The WH1 Series of low profile board-to-board connectors meet the needs of slim electronic devices. The connector has 0.4 mm contact spacing and a mated stacking height of only 1.0 mm. It is available in configurations from 24 to 40 positions and utilizes a double row structure to minimize space required on the board. The WH1 connector features a two-point contact structure to resist twisting stress, and a simple locking structure gives an audible “click” response when mated. The contacts have a nickel barrier to prevent solder migration and the overall connector is RoHS-compliant.