WE-TCI Thin Film Chip Inductors Würth Elektronik WE-TCI Thin Film Chip Inductors provide tight tolerances, small inductance values, and stable inductance in high-frequency circuits. The WE-TCI series features high self-resonant frequency, outstanding temperature stability, and a -40°C to +125°C operating temperature range. Würth Elektronik WE-TCI Thin Film Chip Inductors are offered in two sizes, 0201 and 0402.