L8104 RF PIN Diode CEL L8104 RF PIN Diode is designed for high-power antenna switches in two-way radios. This diode features extremely small reverse bias, low capacitance at zero bias, low series resistance, high isolation, and very low insertion loss. The L8104 RF PIN diode offers a capacitance of 1.2pF, 0.75Ω maximum forward series resistance, and 3kΩ typical parallel resistance. L8104 is lead-free, RoHS-compliant, and is available in a hermetic ceramic MELF package.