EMI/RFI Shielding for High-Reliability Connectors Harwin EMI/RFI Shielding for High-Reliability Connectors are made from aluminum alloy with electroless nickel plating to ensure strength and performance. The EMI/RFI shielding provides screening and increased durability for Gecko 1.25mm-pitch and Datamate 2mm-pitch high-reliability connector ranges. Harwin EMI/RFI Shielding is available in male or female cable options and male board mounts.