Contextual Info: Specifications ^ Contacts: phosphor bronze, standard n in. gold in mating area over 50^ in. nickel,standard; 10ju in. gold (in mating area) over 50ft in. nickel, optional; 50/j . in. gold (in mating area) over 50jit in. nickel, optional; 100/n in. 60/40 tin-lead, optional