• Latest
  • Trending
  • All
  • Capacitors
  • Resistors
  • Inductors
  • Filters
  • Fuses
  • Non-linear Passives
  • Applications
  • Integrated Passives
  • Oscillators
  • Passive Sensors
  • New Technologies
  • Aerospace & Defence
  • Automotive
  • Industrial
  • Market & Supply Chain
  • Medical
  • RF & Microwave
  • Telecommunication

Selection Guide for EMI Suppression Polypropylene Film Capacitors KEMET Tech Note

26.11.2021

Examining the Influence of ESR and Ripple Current on Selecting the Suitable Capacitor

21.3.2023

SABIC Validates its 150°C Film Foil to Enable Adoption of Film Capacitors in SIC Power Modules

20.3.2023

Outlook of Passive Electronic Components Market for Oil & Gas Electronics in 2023

20.3.2023

Flying Capacitors Explained

17.3.2023

TDK Introduces Compact High-Current Chokes for Automotive and Industrial Applications

16.3.2023

ECIA NA February 2023 Electronic Components Sales Confirms Growth Trend

16.3.2023
  • Home
  • Privacy Policy
  • EPCI Membership & Advertisement
  • About
No Result
View All Result
NEWSLETTER
Passive Components Blog
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • Market & Supply Chain
    • Medical
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors
    • Resistors
    • RF & Microwave
    • Telecommunication

    Examining the Influence of ESR and Ripple Current on Selecting the Suitable Capacitor

    SABIC Validates its 150°C Film Foil to Enable Adoption of Film Capacitors in SIC Power Modules

    Outlook of Passive Electronic Components Market for Oil & Gas Electronics in 2023

    Flying Capacitors Explained

    TDK Introduces Compact High-Current Chokes for Automotive and Industrial Applications

    ECIA NA February 2023 Electronic Components Sales Confirms Growth Trend

    Investigating Modeling Techniques of Class II Ceramic Capacitors Losses for High Voltage and Current Applications

    TDK Extends Range of Industrial Single Pair Ethernet (SPE) Inductors

    Premo Unveils New series of 11kW 3-Phase On-Board Charger Transformers

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos
    • Sensors

    Investigating Modeling Techniques of Class II Ceramic Capacitors Losses for High Voltage and Current Applications

    Understanding Basics of Current Sense Resistors

    What Decoupling Capacitor Value To Use And Where To Place Them

    How to Measure Rated Current on Power Inductors

    LTspice Simulation of a Spark-Gap Circuit Protection Surge Arrester

    Approximate Inductor Design Using Two Alternative Cores

    1kW Phase Shift Full Bridge Converter Design and Simulation

    Multiphase Buck Trans-Inductor Voltage Regulator (TLVR) Explained

    Smart Power Distribution Unit Architecture and Inductor Losses

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Preferred Suppliers
    • Who is Who
  • Events
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • Market & Supply Chain
    • Medical
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors
    • Resistors
    • RF & Microwave
    • Telecommunication

    Examining the Influence of ESR and Ripple Current on Selecting the Suitable Capacitor

    SABIC Validates its 150°C Film Foil to Enable Adoption of Film Capacitors in SIC Power Modules

    Outlook of Passive Electronic Components Market for Oil & Gas Electronics in 2023

    Flying Capacitors Explained

    TDK Introduces Compact High-Current Chokes for Automotive and Industrial Applications

    ECIA NA February 2023 Electronic Components Sales Confirms Growth Trend

    Investigating Modeling Techniques of Class II Ceramic Capacitors Losses for High Voltage and Current Applications

    TDK Extends Range of Industrial Single Pair Ethernet (SPE) Inductors

    Premo Unveils New series of 11kW 3-Phase On-Board Charger Transformers

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos
    • Sensors

    Investigating Modeling Techniques of Class II Ceramic Capacitors Losses for High Voltage and Current Applications

    Understanding Basics of Current Sense Resistors

    What Decoupling Capacitor Value To Use And Where To Place Them

    How to Measure Rated Current on Power Inductors

    LTspice Simulation of a Spark-Gap Circuit Protection Surge Arrester

    Approximate Inductor Design Using Two Alternative Cores

    1kW Phase Shift Full Bridge Converter Design and Simulation

    Multiphase Buck Trans-Inductor Voltage Regulator (TLVR) Explained

    Smart Power Distribution Unit Architecture and Inductor Losses

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Preferred Suppliers
    • Who is Who
  • Events
No Result
View All Result
Passive Components Blog
No Result
View All Result

Selection Guide for EMI Suppression Polypropylene Film Capacitors KEMET Tech Note

26.11.2021
Reading Time: 5 mins read
0 0
0
SHARES
340
VIEWS

Power electronic designers are continually trying to decrease overall design size by increasing conversion efficiency. One way they do that is by using Wide Bandgap (WBG) semiconductor devices.  WBG devices can operate at higher switching frequencies and higher temperatures than traditional semiconductors. Their use allows reducing the size of passive components, bringing an overall more compact design and increasing power density per volume of the converters, thus making miniaturization mandatory. WBG devices also operate with extremely high voltage slew rates producing more high-frequency emissions.

Meeting the electromagnetic compliance (EMC) requirements of regulatory agencies becomes more and more complex for designs using WBG semiconductors, and electromagnetic interference (EMI) suppression capacitors play a crucial role. They must be miniaturized, to realize the benefits of smaller overall designs, but at the same time must meet high-reliability requirements under critical electrical and environmental conditions.

RelatedPosts

Examining the Influence of ESR and Ripple Current on Selecting the Suitable Capacitor

KEMET Extends 450V Rectangular Aluminum Capacitors to 105°C Temperature Range

KEMET Releases 260C High Temperature C0G MLCC Capacitors

What Are EMI Suppression Capacitors?

EMI suppression capacitors are a specialized subset of commercially available capacitors that are designed for filtering electrical noise out of the power being supplied to the circuit. They do this by reducing the input impedance of the system for higher frequency noise.

Figure 1: Example Application Circuit with EMI Suppression Capacitors
Source: https://passive-components.eu/addressing-design-challenges-in-emi-suppression-capacitors/

EMI suppression capacitors are often used to suppress noise on AC mains power lines. They are sometimes connected in ‘X’ configuration, or “between the lines”, as in C1 and C2 in the figure above. Other times, they are connected in the ‘Y’ configuration, or “line to ground”, as in C3 and C4. If a capacitor fails while in an ‘X’ configuration, there is a risk of fire. But if a capacitor fails while in a ‘Y’ configuration, there is instead a risk of electrical shock. Because of the danger of these failure modes, these capacitors are designed to fail “safe” to prevent fire or shock. For this reason, many EMI capacitors are also called safety capacitors.

How Are EMI Capacitors Rated?

EMI capacitors are classified by their intended use (X or Y configuration), their rated operating voltage, and the peak impulse voltage they can safely withstand. The subclasses and associated ratings for these capacitors are shown in the figures below.

Figure 2: Class-X Subclass Ratings
Figure 3: Class-Y Subclass Ratings

Figure 2 and 3: Class-X and Class-Y Subclass Ratings Source: https://www.allaboutcircuits.com/technical-articles/safety-capacitor-class-x-and-class-y-capacitors/

What Are Harsh Environments?

Along with miniaturization, many designs need to operate in severe environmental conditions throughout their extended lifespan. Some examples include:

  • On-board chargers for electric and hybrid vehicles, expected to withstand higher temperatures and extreme thermal shock cycles
  • Miniaturized solar micro-inverters and smart energy meters with expected lifetimes of up to 25 years without servicing, in environments including potential high humidity factors
  • Smart utility meters, expected to operate outdoors, reliably, for many years or even decades

To meet the needs of these harsh environment applications, a well-accepted accelerated life test standard for active and passive components has been developed in the electronics industry – the Temperature-Humidity-Bias (THB) test. The THB test has been recognized as an IEC standard for EMI suppression film capacitors. Capacitor manufacturers must indicate the THB grade for their certified solutions.

The tables below show the different Temperature-Humidity-Bias (THB) testing conditions per IEC Standards. The higher the grade, the more robust the capacitor is in harsh environments and longer extended life can be expected.

Table 1: 60384-14 Am. 1 Ed.4 Fixed capacitors, .2 Humidity Robustness Grades
Table 2: Capacitance, Dissipation Factor, and Insulation Resistance Requirements

Polypropylene Film Capacitors’ Advantages

Figure 4. KEMET R53 polypropylene film capacitor

Polypropylene film capacitors (such as KEMET’s R53 series) typically offer wide capacitance range, AEC-Q200 automotive qualification in combination with long-life stability in harsh environmental conditions.

KEMET R53 series in addition offer compact size – its volume, on average, is 60% smaller than competitive X2 class capacitors, enabling a smaller PCB area, reduced weight, lower costs, and improved reliability.

Polypropylene film capacitors are well-suited for AC/DC converters in onboard chargers for xEVs, smart grid hardware, EMI filtering in Variable Frequency Drivers (VFDs), LED drivers, and high energy density applications such as capacitive power supplies.

The KEMET R53 X2 series polypropylene film EMI suppression capacitors exceed previous solutions and meet the IEC-60384-14 humidity robustness test with a Class IIIB classification. The R53 series achieves 1,000 hours during an accelerated life test under 85°C and 85% relative humidity at its rated AC (310 V) and DC (560 V) voltages.

Conclusion

Polypropylene film capacitors are among the best choice for EMI suppression applications in industrial and automotive applications thanks to its stability and long life at harsh conditions.

KEMET R53 series X2 capacitors can meet the highest THB class in a more miniaturized size than the competition. These key characteristics present significant advantages to designers in terms of both capability and space in the design. Additionally, the R53 AEC-Q200 qualification makes this series an ideal EMI suppression solution for automotive applications.

Source: KEMET

Related Posts

Capacitors

Examining the Influence of ESR and Ripple Current on Selecting the Suitable Capacitor

21.3.2023
46
Capacitors

SABIC Validates its 150°C Film Foil to Enable Adoption of Film Capacitors in SIC Power Modules

20.3.2023
15
Market & Supply Chain

Outlook of Passive Electronic Components Market for Oil & Gas Electronics in 2023

20.3.2023
15

Upcoming Events

Mar 19
March 19 - March 23

APEC 2023

Mar 22
14:00 - 15:00 CET

Parasitic Components in Power Converters – Fundamentals and Measurements Rohde & Schwarz Webinar

Apr 3
April 3 @ 12:00 - April 4 @ 14:00 CEST

Microelectronic Packaging Failure Modes and Analysis

View Calendar

Popular Posts

  • What is a Dielectric Constant of Plastic Materials ?

    4 shares
    Share 4 Tweet 0
  • Ripple Current and its Effects on the Performance of Capacitors

    3 shares
    Share 3 Tweet 0
  • Capacitor Selection for Coupling and Decoupling Applications

    28 shares
    Share 28 Tweet 0
  • Leakage Current Characteristics of Capacitors

    0 shares
    Share 0 Tweet 0
  • Understanding High-Precision Resistor Temperature Coefficient of Resistance

    0 shares
    Share 0 Tweet 0
  • How to Choose the Right Inductor for DC-DC Buck Applications

    0 shares
    Share 0 Tweet 0
  • Examining the Influence of ESR and Ripple Current on Selecting the Suitable Capacitor

    0 shares
    Share 0 Tweet 0
  • Why Low ESR Matters in Capacitor Design

    0 shares
    Share 0 Tweet 0

Newsletter Subscription

 

PCNS Call for Papers !

Archive

2022
2021
2020
2019
2018
2017

Symposium

Passive Components Networking Symposium

Passives e-Learning

Knowledge Blog

  • Home
  • Privacy Policy
  • EPCI Membership & Advertisement
  • About

© EPCI - Premium Passive Components Educational and Information Site

No Result
View All Result
  • Home
  • News
  • Video
  • Knowledge Blog
  • Preferred Suppliers
  • Events

© EPCI - Premium Passive Components Educational and Information Site

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
This website uses cookies. By continuing to use this website you are giving consent to cookies being used. Visit our Privacy and Cookie Policy.