Guide

Automotive wire trends at SEPM

How SEPM’s milestones map onto automotive interconnect — AVX wire, HEV cables, steering cable for airbags, and quality systems such as ISO/TS 16949.

22 May 2026

SEPM’s public history is not only consumer-electronics FFC. A clear automotive lane appears across milestones: automotive wire production in M4 (2005), steering cable (STC) for airbag applications (2006), HEV automotive wire (2010), STC expansion in M3 (2012), and larger AVX wire capacity in M4 (2013). Those dates matter if you are ranking Malaysian interconnect plants for vehicle or mobility programmes.

Quality scaffolding

Automotive OEMs expect disciplined quality systems. SEPM’s archive notes ISO/TS 16949 certification (2005) with a later upgrade path, alongside ISO 9001 evolution and occupational health certifications. Whether a plant still holds a given edition must be confirmed today — automotive certificates expire and migrate to IATF 16949 in many programmes — but the historical intent is unmistakable: SEPM pursued automotive-grade process discipline, not only commercial electronics approvals.

Product implications

  • STC for airbags implies controlled flex and reliability thinking inside the steering column environment.
  • HEV wire signals comfort with higher-voltage traction and hybrid architectures beginning in the late 2000s.
  • AVX expansion suggests demand for larger conductor sizes typical of power distribution rather than signal-only FFC.

FFC still appears in vehicles (infotainment, seat modules), so Flat Component know-how may co-exist with electronic wire capacity on the same campus.

Buyer diligence checklist

  1. Request current IATF / ISO certificates and scope statements.
  2. Clarify whether the SKU is produced in Johor or another Sumitomo site.
  3. Align PPAP / IMDS / substance data expectations early.
  4. Separate publicity milestones from production part approval packages.

Positioning of this guide

SEPM Guide summarises publicly archived milestones for orientation. It does not claim to be an authorized automotive distributor portal. Start commercial discussions via published contact numbers and your Sumitomo Electric channel.

Cross-read: history timeline and what is SEPM?.