The XF3M-4015-1B is a rotary backlock connector designed for reliable connection with 0.3 mm thick FPC/FFC cables. This model features 40 dual-contact pins on a 0.5 mm pitch, with gold-flash plating for enhanced durability of up to 20 insertion cycles. It is rated for 0.5 A AC/DC and 50 V AC/DC, with a maximum contact resistance of 50 mΩ. The connector operates within a temperature range of -30 to 85 °C and its rotary backlock design provides improved cable insertion and a secure locking feel, making it suitable for high-density applications in compact electronic devices.