Meaning
Procurement strategy involves identifying an alternative vendor to provide a pin-compatible version of a component to mitigate supply chain disruptions. Organizations use secondary sourcing to protect against lead time increases and unforeseen factory shutdowns. A secondary part must match the footprint and electrical characteristics of the original to avoid a redesign.
Supply Security
Cost and availability drive the decision to maintain multiple suppliers. While secondary sourcing requires an initial investment in testing, it provides a buffer against price hikes or sudden obsolescence. It prevents a single supplier from having total control over the production schedule.
Qualification Path
Testing confirms that the alternate component performs identically under all operating conditions. During secondary sourcing, engineers run vibration and thermal cycling tests to ensure the new part meets the system reliability standards. The firmware is checked for compatibility with the silicon revisions of the new vendor.
A small batch of units is often built using the new source to verify that the assembly yield remains high and that the soldering process does not require adjustment.
Revision Control
Managing two sets of parts requires precise entry in the bill of materials. The system marks these components as approved equivalents so that the assembly house can swap them during production without further approval. It keeps the line running.
