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What Sumitomo Electric makes for data centers

public · HQ Osaka, JP · sumitomoelectric.com

Sumitomo Electric supplies optical components and fiber transceivers for data-center networks through its Device Innovations unit, and fiber, connectors and ultra-high-count ribbon cable for high-density structured cabling through Sumitomo Electric Lightwave. It also makes copper alloy products and metal cables used in data-center wiring.

Listing
Tokyo Stock Exchange: 5802.T· 2223 JPY -1.27% · mkt cap 6.93T JPY0
Snapshot 2026-08-28T02:17:39Z — nightly, not real-time. · Chart on TradingView ↗
Exposure
4 parts across 3 layers
No disclosed data-center revenue share on file.

Parts, by layer

Layer 3 — Networking & interconnect

Layer 7 — Electrical: power distribution (grid to rack)

PartRoleConfidenceCompetitorsNote
LV cable, wire, tray, racewaymanufacturerinferredBelden, Furukawa, Hengtong, Nexans, Prysmian, Cerro/Marmon

Layer 8 — Power generation & energy supply

PartRoleConfidenceCompetitorsNote
HVDCmanufacturerinferredFurukawa, GE Vernova, Mitsubishi Electric, NKT, Nexans, Prysmian

Verification: enriched, last verified 2026-08-27. Sources: sumitomoelectric.com · sumitomoelectriclightwave.comMarkdown · JSON