HARTING SEK Mezzanine PCB Connectors are SEK straight PCB connectors based on a 2.54mm pitch. The HARTING SEK Mezzanine PCB Connectors mate with SEK male headers and extend the SEK range to offer full board-to-board and cable-to-board capability. These 2A connectors offer pin counts ranging from 6 to 64 and are ideal for use in transportation, machinery, robotics, automation, energy, and medical.