The demands of moisture sensitive devices (MSDs) and the
standards that govern their handling have generated additional
manufacturing processes and procedures. In some cases, these
processes and procedures are no longer needed because the
standards have changed, are conservative in application or
even misinterpreted. Regardless of these realities, some processes,
like baking, have become entrenched – a permanent
fixture that may waste precious time, energy and money.
Much has been written on the subject of electrostatic discharge (ESD) and moisture and their destructive impact on sensitive electronic devices. With today’s ever-increasing densities and shrinking package sizes, damage is caused by even lower potentials and less moisture than ever before. It’s time to take a renewed look at the issues and consider better ways to monitor and document the environment in the electronics manufacturing industry.