Board to Board Connectors & Mezzanine Connectors are in stock with same-day shipping at Mouser Electronics from industry leading manufacturers. Mouser is an authorized distributor for leading board to board & mezzanine connector manufacturers such as 3M, Amphenol, Harting, Hirose, JAE, Molex, Panasonic, Samtec, TE Connectivity & more. Please view our large selection of board to board connectors & mezzanine connectors below.