Products
Flat Component Division
Flexible flat cables engineered for compact mass termination and board-to-board connections in increasingly dense electronics.
SEPM’s Flat Component Division focuses on flexible flat cable (FFC) manufactured for simpler, more efficient wiring in computers and electronic devices — historically including DVD, CD, VTR, audio, office-automation equipment, and game consoles. These cables are commonly used for mass termination with connectors or for straightforward board-to-board links where round-wire harnesses would waste space.
The division’s flagship public brand is SUMI-CARD™: flat rectangular conductors sandwiched between electrical-grade insulation films. That geometry reduces wiring volume and supports dynamic motion — for example trailing cables that follow a printer head. As customers demanded thinner constructions and finer pitches, SEPM highlighted products such as 0.5 mm pitch SUMI-CARD™, plus shielded constructions for EMI-sensitive signal paths such as scanner cabling.
Typical application patterns
- Board-to-board interconnect — short, ordered conductor arrays that keep pinouts aligned without bulky individual wires.
- Mass termination — mating FFC to connectors where assembly speed and repeatability matter on high-volume lines.
- Dynamic flex — moving axes in printers, optical drives, and other mechanisms that repeatedly bend a cable rather than a wire bundle.
- EMI-aware signal routes — shielded FFC where scanners or high-frequency lines need an additional shielding layer.
Product families called out on the archived site
Legacy product lists for the Flat Component Division include SUMI-CARD™, Au-plated SUMI-CARD™, shielded SUMI-CARD™, combined Au-plated shielded options, high-frequency SUMI-CARD™, high-temperature / high-humidity grades, halogen-free HIGH-rating SUMI-CARD™, and jumper leads. Exact styles and drawings change over time; treat this page as orientation, then confirm part numbers with SEPM sales.
Jumper leads as a complementary geometry
Alongside laminated flat conductors, the division also produces jumper leads that use flexible round conductors. Archived descriptions emphasise high-temperature endurance, flame retardance, and long bending life — aided by constructions such as OM-1S, with a stainless-steel core surrounded by tin-plated copper wires. Jumper leads with flat rectangular conductors are also described, giving designers another route when round-wire flex behaviour is preferred over classic FFC laminate.
Why FFC still matters in 2026 product planning
Even as connectors and rigid-flex PCBs evolve, flat cable remains a practical middle ground: lower tooling cost than full rigid-flex in many cases, cleaner routing than discrete wire, and predictable pitch for automation. Malaysian production capacity for FFC — paired with SEPM’s neighbouring electronic-wire plants — is historically attractive for regional electronics OEMs that want interconnect sourced close to Southeast Asian assembly.
Continue with the SUMI-CARD™ deep dive, or compare against the Electronic Wires Division when your design needs UL-style insulated round wire rather than laminated flat conductors.