All subcategories More about Film Capacitors

Würth Elektronik Capacitors

Big Portfolio available ex stock

Würth Elektronik has extended its capacitor portfolio. You will find an overview of our current technologies available ex stock in the graph. More details (e.g. series, characteristics, features, applications, etc.) about each product family can be found in the flyer or for example below. In our flyer you will also find information about our services.

Capacitor Portfolio Flyer

Available Series

Series WCAP-FTBP

Type: General Purpose
Boxed Type Metallized Polypropylene
Capacitance: 33 nF – 6.8 µF
Voltage: 160 – 630 V (DC)
Pitch: 7.5 – 27.5 mm

Series WCAP-FTBE

Type: General Purpose
Boxed Type Metallized Polyester
Capacitance: 10 nF – 6.8 µF
Voltage: 100 – 1000 V (DC)
Pitch: 7.5 – 37.5 mm

Series WCAP-FTX2

Type: X2-Capacitors
Safety Class: X2
Capacitance: 5.6 nF – 6.8 µF
Voltage: 275 V (AC)
Pitch: 7.5 – 37.5 mm

Series WCAP-FTXX

Type: X2-Capacitors
Safety Class: X2
Capacitance: 5.6 nF – 6.8 µF
Voltage: 310 V (AC)
Pitch: 7.5 – 37.5 mm

Series WCAP-FTXH

Type: X2-Capacitors THB
Safety Class: X2
Capacitance: 33 nF – 10 µF
Voltage: 310 V (AC)
Pitch: 15 – 37.5 mm

Series WCAP-FTDB

Type: DC Link
Capacitance: 1 – 75 µF
Voltage: 500 – 1200 V (DC)
Pitch: 27.5 – 52.5 mm

Characteristics

Film capacitors have a good current carrying capacity and are not dependent on voltage, such as MLCCs with DC bias behavior. The ESR value is low, which can be a significant factor in DC link applications compared to electrolytic capacitors, for example. In addition, film capacitors have a good longevity due to their self-healing properties.

Inner Structure

The picture shows the internal structure of our film capacitors using our WCAP-FTX2 (X2-Capacitors) series as an example. Film capacitors consist of a wound metalized plastic film. The pins are attached to this winding and then sealed in a plastic box using epoxy resin.

Example Applications

Measurements

Redexpert

With the help of REDEXPERT you will find the right capacitor based on your technical requirements. The tool supports, for example, with measured values for capacitance, impedance, ESR and dissipation factor (DF). The ability to compare individual components with each other in terms of measured values enables convenient component selection.

REDEXPERT

Webinar

Introduction to the capacitor technologies and how to use them

Capacitors make up two thirds of all electronic components and there is a huge diversity of technologies which can overwhelm young engineers. All capacitors store electrical energy in the electrical field created in a dielectric material and they are used for very diverse applications like voltage stability and filtering. How that works differs between tiny MLCCs and huge electrolytic cells, from pF ratings up to the hundreds of Farads in supercapacitors. In this presentation, we introduce different capacitor solutions taking into account the advantages and disadvantages and with a focus on the final application.

Webinar: Introduction to the capacitor technologies and how to use them

Applications Notes, Documents and Videos

Application Note ANP109: Impedance Spectra of Different Capacitor Technologies

Impedance and capacitance spectra are common representations of frequency dependent electrical properties of capacitors. The interpretation of such spectra provides a wide range of electrochemical, physical and technical relevant information and need to be separated from the ever-present measurement artifacts as well as parasitic effects.

All Capacitors are “Audio Capacitors"

There is an ongoing discussion within the audio engineering community about the sound quality of amplifiers concerning the audibility of signal distortions. Apparently, capacitors used for coupling and decoupling signals are suspected to be the source or at least a contributor to highfrequency distortions that influence the hearing impression.

Webinar “DC Link Capacitors: Specifications and Applications”

In our webinar you will find more information regarding the specification and application of DC Link Capacitors. The following content is explained in more detail:

DC link capacitors in general
Applications of DC Link Capacitors
Comparison of Aluminum Electrolytic Capacitors and DC Link Film Capacitors using a concrete example
Interpretation of the datasheet values
Influences on the expected lifetime

Do you have specific questions about your circuit? We are happy to advise you personally. Please contact your sales representative or write us via our chat.

Learn more

Webinar "The Effects of Harsh Environmental Conditions on Film Capacitors"

Humidity and temperature have always been critical for capacitors. Depending on the application, a wide variety of environmental conditions can occur. The location of use also determines the resulting humidity and temperature. An application in subtropical countries has a different demand on the components than the application in countries with more moderate climatic conditions. What can be done to meet such requirements?