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Flexible Flat Cable for High Frequency wave

SEI produce and distribute "SUMI CARD" and "SHIELD SUMI CARD" as the leading company of FFC(Flexible Flat Cable).
"SHIELD SUMI CARD" is used as the internal wiring which is required a noise countermeasure for the office automation equipment such as a printer scanner copier, etc and also consumer electro nics equipment auch as Audio, Video, and PC peripheral equipment such as DVD,CD-drive.
The NEW products of FFC which correspond to 100 Ω system differential transmission method for HIGH FREQUENCY SIGNALING APPLICATION is placed on the market.

The phenomenon which affects operation of an electronic machine of whether the radio wave an electronic machine generates from an electronic circuit during operation is the surrounding one.
*EMI (Electro Magnetic Interference) : The phenomenon by which a radio wave from an electronic machine has an influence on operation of an electronic machine in circumferential.
*Impedance: The resistance which occurs to a circuit when letting alternating current run, (alternating-current resistance)
*Differential transmission method: It's the feature that low power consumption by low amplitude and by a transmission method suitable for high-speed digital signal transmission.

SUMI CARD is a registered trademark of Sumitomo Electric Industries, Ltd.
SHIELD SUMI CARD is registered trademark of Sumitomo Electric Industries, Ltd.