shortage

A semiconductor shortage occurs when **demand for chips exceeds available supply**, causing extended lead times, allocation, price increases, and production disruptions for downstream customers. **The 2020-2022 Chip Shortage** The most severe shortage in semiconductor history was triggered by **COVID-19 pandemic** effects: (1) Sudden demand surge for PCs, servers, and consumer electronics as people worked/learned from home. (2) Automotive OEMs cancelled orders early in COVID, then couldn't get capacity back when demand recovered. (3) Supply chain disruptions (factory shutdowns, logistics delays). The shortage lasted **~2 years** and cost the auto industry alone an estimated **$200+ billion** in lost production. **Why Shortages Happen** **Long lead times**: Building a new fab takes **2-3 years** and costs **$5-20+ billion**. Capacity can't respond quickly to demand spikes. **Demand volatility**: End-market demand can shift suddenly (crypto mining, AI boom, pandemic). **Concentration**: A few companies (TSMC, Samsung) control most advanced capacity. **Cascading effects**: Missing one $1 chip can hold up a $50,000 car. **Shortage Impact** • **Customers**: Extended lead times (from 8-12 weeks to 40-50+ weeks), forced to redesign products around available chips • **Pricing**: Spot market prices for some chips rose **5-10×** above list price • **Auto industry**: Millions of vehicles unbuilt due to missing chips • **Foundries**: Record revenue and profits from strong pricing and full utilization **Structural Changes Post-Shortage** Governments enacted **CHIPS Act** (US: $52B), **EU Chips Act** (€43B), and similar programs to diversify and expand semiconductor manufacturing. Companies shifted from just-in-time to **just-in-case** inventory strategies.