FSK-11.4A-20 is a flexible flat-ribbon jumper cable manufactured by TE Connectivity (Buchanan brand) designed for electronic interconnection applications. The product features multiple conductor pitch options ranging from 1.00 mm (0.039 in) to 5.08 mm (0.200 in), with wire gauges from AWG 28 to AWG 24 depending on pitch selection. It supports various insulation materials including Nomex, Polyester, Teflon, and Kapton, with customizable pin arrangements and bend configurations (E through L bends available for select pitches). The jumper offers insulation lengths from 0.50 inches to 30.0 inches in 0.100-inch increments plus 0.25-inch and 0.75-inch options, with a minimum bend radius of 3.18 mm across all conductor pitches. This product is commonly used in automotive and industrial applications where flexible, space-efficient interconnection solutions are required.