline to the buying organization. Customers use this information to determine if they need to perform their own in-house testing before accepting shipments.