Class-D amplifiers, which are used in devices such as smartphones and audio equipment, have the advantages of being compact and highly efficient, but crucially require countermeasures against noise generated by their high-speed switching. TDK has an extensive lineup of products which can provide effective noise countermeasures while ensuring high sound quality and without affecting signals. This article describes the applications and effectiveness of these products in speaker lines for various devices which use Class-D amplifiers.

Industry 4.0 is being shaped by the continuing rise in the degree of automation, by the digitalization that includes the Industrial Internet of Things (IIoT) and by high levels of energy efficiency. In this respect, TDK presents a wide range of innovative EPCOS and TDK key components.

The car of tomorrow is unthinkable without innovative electronics. Correspondingly, there is a vast range of new TDK and EPCOS components, both for conventional vehicle technology and for e-mobility.

The products in the SLF-H/LTF-D/CLF-NI-D series consist of wire-wound automotive grade power inductors provided with magnetic shielding by a ferrite ring core. Their lineup includes inductors with a wide variety of sizes and inductance values, which have the high reliability required to withstand the harsh environments of automotive use. They are ideal for application in various types of automotive equipment including meters, headlights, and ECMs.

capacitors with CeraLink FA types in modular flex-assembly technology. This space-saving design connects two, three or ten identical capacitors in parallel over the same terminals in order to increase the capacitance.

TDK Corporation has developed a new series of EPCOS single-ended aluminum electrolytic capacitors that feature a particularly compact design, a high CV product and high ripple current capability.

TDK Corporation presents CeraPlas™ HF, a compact cold plasma generator element that is based on a PZT (lead zirconate titanate) ceramic and packaged in a plastic housing. CeraPlas HF measures in at just 47.3 mm x 20 mm x 20 mm and its leads are suitable for soldering.

From simple gadgets to complex devices for the industrial IoT – they all require compact, reliable and extremely safe power supplies. CeraCharge™, the world’s first rechargeable solid-state SMD battery, is a new technology that meets all these demands.

High-power loads are a major stress factor when fuses and components are switched on, as they cause very high currents to flow. To avoid this, TDK offers ceramic EPCOS inrush current limiters, based on NTC and PTC thermistors – a strong duo when used in combination.

TDK Corporation has extended its EPCOS B32754* to B32758* series of AC filter capacitors. They now cover a range of voltages from 250 V AC to 400 V AC and offer capacitances of between 1 µF and 70 µF.