山下マテリアル List of Products and Services

Attention all users of electric wires, wire harnesses, busbars, and bus bars! "Big Elec SMT Connect" (High Current FPC Surface Mount Connector Split Specification) is a compact flexible circuit board that allows for high current wiring even in extremely small spaces, thanks to its flat shape. It can be offered as a solution that significantly enhances design flexibility. The highly flexible circuit board allows for component mounting and can be used in bent configurations, making installation in tight spaces easy. Furthermore, its thinness contributes to space-saving. We propose an excellent high current wiring solution. Please give Big Elec SMT Connect a try!

BigElec is a flexible printed circuit board designed for high current wiring, intended as an alternative to busbars and wire harnesses, featuring a slim and flat design. Similar to printed circuit boards, it can accommodate pattern formation and assembly according to your requirements. We have newly introduced the "BigElec Standard Specification Products," which are easy to implement for connections between screw terminals. The BigElec Standard Specification Products have no initial costs, allowing for reduced upfront expenses. 【BigElec Standard Specification Product Specifications】 ■ Layers: 2 layers, 4 layers, 6 layers, 8 layers ■ Wiring width: 8mm to 11mm (integers only) ■ Total length: 30mm to 210mm (integers only) ■ Terminal screw diameters: M3 (hole diameter φ3.8mm), M4 (hole diameter φ4.4mm), M5 (hole diameter φ5.4mm), M6 (hole diameter φ6.5mm), M8 (hole diameter φ8.5mm) *For more details, please download the PDF or contact us.

Big Elec is a flexible printed circuit board designed for high current wiring, achieving a flat shape and thin profile as an alternative to busbars and wire harnesses. It boasts three remarkable features. 【Feature 1】 Low Inductance Thanks to its unique structure, it achieves lower inductance compared to conventional wires with the same conductor cross-sectional area. When switching high currents at high frequencies, high inductance can cause significant voltage spikes, potentially damaging high current-compatible electronic components. The low inductance of Big Elec reduces voltage spikes, contributing to the reliability of high current-compatible electronic components. 【Feature 2】 Flat Shape and Flexibility Its unique structure allows for a thin conductor, flat shape, and flexibility. It is flatter than traditional wire harnesses and can handle higher currents than conventional flexible printed circuit boards. 【Feature 3】 High Design Freedom It ensures design freedom and usability similar to printed circuit boards. Pattern wiring and external shapes can be customized according to requirements. It also supports the mounting of electronic components and connectors using paste solder.