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Passive Components Knowledge Blog

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DC/DC Converter Handbook

This section is based on Würth Elektronik‘s “DC/DC Converter Handbook” The handbook printouts can be ordered from WE website here. Published under permission and courtesy of Würth Elektronik

DC-DC Converter Basic Characteristics and Formulas

Input filters for DC/DC converters

Selection of Storage Inductors for DC/DC Converters

Selection of Capacitors for DC/DC Converters

Buck Converter Design and Calculation

SEPIC Converter Design and Calculation

Boost Converter Design and Calculation

Flyback Converter Design and Calculation

Fly-Buck Converter Explained and Comparison to Flyback

Popular Application Articles

Ripple Current and its Effects on the Performance of Capacitors

Why Low ESR Matters in Capacitor Design

Capacitor Selection for Coupling and Decoupling Applications

How to Choose the Right Inductor for DC-DC Buck Applications

How to Design an Inductor

Filter Poles and Zeros Explained

Guide to Snubber Capacitors

Filter Q Factor Explained

Flying Capacitors Explained

Introduction to Power Factor Correction PFC Capacitors and Circuits

RC Snubber Design for SMPS Protection

Over-Voltage and Over-Current Protection Explained

What Electronics Engineer Needs to Know About Passive Low Pass Filters

Modular AC line EMI filters explained

How to Calculate Supercapacitors for Energy Back Up Applications

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Capacitor Basics

What is a Capacitor ?

Capacitor Symbols

Capacitance and its Calculation, Dielectric, Dipoles and Dielectric Absorption

Dielectric Constant and its Effects on the Properties of a Capacitor

DCL Leakage Current Characteristics of Capacitors

Insulation Resistance, DCL Leakage Current and Breakdown Voltage

Capacitor Losses (ESR, IMP, DF, Q), Series or Parallel Eq. Circuit ?

ESR Characteristics of Capacitors

Effects of ESL on Capacitor Performance

Capacitor Energy Content and Force

Capacitors Derating and Category Concepts

Capacitor Ripple Current, Transient and Surge Power Load Ratings

Ripple Current and its Effects on the Performance of Capacitors

Capacitor Technologies Overview

Electrostatic Capacitors

MLCC and Ceramic Capacitors

Film and Foil Organic Dielectric Capacitors

Silicon and Silicon Wafer Based Integrated Capacitors

Glass, MICA, Air and Vacuum Capacitors

Electrolytic Capacitors

Aluminum Electrolytic Capacitors

Tantalum and Niobium Capacitors

Supercapacitors

Variable Capacitors, Varactors and Trimmers

Selection of Capacitors for DC/DC Converters

Failure Analysis of Capacitors and Inductors

Supercapacitor Balancing Methods Comparison

Capacitor Charging Losses Explained

Popular Capacitor Posts

What is a Dielectric Constant and DF of Plastic Materials?

DCL Leakage Current Characteristics of Capacitors

MLCC and Ceramic Capacitors

Dielectric Constant and its Effects on the Properties of a Capacitor

Capacitor Losses (ESR, IMP, DF, Q), Series or Parallel Eq. Circuit ?

Capacitor Symbols

Capacitors Derating and Category Concepts

What is the Difference Between X8G, X8L and X8R Ceramic Capacitor Dielectrics?

The Basics & Benefits of Tantalum vs Ceramic Capacitors

Choosing Capacitors for Crossover Audio Circuits

MLCC Case Sizes Standards Explained

Snubber Capacitors Functionality and Selection Guide

Shelf Life and Storage of Capacitors

Film and Foil Organic Dielectric Capacitors

How to Read a Capacitor Data Sheet

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Capacitor Video & Webinars

Capacitors

Water Cooled Polypropylene Capacitors

In this video prof. Sam Ben-Yaakov explains the principles of water-cooled high-power polypropylene MKP film capacitors and demonstrates examples in...

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Input Capacitance and Input Charge of MOSFET Gates

DC BIAS Voltage Dependence of Ferroelectric Class 2 MLCC Multilayer Ceramic Capacitors

How to Implement Protection and Power Management ICs for Supercapacitors

Aging of Class II MLCC Ceramic Capacitors; Video Presentation

Simulation Model of MLCC Ceramic Capacitors

Interview with Phil Lessner, YAGEO CTO about Smoltek CNF-MIM and Capacitors Future

Capacitor Technology Fundamentals; WE Webinar

Safety Film Capacitors in Isolated Power Supplies

IEC Standard for Self-Heating Definition: Performance Rated Current

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Resistor Basics

What is a Resistor ?

Resistor Symbols

Resistivity, Thermal Resistance and TCR Temperature Coefficient

Voltage Coefficient of Resistance Explained

Resistors Pulse Load, Power and Voltage Derating

Resistor Voltage and Frequency Dependence

Resistors Noise and Corrosion

Resistor Types, Construction and Features

Wirewound Resistors

Thin Film, Foil, Metal Oxide, Thick Film and Carbon Resistors

MELF, SMD Resistors and Resistor Network

Potentiometers, Encoder, Rheostats and Trimmers

Non-Linear Resistors: Thermistors, Varistors, Memristors

Overcoming the Challenges of Using Sub-Milliohm SMD Current Sense Chip Resistors

Designing with High Voltage Resistors: 10 Top Tips for Success

Sulphur-Resistant Film Resistors

Popular Resistor Posts

Thin Film, Foil, Metal Oxide, Thick Film and Carbon Resistors

Resistor Symbols

Non-Linear Resistors: Thermistors, Varistors, Memristors

Resistivity, Thermal Resistance and TCR Temperature Coefficient

Resistor Voltage and Frequency Dependence

Resistors Pulse Load, Power and Voltage Derating

Diode RC Snubber Explained

Fusible Resistors vs Fuses Key Differences Explained

Resistor Types, Construction and Features

PTC Current Limiting Protection Device Design With LTspice

SMD Surface Mount Chip Resistor Selection Guide

Thermistor-Based Temperature Sensing System Explained

Potentiometers, Encoder, Rheostats and Trimmers

Wirewound Resistors

MELF, SMD Resistors and Resistor Network

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Resistor Video & Webinars

thermistor explained

Circuit Protection Devices

Thermistor Explained Videos

This thermistor videos by Murata explains basics of thermistor technologies in three video parts. This video explains the characteristics of...

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NTC Thermistors Modeling

Vishay Webinar: Components Selection for Solar Panel Systems

Understanding Basics of Current Sense Resistors

LTspice Simulation of a Spark-Gap Circuit Protection Surge Arrester

Printed Resistors in a High Performance PCB System

Thermistors LTSpice Simulation in Thermostat Temperature Control Applications

Resistors and Thermistors for EVs; Vishay Webinar

Resistors for EVs and Automotive

Analogue Temperature Controller and Thermistor LTSpice Simulation Video

Diode RC Snubber Explained

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Inductor Basics

What is an Inductor ?

Inductor and Transformer Symbols

Magnetism, Ampère’s Law and Magnetic Fields Strength

Magnetic Induction, Magnetic Flux and Faraday’s Law

Core Materials, Permeability and Their Losses

Inductance, Impedance and Losses

Solenoids and Transformers

Understanding Inductors With Gapped Cores

Toroidal Inductors, Current Compensated Chokes, Common Mode Chokes and Beads

Transformer Calculation, Losses and Applications

SMD Inductors

Selection of Storage Inductors for DC/DC Converters

Storage Chokes and Power Inductors

Filters and RF Inductors

Failure Analysis of Capacitors and Inductors

Introduction to RFID Technology

Transformer Topologies in Power Converters

Transformer Testing, Parasitic Inductors/Capacitance & Lab traps

Inductance, AC Inductors and DC Inductors Explained in Video

Inductor Saturation Current Explained in Video

Skin and Proximity Losses as Key Impact Factors of Transformer and Inductor Winding Losses

High-Frequency Planar Magnetics

Understanding Flyback Transformer

Magnetic Core Losses and its Consequences

How Transformer Works

Current Sense Transformers for Switched-mode Power Supplies

How to Design LLC Transformer

Rogowski Coil Current Sensor Explained

Popular Inductor & Transformer Posts

Inductors and RF Chokes Basics

Core Materials, Permeability and Their Losses

Transformer Calculation, Losses and Applications

Equivalent Circuits and Simulation Models – Circuit Types

Solenoids, Contactors and Electromechanical Relays Explained

SMD Inductors

Inductance, Impedance and Losses

Linear Variable Differential Transformers LVDTs Explained

A Guide to Understanding Common Mode Choke

Failure Analysis of Capacitors and Inductors

TDK Explains Soft Termination on Capacitors, Inductors, and Chip Beads for Automotive

How to Use a Ferrite Bead in Your Design to Reduce EMI

Physical Transformer Modelling in LTSpice

High Frequency Helmholtz Coils Generates Magnetic Field

Automotive LED Lighting Driver Explained

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Inductor Video & Webinars

Inductors

Rogowski Coil Current Sensor Explained

In this video prof. Sam Ben-Yaakov explains the principles of Rogowski coil current sensors, its advantages and disadvantages.

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How to Design LLC Transformer

EV Wireless Charging Insight

How to Improve Efficiency of Back Converter at Low Power Using Controlled Inductor.

Aging of Molded Inductors; WE video

Potential Benefits and Limitations of Amorphous Core for APFC inductors

How Transformer Works

How to Fix Power Supply EMC Issues

Addressing EMI of Common Mode Chokes

Flyback Converter Power Conversion Explained

Impact of DC Bias to SMT EMI Suppression Ferrites

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Filter Basics

Input filters for DC/DC converters

What Electronics Engineer Needs to Know About Passive Low Pass Filters

An Introduction to Insertion Loss and Filter Capacitor Performance

Introduction to EMI Filtering

How to Pass Conducted Emissions Using Line Filters; WE Webinar

Basic Filter Circuits Explained

EMC Filters Explained – from Component to Design; WE Webinar

Five Key Filter Specifications

Filter Q Factor Explained

Filter Bandwidth Explained

Ceramic Coaxial Resonator Filters Basics

Filter Poles and Zeros Explained

Lumped Element L-C Filters Design and Characteristics

What Filter S-Parameters Are Good For

Cavity Resonator Filters Basics

How Microstrip Filters Work

What is X2Y Bypass Capacitor and What is it Good For?

Filter Shape Factor and Selectivity

AC Line Filter Calculation, Design and LT Spice Simulation

Improving Common Mode Noise Reduction while Decreasing BOM

Popular Filter Posts

Waveguides and Transmission Lines Explained

Feedthrough Capacitors Technology and Applications

REDEXPERT EMI Filter Designer: The behavior of the filter is simulated; Image source: Würth Elektronik

Würth Elektronik Add Free EMI Filter Design Simulation Tool to REDEXPERT

An Introduction to Insertion Loss and Filter Capacitor Performance

Decoupling and Filtering Capacitors Guideline

Filter Bandwidth Explained

What Filter S-Parameters Are Good For

Ceramic Feedthrough Filters Explained

EMI Filter Cost Effective Solution for Brush DC Motor EMC Requirements

Active vs Passive EMI filtering

AC Line Filters and Insertion Loss Explained

EMI Filters Selection Guide

Basic Filter Circuits Explained

EMC CL and LC Filters Comparison

EMC Filtering of a USB 2.0 Port

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Filter Video & Webinars

EMI/EMC

How to Fix Power Supply EMC Issues

This video by Robert Feranec hosts Thomas Eichstetter to go step by step measuring and fixing EMC problem of a...

Read more

AC Line Filter Calculation, Design and LT Spice Simulation

Power Flow Considerations in Power Filters

BJT Filters and Capacitance Multipliers

EMI Filter Online Calculation and Selection Guideline with REDEXPERT Designer; WE Webinar

Addressing EMC Issues; Texas Instruments and Würth Elektronik Webinar

Filter Calculation and Selection with REDEXPERT EMI Filter Designer; WE Webinar

How to Design EMC Efficient Power Converter; WE Webinar

How to Address EMC Issues: Efficiently Connect Filter Components

EMC Filters Explained – from Component to Design; WE Webinar

How to Pass Conducted Emissions Using Line Filters; WE Webinar

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Crystal & Oscillator Basics

Crystals and Oscillators Explained; WE Webinar

Platform Structure Clock Oscillators

Practical Measurement of Crystal Circuits

Oscillators Integration, Selection Guide and Design In

How Clock Oscillator Works

How Capacitor Selection Affects Crystal Accuracy

Popular Crystal & Oscillator Posts

How Capacitor Selection Affects Crystal Accuracy

Properties and Characteristics of Crystal Units

High-Precision TCXOs for 5G Base Stations

Practical Measurement of Crystal Circuits

Quartz Crystals and Oscillators Explained; Würth Elektronik Webinar

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Circuit Protection Components Basics

Over-Voltage and Over-Current Protection Explained

Circuit Protection Component Types

ESD Electrostatic Discharge Protection by TVS Diode

Overvoltage Protection Selection Guidelines: TVS Diodes, MOVs, and ESD MOV Varistors

How Fuses and Circuit Breakers Works Based on Critical I2t

Primary Fuse Protection Against Overvoltage Events

Varistors Basics

Varistor Selection Guideline

MLV Varistors vs TVS Diode Benefits in Automotive Applications

How to Use Varistors as ESD/Surge Protection Devices

Chip Varistors Applications for ESD Countermeasures

Thermistors Basics

NTC Thermistors Modeling

How to Use NTC Thermistors for Inrush Current Limiting

PTC Thermistors Applications

Thermistor-Based Temperature Sensing System Explained

Popular Circuit Protection Posts

NTC/PTC Thermistors LTSpice Simulation; Vishay Video Part I

How to Use NTC Thermistors for Inrush Current Limiting

MLV Varistors vs TVS Diode Benefits in Automotive Applications

How to Use Varistors as ESD/Surge Protection Devices

Materials Prices for Passives on Rise, Supply Chain Update for December 2022

Thermistor-Based Temperature Sensing System Optimization and Evaluation

LTspice Simulation of a Spark-Gap Circuit Protection Surge Arrester

Varistor Selection Guideline

Resistor Technology Selection Guide

PTC Thermistors Applications

Combined current control by NTC and PTC thermistors

Primary Fuse Protection Against Overvoltage Events

Murata 1608 PTC thermistor heater – the smallest “Micro-heater”class in the industry

Multilayer varistors in automotive circuit protection

Thermistors Basics

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PCB Inter-Connect Knowledge Blog

High Density Interconnect Support PCB Miniaturization

Rigid Flexible PCBs Construction

PCB Shielding, A Practical Approach

Rigid Flexible PCB Production Internal Flex Layers

High Density Interconnect PCBs

Thermal Management of High Performance PCB System

PCBs Explained for Beginners

BASIC PCB Design Rules – Layout

PCB Via Design Selection; Plugging-Filling-Tenting

Microwave Multi Line Connectors Mounting and Handling Precautions

Antenna Matching on PCB

How Does Your PCB Layout Influence the Costs in PCB Manufacturing?

Correlation between Calculation & Practice for Simple TOP-to-BOTTOM PCB Heat Dissipation

PCBs Mini, Micro and Microvia; Würth Elektronik Webinar

Miniaturization of PCBs with Embedded Active and Passive Components; WE Webinar

How to Process Through-Hole Components by Reflow Assembly

Basic PCB Technology Overview

RF PCB Connector Impedance Matching and Dynamics

Designing and Testing HDI PCBs for Harsh Environments

EMC with Electromechanical Inter-Connections

EMI Shielding Challenges

Die and Wire PCB Bonding Explained

Passive Components Mounting Tips & Tricks

Soldering, PCB Handling and Rework Component Guidelines

PCB Board Component Layout and Handling

Common Component Soldering Process Issues

Board Mounting Techniques

Popular PCB Inter-Connect Posts

PCB Interconnection

Die and Wire PCB Bonding Explained

Applications e-Blog

PCB Board Component Layout and Handling

Applications e-Blog

Soldering, PCB Handling and Rework Component Guidelines

Applications e-Blog

Board Mounting Techniques

Applications e-Blog

Common Component Soldering Process Issues

RF PCB Connector Impedance Matching and Dynamics

Basic PCB Technology Overview

Designing and Testing HDI PCBs for Harsh Environments

EMI Shielding Challenges

EMC with Electromechanical Inter-Connections

Board-to-Board Connectors

PCB Shielding, A Practical Approach

BASIC PCB Design Rules – Layout

PCB Via Design Selection; Plugging-Filling-Tenting

PCB interconnect news

High Density Interconnect Support PCB Miniaturization

Rigid Flexible PCBs Construction

Rigid Flexible PCB Production Internal Flex Layers

PCBs Explained for Beginners

Microwave Multi Line Connectors Mounting and Handling Precautions

Antenna Matching on PCB

How Does Your PCB Layout Influence the Costs in PCB Manufacturing?

Correlation between Calculation & Practice for Simple TOP-to-BOTTOM PCB Heat Dissipation

Sam Ben-Yaakov Video Learning

Inductors

Rogowski Coil Current Sensor Explained

Capacitors

Water Cooled Polypropylene Capacitors

Inductors

EV Wireless Charging Insight

Capacitors

Input Capacitance and Input Charge of MOSFET Gates

Applications

Fly-Buck Converter Explained and Comparison to Flyback

Applications e-Blog

High Voltage Flyback Capacitor Chargers

EMI/EMC

EMI Explanation

Inductors

How to Improve Efficiency of Back Converter at Low Power Using Controlled Inductor.

Capacitors

Aging of Class II MLCC Ceramic Capacitors; Video Presentation

Inductors

Potential Benefits and Limitations of Amorphous Core for APFC inductors

Inductors

How Transformer Works

Capacitors

Simulation Model of MLCC Ceramic Capacitors

Passive Components Blog

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