Harwin 1.25mm Gecko Series PCB Sockets These Gecko series 1.25mm pitch PCB sockets have a dense 1.25mm pin spacing and a low profile miniature design offering both high performance, reliability and PCB space saving. The housings of these Gecko PCB sockets feature positive keyway polarization for accurate mating and can withstand extreme temperatures from -65 to +150°C. The highly reliable 4 finger beryllium copper contacts of these Gecko 1.25mm PCB sockets enable signal integrity when the connector is used in environments where there is high vibration and shock. These PCB sockets are available with a variety of contact postions and as through hole or surface mounting.