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- EPCOS products are part of the product portfolio of TDK Corporation, one of the leading manufacturers of electronic components, modules, systems and devices. The broad portfolio of passive electronic components includes capacitors, ferrites, inductors, and high-frequency components such as surface acoustic wave (SAW) filter products, piezo and protection components, and sensors. These components are marketed under the product brands TDK and EPCOS.

Circuit Protectors

Circuit Protection Thumbnail

EPCOS offers one of the broadest product lines in the industry delivering high energy transient protection, ESD protection and thermal management. Learn More

P27 NTC Inrush Current Limiters

Image of EPCOS P27 Series ICLs

TDK presents the P27 series of EPCOS NTC ICLs with a nominal disk diameter of 27 mm and lead spacing of 7.5 mm. Learn More

T Series ThermoFuse™ Varistors

Image of EPCOS T Series ThermoFuse Varistors

EPCOS' T series of ThermoFuse varistors is a housed component, consisting of a disk varistor in series with a thermally coupled fuse. Learn More

Product Listing View All

Featured Products

Image of Epcos' Humidity Resistant X2 EMI Capacitors

Humidity-Resistant X2 EMI Capacitors

TDK Corporation presents their series of EPCOS X2 EMI suppression capacitors with stable capacitance values, even under extremely humid conditions. Learn More

Image of Epcos' High Current Chokes

High Current Chokes

Compact electrical and electronic equipment primarily generates common-mode interference. In order to meet the safety requirements (keeping within the leakage current limits), chokes with a high asymmetrically effective inductance must be used. Learn More

Newest Products View All (49)

Image of TDK/EPCOS CeraLink Capacitors

CeraLink Capacitors

In contrast to conventional ceramic capacitors, the CeraLink capacitors' maximum capacitance at application voltage increases proportionately to the share of the ripple voltage.

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Image of EPCOS Chassis Mount and Inverter/Drive Filters

Chassis Mount and Inverter Drive Filters

EPCOS chassis mount and inverter/drive filters by TDK Corporation offer a large variety of high quality, cost effective, multi-phase filters designed to reduce the effects of EMI and (or) RFI on electrical equipment.

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Image of TDK/EPCOS Ultra-Robust, Industrial-Grade X2 Capacitors

Ultra-Robust, Industrial-Grade X2 Capacitors

TDK and EPCOS offer their ultra-robust, industrial-grade X2 capacitors for applications such as X2 class for interference suppression and "across the line."

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Image of TDK Corporation/EPCOS ERU16 Series SMT Power Inductors

ERU16 Series SMT Power Inductors

TDK's EPCOS ERU16 series SMT power inductors are energy storage chokes for DC-DC converters, VRM modules, POL converters, and solar converters.

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Image of Epcos Inc's B59219J130A20 PTC Inrush Current Limiters

B59219J130A20 PTC Inrush Current Limiters

EPCOS introduces their B59219J130A20 PTC inrush current limiters that are designed to replace high-power fixed resistors and are ideal for electric vehicle (EV), or hybrid electric vehicle (HEV) applications.

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Image of TDK/EPCOS B82451L Series Transponder Coils

B82451L Series Transponder Coils

TDK its series of EPCOS z-axis Z transponder coils for passive entry, passive start (PEPS) car access systems with dimensions of 7.7 mm x 7.4 mm x 2.65 mm.

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Tools & Support

Image of EPCOS X2 EMI Suppression Capacitors

Film Capacitor Service Life Tool

The film capacitor calculation tool offers a smart search option. Users can enter the key load parameters of their application to find suitable film cap product types. By double-clicking a capacitor in the list it is easy to start the calculation for this specific type. Learn More

Image of EPCOS' Design Tools Data

NTC R/T Calculation Tool

This NTC thermistor web based tool allows for the calculation of the resistance/temperature characteristics. R/T characteristics can be individually calculated and manipulated by adjusting the temperature range and the resistance tolerance and selecting the desired temperature intervals. The results can be output as PDF files or exported in spreadsheet-compatible csv format. Learn More

Image of EPCOS Design Tools Film Caps

Snubber Capacitor Finder

Finding the right snubber capacitor is easy using this cap finder. Just enter the manufacturer’s IGBT part number to obtain a search result of all suitable EPCOS snubber capacitors. By selecting rated voltage and/or capacitance as well as film/foil arrangement the number of capacitors in the search result can be reduced in a simple way. Learn More

Image of EPCOS Mode Power Supply

Switch Mode Power Supply

The range of products offered by EPCOS for switch mode power supply applications includes common mode filters, ferrite filters, ferrite cores in E, I, U, and ring core forms, transformers, X/Y filter capacitors, thermistors, temperature sensors, DC Link capacitors in both film and aluminum. Learn More

Image of EPCOS LED Lighting

LED Lighting

Energy saving lamps and LED lighting systems need about 80% less energy than conventional technologies. EPCOS offers the key components necessary to support electronic ballasts and power supplies for LED lighting systems including inductors, capacitors and protection devices. Learn More

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Products for Industrial Applications

EPCOS and TDK passive components offers a broad range of products for all industrial applications including capacitors. Ferrites, inductors, filters, circuit protections, sensors and high frequency RF and SAW devices. Learn More

Product Training Modules View All (20)

Hybrid Electric Vehicle Protection

Hybrid Electric Vehicle Protection

Duration: 20 minutes

Information of the battery charging and discharging circuit architectures within the hybrid electric and electric vehicle applications.


SMT Current Transformer Series

Duration: 5 minutes

Overview of the EPCOS EPC7 and EPC10 series of surface mount current sense transformers.

SMT Push-Pull Transformer Series

SMT Push-Pull Transformer Series

Duration: 5 minutes

The series is designed to be used at a typical switching frequency of 250kHz and offers different turns ratios to define the output voltages.

EPCOS’ High Energy Transient Protection

Circuit Protection Offering

Duration: 5 minutes

Highlight the features and benefits of high energy transient protection, ESD protection, and thermal management products

Featured Videos View All (11)

TDK EPCOS CeraLink Capacitors | Digi-Key Daily

TDK Corporation offers EPCOS' CeraLink capacitors for snubber and DC links in SiC and GaN semiconductors.

TDK EPCOS X2 EMI Suppression Capacitors | Digi-Key Daily

TDK Corporation offers its EPCOS X2 EMI suppression capacitors, designed especially to perform in harsh environments and humid conditions.

Aluminum Electrolytic Capacitors

EPCOS ALU capacitors provide a unique value in high storage and low impedance for DC link in power electronics.

NTC Thermistors for Accurate Temperature Sensing

EPCOS temperature sensors provide a high degree of precise management, sensitivity and reliability.

Additional Content

Related Product Brands

Industrial Electronics

Consumer Electronics


Film Capacitors

Aluminum Electrolytic Capacitors

Smart Meters



Piezo and Protection Devices

Surge Arrestors


SAW Components

More about EPCOS

Press Releases

Manufacturer Web site