WE-KI HC SMD Wire Wound Ceramic Inductors Würth Elektronik WE-KI HC SMD Wire Wound Ceramic Inductors feature a quality factor (Q-factor) that is 40% higher than typical ceramics and up to 16GHz self-resonant frequency. WE-KI HC inductors offer high currents up to 2.3A and low DC resistance (up to 60% reduced compared to typical ceramics).