ESD8111 ESD Protection Diodes onsemi ESD8111 ESD Protection Diodes safeguard high-speed data lines by offering ultra-low capacitance and a low ESD clamping voltage. The onsemi ESD8111 is ideal for protecting voltage-sensitive high-speed data lines. This device is Pb-free, Halogen-free/BFR-free, and RoHS-compliant.