RP-MCX Connectors Reverse polarity MCX connectors have the same tooling as standard MCX miniature connectors, but the contact pins are reversed to comply with FCC Part 15 requirements. Their small size (30% smaller than SMB connectors) and snap-on connection are ideal for dense packaging arrangements such as those in GPS and automotive applications. They provide repeatable electrical performance from DC to 6GHz. RP-MCX female surface-mount connector