TDK releases PLEC69B Thin-Film Inductors for AI Data Centers and Optical Transceivers

On August 26, 2025, TDK Corporation announced the expansion of its PLEC69B series of thin-film inductors, designed for separating data signals from power in optical transceivers used in AI data centers. Mass production of these components, measuring 1.2 x 0.6 x 0.95 mm (L x W x H), began in August 2025. The rising demand for high-speed, high-capacity optical transceivers, driven by AI adoption, has increased the need for efficient bias-tee circuits, which superimpose signals and power on a single transmission line. The PLEC69B inductors leverage impedance characteristics to prevent signal leakage into the power side.

The PLEC69B series offers an inductance of 10 μH in a 1206 case size, operating across a frequency range of 10 MHz to 200 MHz to ensure signal separation and maintain communication quality. The inductors feature a DC resistance of 1.4 Ω (typical), 70% lower than similar products, reducing power loss and heat generation. The rated current (Isat) of 0.2 A is 1.7 times higher than comparable products, and the component supports an operating temperature up to +125°C. Its compact size minimizes PCB space requirements.

The inductors are used in bias-tee circuits for optical communication modules and power supply circuits in smartphones, true wireless ste...