Late-September 2026 Shortage Watch: Discretes and Analog Turn Red as Lead Times Stretch

What changed #

The September build season is not loosening across the board — the tightest pressure is moving into discretes, analog and passive components, on top of the MCU and FPGA lines already under allocation. Three dated market signals from mid-September 2026 point the same way.

A supply-risk report assessed on 2026-09-11 (Week 37, comparing W36 against W37) upgraded analog ICs and discrete devices from yellow to red, lifting its overall rating to 6 red / 2 yellow / 2 green. The same report describes a mature-node "triple squeeze": 8-inch wafer capacity down about 2.4% in 2026 at 85–90% utilization, power-component lead times quoted at 30–52 weeks, and analog, MCU and power scheduling described as constrained for another 6–12 months.

On the discrete side, Diodes Incorporated is reported to be in a structural shortage: lead times that historically ran 8–10 weeks have extended to 52 weeks or more, with a broad price increase of roughly 20% across most product lines. Reporting attributed to ASC Global and Fusion Worldwide (Q3 2026) ties the squeeze to surging AI-server demand for timing ICs, MOSFETs and SiC Schottky diodes, compounded by the late-2025 Nexperia supply crisis that pushed displaced customers toward Diodes Inc and overwhelmed its backend capacity. The constraint is described as persisting through the rest of 2026 and into 2027.

A third signal is capacity redirection inside passives: Murata is reported to be discontinuing part of its GRM/GRJ/GRT MLCC families from FY2026 to shift output toward high-capacity AI-grade parts, narrowing generic MLCC supply at the margin. A separate distributor notice for the second half of 2026 flags PCB base-material allocation (laminates covering only 80–90% of demand) with board lead times moving from 2–4 to 3–6 months, and certain MCU families still quoted above 30 weeks.

Why buyers should care #

This is a surgical, category-specific shortage rather than a catalog-wide one, which makes it harder to plan around. A single BOM line — one Schottky rectifier, one power MOSFET, one analog op-amp or voltage reference — can move from stock to 40-plus-week delivery without a broad-market warning. Budgets built on 2024–2025 lead-time assumptions break when one line triples in wait time, and the Nexperia-linked spillover shows how a crisis at one supplier cascades into allocation at another.

The discrete and analog squeeze also hits the unglamorous parts that sit in power stages and signal-conditioning circuits across long-lifecycle industrial, medical and automotive designs — exactly the components with the longest re-qualification cycles.

Affected component areas #

• Discretes: Schottky and rectifier diodes, power MOSFETs, SiC Schottky (Diodes Inc, Nexperia-spillover families)
• Analog and mixed-signal: op-amps, voltage references, data-converter support, precision analog on mature nodes
• Power ICs and smart power stages: PMICs and DrMOS-class devices on 30–52-week delivery
• Passives: high-capacitance and automotive AEC-Q200 MLCC, where Murata line cuts tighten generic supply
• STM32 and automotive/industrial MCUs still flagged at 40–50-week delivery on some families
• PCB base materials and modules (LTE, GNSS) where substrate allocation adds months

RFQ and sourcing checks #

Practical takeaway #

Treat late-September 2026 as a verify-before-order market for discretes and analog, not just for MCUs and FPGAs. Pull the exact manufacturer part numbers on your constrained lines, confirm live delivery dates and lot condition with an authorized or qualified distributor, and start second-source qualification now where lead times exceed your program horizon. Forecasts do not replace MPN-level checks — use the LimChip part pages and RFQ path to confirm package, date code and availability for the specific devices you ship.

Sources:

• Supply-risk report, Week 37 (assessed 2026-09-11; W36 vs W37 comparison; distributor/market-intelligence, not official vendor guarantees).
• Diodes Incorporated shortage reporting, Q3 2026 (ASC Global; Fusion Worldwide) — lead-time and price-move signals, distributor-reported.
• Distributor market notice, second half of 2026 (PCB base-material allocation, module lead times).
• Murata MLCC product-line change, FY2026 (public product-portfolio note; AI-grade capacity redirection).