Strait of Hormuz: The Supply Chain Impact Is Here

The Strait of Hormuz carries oil. It also carries the nickel, tin, and copper that become the components on your board.

The Hormuz disruption is now a sustained logistics fact, not a headline. The strait handles ~20% of global seaborne oil transit, but the second-order effect is what reaches your BOM: raw-material shipping lanes for Southeast Asian and Gulf-routed metals are disrupted, and rerouting around the Cape of Good Hope adds 12–18 days to a nickel-matte shipment.

Observed effects:

Nickel matte — rerouted via Cape of Good Hope, +12–18 days transit.
Tin ingot — delayed 2–3 weeks; this compounds the Myanmar Wa State ore suspension already removing ~10% of supply.
Copper cathode — some shipments halted outright pending route resolution.
Korean supplier spot premiums — 15–20% on nickel and tin for prompt delivery.

This is why the May metals board reads the way it does: copper $13,335/t, tin $51,613/t, nickel $18,985/t. The prices are the logistics shock made numeric.

💡Material substitution

For board-level shields where the requirement is electric-field shielding effectiveness — the majority of cases — tin-plated cold-rolled steel is a strong alternative to nickel-silver. It sidesteps the nickel premium and the pending Indonesia export tax. Reserve nickel-silver and mu-metal for applications that genuinely need their specific mechanical or low-frequency magnetic properties.

Korean Manufacturer Spotlight: KEC Semiconductor

KEC Semiconductor, founded 1969 and headquartered in Gumi, Korea, is Korea's largest discrete semiconductor manufacturer — diodes, bipolar transistors, MOSFETs, and linear voltage regulators.

Why KEC matters to a US engineer in 2026: discrete semiconductors are the parts that quietly stall a build. They are low-margin, single-sourced by habit, and overlooked until they go on allocation. KEC offers an AEC-Q101 automotive-qualified second source at 8–12 week lead times — a fraction of the 20–55 week MCU horizon.

POCONS connection: KEC is the discrete-semiconductor analogue of what we offer in shielding — a qualified, lower-profile manufacturer that derisks a single-sourced BOM line. Resilience is built one alternate qualification at a time.

Medical Device EMC: Enforcement Tightening

A regulatory shift that will force shield redesigns. IEC 60601-1-2:2024 (4th edition) is now the minimum EMC standard for medical electrical equipment under the EU MDR, and it expands the test envelope:

New radiated-immunity band: 5.15–5.85 GHz — covering Wi-Fi 6/6E and the proximity RF that modern hospitals are saturated with.
Conducted immunity extended to 150 kHz–80 MHz — a wider low-frequency floor.
Proximity-field immunity test points reflecting real-world wireless device density.

The implication is concrete: a device shielded and certified to the 3rd edition was never tested above ~6 GHz proximity fields or across the new band structure. A shield aperture that was adequate for the old envelope may leak at 5.5 GHz, where λ/20 ≈ 2.7 mm — many existing cable apertures and seams exceed that.

⚠️Compliance check

Confirm your test lab runs the 4th edition (2024) standard. If your existing compliance file cites the 3rd edition, budget for retest — and expect that shielding rework, not circuit rework, will be the most common fix for the new 5 GHz band failures.

Bench Note

A medical wearable pulse oximeter passed under the 3rd edition but failed 4th-edition radiated immunity at 5 GHz — proximity RF was coupling through a cable aperture in the device's board-level shield and corrupting the photoplethysmography front-end. The fix was a waveguide-below-cutoff aperture extension: the existing cable opening was lengthened into a short tube so that, below the waveguide cutoff frequency, the aperture attenuates rather than passes. The reshaped aperture cost $0.06 per unit and resolved the failure with no PCB change.

One Thing

The Strait of Hormuz carries oil. It also carries the nickel, tin, and copper that become the components on your board — and the shields that protect them. Geography was always part of your BOM. In 2026 it is the line item that moves the most.

— Mike Kwak, POCONS USA