EOL End-of-Life — when a manufacturer stops making a part. Like a car model being discontinued.
PCN / PDN Product Change/Discontinuation Notice — the official letter from a manufacturer saying a part is ending. 30% arrive with zero warning.
BOM Bill of Materials — the complete list of every part in a product. Like a recipe for manufacturing.
LTB Last-Time Buy — a final purchase order when a part is discontinued. Like stocking up on a discontinued product before it vanishes.
SMT Surface-Mount Technology — the process of placing electronic components onto circuit boards. SMT line stoppages cost ~$3,500/hour.
Lifecycle How long a component stays in production — from launch to end-of-life. Consumer chips average 4.7 years; industrial products need 15+.