AI Infrastructure Boom Tightens MLCC Supply-Demand, Taiwan Makers Eye Overflow Orders in H2
0xBroomberg
AI server stockpiling has pushed MLCC book-to-bill ratios past their 2018 peak; Yageo led with a 10%–20% price hike in July. All three major Taiwan passive-component makers posted record-level Q2 revenue — whether they capture overflow orders from Japan and Korea in H2 will test the strength of this AI component super-cycle.
What is MLCC, and why does AI demand strain it?
MLCCs — multi-layer ceramic capacitors, fingernail-sized components found on virtually every circuit board — are among the highest-volume passive parts inside an AI server.
The AI server supply chain has entered its component-stocking phase, driving a sharp rise in demand for high-capacitance MLCCs. This means → it is not just GPUs and chips; even the most basic capacitors are being pulled into a tight supply-demand balance by AI.
The supply gap is expected to run from H2 2026 through 2027 and beyond, driven mainly by mass adoption of the next-generation Vera Rubin platform.
Book-to-bill ratios broke records — how tight is it?
The book-to-bill ratio — new orders divided by shipments; above 1.0 means orders are piling up faster than production can ship — is the most direct gauge of supply-demand tightness.
Japan's Murata hit 1.30, Korea's Samsung Electro-Mechanics 1.31, Japan's Taiyo Yuden 1.25. Taiwan's Yageo, Walsin, and Holystone ran even higher at 1.3–1.4.
In plain terms = for every dollar of product shipped, makers have $1.30–$1.40 in new orders queued. That exceeds the 2018 MLCC-shortage peak.
Yageo raised prices first — how big and how broad?
Distributor quotes began climbing in April. In July, Yageo officially announced a 10%–20% price increase, becoming the first Taiwan maker to move.
This means → the hike extends beyond the distribution channel. For the first time, it reaches OEM and EMS customers directly, covering roughly 50% of Yageo's revenue.
In plain terms = previous rounds were absorbed at the distributor level; this time the increase feeds straight into brand customers' procurement costs — a stronger signal.
How did the three Taiwan makers score in Q2?
Yageo (國巨): June revenue NT$15.4 bn (~US$478 m), up 38.9% YoY. Q2 total NT$44.5 bn, +16.5% QoQ, +35.7% YoY — an all-time quarterly high. H1 cumulative NT$82.6 bn, +29.3% YoY.
Walsin (華新科): June revenue NT$4.0 bn, +25.8% YoY. Q2 total NT$11.4 bn, +19% QoQ, +19% YoY — a second-highest Q2 on record. H1 cumulative NT$20.9 bn, +14.7% YoY.
Holystone (禾伸堂): June revenue NT$1.4 bn, +33.9% YoY (highest YoY growth since the start of the year). Q2 total NT$4.1 bn, +13.2% QoQ, +25.2% YoY. H1 cumulative NT$7.7 bn, +15.6% YoY.
What is the key thing to watch in H2?
Order backlogs at major Japanese and Korean suppliers are climbing fast, with capacity nearing full utilization. This means → Taiwan makers are well positioned to capture AI-server MLCC overflow orders from Japan and Korea in the second half.
With the pricing upcycle launched and overflow orders in play, H2 revenue upside and margin expansion at Taiwan passive-component makers will be the market's top validation point.
This reflects a broader pattern: AI infrastructure investment heat is spreading up the supply chain to the most basic components — not just marquee chips, but capacitors too are seeing their supply-demand landscape reshaped.
Content is for reference only, not financial advice.