Tech Library

Well equipped for Industry 4.0
Applications & Cases
Dec. 2018
[Application Note] AC Film Capacitors incl. Motor Run,CeraLink® Capacitors,Multilayer Ceramic Chip Capacitors,ThermoFuse Varistors,PowerHap™ Actuators

Well equipped for Industry 4.0

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.

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Combined current control
Applications & Cases
Oct. 2018
[Application Note] PTC Inrush Current Limiters,NTC Inrush Current Limiters

Combined current control

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.

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Compact overvoltage protection
Products & Technologies
Oct. 2018
[Product Overview] ThermoFuse varistors

Compact overvoltage protection with an integrated fuse

TDK Corporation (TSE:6762) has extended its EPCOS ThermoFuse™ family of fuse protected varistors with the new compact NT14 and NT20 series. The new ThermoFuse components feature a footprint that fits into existing circuit board layouts.

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How to Use NTC Thermistors for Inrush Current Limiting
Applications & Cases
Sep. 2018
[Application Note] NTC Inrush Current Limiters

How to Use NTC Thermistors for Inrush Current Limiting

TDK has an extensive lineup of inrush current limiting NTC thermistors available. This article describes various example applications of these products, used for ICL (inrush current limiting) purposes to easily and effectively suppress inrush current.
When power is first applied to electronic devices such as switching power supplies and inverters, an instantaneous current with an abnormally high peak will flow through them.
This is known as “inrush current” and if not addressed, can lead to problems such as semiconductor element failure or reduced service life of smoothing capacitors. However, our inrush current limiting NTC thermistors can provide protection against this phenomenon to prevent such undesirable effects.

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The Optimal Applications for Chip Varistors for ESD Countermeasures
Applications & Cases
Aug. 2018
[Application Note] PTC Inrush Current Limiters

How to use PTC thermistors as current protection

One of the properties of PTC thermistors is that when an excessively large current flows, they generate heat by themselves and become highly resistive. With this property, they are used as overcurrent protection devices. This article describes applications for inrush current limiting, overcurrent protection and telecom application.

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The Optimal Applications for Chip Varistors for ESD Countermeasures
Applications & Cases
Aug. 2018
[Application Note] PTC Limit Temperature Sensors (Protection Device)

How to use PTC limit temperature sensors

PTC thermistors have the property that their resistance rises significantly when a certain temperature is exceeded. This property makes them suitable for use as temperature protection devices that detect defined high temperatures to protect circuits from overheating. TDK offers various types of PTC limit temperature sensors and motor protection sensors that incorporate PTC thermistors and serve as temperature protection devices. This article describes typical applications of such sensors.

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disk-varistor
Applications & Cases
Jul. 2018
[Application Note] Leaded Disk Varistors

How to Use ESD/surge Protection Devices : Disk Varistors

Varistors can be used as suppressors to protect devices and circuits from transient abnormal voltages including an ESD (electrostatic discharge) and a lightning surge.
For protection from a relatively large surge current (100A to 25kA), leaded disk varistors and SMD disk varistors are suitable. For protection from a larger surge current (approximately 25kA or more), block varistors, and strap varistors are suitable.
This article describes surge protection device applications for LED lighting system, inductive loads such as motors, motor with an electromagnetic brake, SSR (solid-state relay), load dump and field decay, joint boxes and power conditioners of solar power generation systems, important devices using a lightning transformer, and high-energy surge in industrial devices.

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EDLC
Applications & Cases
May. 2018
[Application Note] Chip Varistors / Ceramic Transient Voltage Suppressors

How to Use ESD/surge Protection Devices : SMD Varistors

SMD or chip varistors are voltage-dependent resistors based on ceramic multilayer technology. They are widely used to protect electronic circuits in consumer devices and telecom, industrial and automotive applications against transient overvoltages, such as electrostatic discharges (ESD) and surge transients.

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The Optimal Applications for Chip Varistors for ESD Countermeasures
Applications & Cases
May. 2018
[Application Note] Chip Varistors / Ceramic Transient Voltage Suppressors

The Optimal Applications for Chip Varistors for ESD Countermeasures

Chip varistors have both surge absorption capabilities and noise suppressing effects.
See the adaptive application fields of various components for ESD countermeasures as well as the optimal application fields of TDK’s chip varistors / ceramic transient voltage suppressors, CeraDiodes, and multilayer chip protectors.

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EDLC
Applications & Cases
Apr. 2018
[Application Note] Chip Varistors / Ceramic Transient Voltage Suppressors

Chip Varistors That Excel in Resisting Repeated Surges

TDK’s chip varistors in the AVR series, which are made with our own materials, feature high resistance to repeated surges. Products that substitute Zener diodes in compact devices such as solenoid valves and stepping motors, which are rapidly and frequently turned on and off, are also available.

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