The AXT540124 is a 40-pin socket connector from the F4S series, designed for board-to-FPC applications. It features a space-saving design with a narrow 0.4 mm pitch and achieves a low mated height of 1.0 mm. This connector incorporates Panasonic's "TOUGH CONTACT" construction for high contact reliability and a simple lock structure that provides tactile feedback. It is rated for 60V AC/DC and 0.3 A per pin, operating over a temperature range of -55°C to +85°C. The robust and compact design makes it ideal for mobile devices and industrial equipment where space and reliability are critical.