MLCC Lead Times Stretch to 52 Weeks as AI Demand Bites

MLCC supply, already tiered between commodity and high-end, has taken another step tighter. Korean media reported on 20 October that Samsung Electro-Mechanics' MLCC order backlog now stretches to 52 weeks, with shortages no longer confined to high-value parts. Distributor commentary through October puts general-purpose 1 uF to 22 uF values at sharply reduced channel inventory, and 10 uF-and-above X5R/X6S parts quoting 20 to 26 weeks at distribution.

Price announcements have followed. Murata raised prices 15-35% on high-capacitance, automotive and RF products serving AI server demand, and Taiyo Yuden lifted low-capacitance consumer and automotive grades 6-13%. Industry forecasts for the second half of 2026 put high-capacitance MLCC up 15-35% and mid- to low-end parts up 10-20%. Not everything is short: 0402/0603 100 nF commodity parts remain plentiful and cheap.

For BOM owners, the arithmetic is uncomfortable but manageable. On a managed industrial switch board, passives run about 10% of BOM value and MLCC roughly 60% of that, so a broad MLCC price move costs 2-4% of total BOM. The lead time hurts more than the price: a 20-26 week quote means an October decision lands in March, and a January production slot sits empty in between.

The practical playbook, in order of payoff: lock long-term agreements only on the tight part numbers (10 uF and 22 uF X5R in power paths), keep deeper buffers on industrial and wide-temperature grades, qualify a second source before you need one (domestic alternates take three to six months to approve), and design dual footprints where layout allows so one part number is never a hard constraint.

For buyers sourcing through us, see our component catalog for available stock, and treat any end-of-life notice from Murata or Samsung Electro-Mechanics as a deadline rather than a footnote: capacity is shifting toward AI server parts and some series are being retired.