Passive Components Blog
No Result
View All Result
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • electro-mechanical news
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • inter-connect news
    • Market & Supply Chain
    • Market Insights
    • Medical
    • Modelling and Simulation
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors News
    • Resistors
    • RF & Microwave
    • Telecommunication
    • Weekly Digest

    Bourns Unveils Metal Powder Core High Current Low DCR Shielded Power Inductor

    Influence of Tantalum Capacitor Pellets Size on Stability During Oxide Film Formation

    Modelithics Release Discrete Components Optimization Article for RF/Microwave Designers

    Samsung Extends Capacitance of MLCC 0805 X7T 250V to 100nF

    Samtec Releases 800-Position High-Performance Array Connectors  

    DigiKey Announces Back to School Giveaway to Empower Tomorrow’s Innovators

    Ripple Steering in Coupled Inductors: SEPIC Case

    TDK Releases Low Loss Thin-Film Inductors for AI Data Centers

    Samsung Releases Ultra–High-Capacitance 4.7uF 2.5V MLCC in 0201 for AI GPU

    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
    • Circuit Protection Video
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Inter-Connect Video
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos

    Ripple Steering in Coupled Inductors: SEPIC Case

    SEPIC Converter with Coupled and Uncoupled Inductors

    Coupled Inductors in SEPIC versus Flyback Converters

    Non-Linear MLCC Class II Capacitor Measurements Challenges

    Percolation Phenomenon and Reliability of Molded Power Inductors in DC/DC converters

    Root Causes and Effects of DC Bias and AC in Ceramic Capacitors

    How to Calculate the Output Capacitor for a Switching Power Supply

    Switched Capacitor Converter Explained

    Understanding Inductor Dot Markings and Their Application in LTspice

    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
    • Who is Who
  • Events
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Circuit Protection Devices
    • electro-mechanical news
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • inter-connect news
    • Market & Supply Chain
    • Market Insights
    • Medical
    • Modelling and Simulation
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors News
    • Resistors
    • RF & Microwave
    • Telecommunication
    • Weekly Digest

    Bourns Unveils Metal Powder Core High Current Low DCR Shielded Power Inductor

    Influence of Tantalum Capacitor Pellets Size on Stability During Oxide Film Formation

    Modelithics Release Discrete Components Optimization Article for RF/Microwave Designers

    Samsung Extends Capacitance of MLCC 0805 X7T 250V to 100nF

    Samtec Releases 800-Position High-Performance Array Connectors  

    DigiKey Announces Back to School Giveaway to Empower Tomorrow’s Innovators

    Ripple Steering in Coupled Inductors: SEPIC Case

    TDK Releases Low Loss Thin-Film Inductors for AI Data Centers

    Samsung Releases Ultra–High-Capacitance 4.7uF 2.5V MLCC in 0201 for AI GPU

    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
    • Circuit Protection Video
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Inter-Connect Video
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos

    Ripple Steering in Coupled Inductors: SEPIC Case

    SEPIC Converter with Coupled and Uncoupled Inductors

    Coupled Inductors in SEPIC versus Flyback Converters

    Non-Linear MLCC Class II Capacitor Measurements Challenges

    Percolation Phenomenon and Reliability of Molded Power Inductors in DC/DC converters

    Root Causes and Effects of DC Bias and AC in Ceramic Capacitors

    How to Calculate the Output Capacitor for a Switching Power Supply

    Switched Capacitor Converter Explained

    Understanding Inductor Dot Markings and Their Application in LTspice

    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
    • Who is Who
  • Events
No Result
View All Result
Passive Components Blog
No Result
View All Result

Enhancement of Tantalum Capacitors Reliability: Innovative Approach to Anode Production Control

30.7.2024
Reading Time: 5 mins read
A A

This article is essentially a summary of 18 publications of Dr. V. Azbel, Independent consultant on tantalum capacitors, in the field of enhancement of tantalum capacitors reliability.

Introduction

Modern methods of manufacturing tantalum capacitors require meticulous control at every stage of the technological process to ensure their reliability and longevity.

RelatedPosts

Influence of Tantalum Capacitor Pellets Size on Stability During Oxide Film Formation

Enhanced Process Control in Tantalum Capacitor Anode Manufacturing Reduces Cost and Improves Reliability

Enhancing Effectiveness of Tantalum Capacitor Anode Control

This article presents a new approach to structural control, proposed as an addition to existing methods, similar to the F-Tech technology. This approach significantly enhances the reliability of anodes by minimizing the risk of leakage current (DCL) failures. Notably, this approach is the first to utilize stress-strain curve characteristics specifically for controlling the technological process in tantalum capacitor production, a method previously unutilized in this context.

Methodology

Structural Control Sintered Pellet and Anode at Each Production Stage

A key aspect of the approach is the application of stress-strain curve characteristics to monitor particle distribution in the powder and the internal stresses. This method is widely used in powder metallurgy to assess powder quality and process stability by controlling the mechanical properties of the sintered pellet [1].

This confirms its effectiveness and potential for improving processes in the production of tantalum capacitors. Structural control permits minimizing defects and the risk of internal stresses arising during sintering and passivation, ensuring the stability and quality of the sintered pellet before formation [2],[3].

Assessment of Anode Aging Propensity

To evaluate the aging propensity of anodes, we propose a materials science-based approach, utilizing the difference in mechanical characteristics before and after temperature exposure. For the anode, this involves 450°C in air. This method predicts the durability and reliability of anodes under operational conditions, which is crucial for ensuring the stable performance of capacitors over time and has been experimentally confirmed [3].

Using the Anode Calculation Program for New Designs

In manufacturing an anode for a new design, we use our developed anode calculation program. This program allows the selection of optimal technological parameters for the anode given the capacitor design, ensuring the final product meets the required specifications [4].

Advantages of the Proposed Approach for Deoxidation Process Control

The proposed approach offers significant advantages for controlling the deoxidation process of tantalum-sintered pellets. According to the article ” Optimizing the Deoxidation Process of Tantalum Powders to Improve Electrical Performance of Anodes,” [5] effective deoxidation is crucial for achieving balanced microstructures and minimizing internal stresses.

By applying stress-strain curve analysis, we can accurately monitor and control the structural changes occurring during deoxidation. This method provides a more precise assessment of the internal stresses and structural integrity of the anode compared to traditional methods. Consequently, this leads to enhanced reliability and performance of the final product. Furthermore, the approach allows for real-time adjustments during the deoxidation process, ensuring consistent quality and reducing the risk of defects that could compromise the capacitor’s reliability.

Results and Discussion

Implementing the proposed structural control approach at each production stage significantly minimized internal stresses, thereby improving the quality and reliability of anodes [6].

The assessment of anode aging propensity showed that anodes produced by our method possess high stability and reliability. The anode calculation program effectively selected optimal parameters for various capacitor designs. This approach has received experimental confirmation in a series of my works [7].

Conclusion


The presented new approach to structural control, proposed as an addition to existing methods, significantly improves the quality and reliability of tantalum capacitors. Structural control at each production stage, assessing anode aging propensity, and using the anode calculation program ensure high product stability and longevity. This method can benefit manufacturers aiming to enhance their capacitors’ performance and reduce failure risks.

Reference

  1. J. KOVACIK Correlation between Young’s modulus and porosity in porous materials Journal of Materials Science letter s 18 (1999) 1007-1010
  2. V. Azbel Quality control sinter pellet an anode, Ta- capacitor, by Mechanical testing https://www.linkedin.com/pulse/quality-control-sinter-pellet-anode-ta-capacitor-mechanical-azbel/ and https://passive-components.eu/ensuring-quality-in-tantalum-capacitor-production-the-critical-role-of-anode-mechanical-screening/
  3. V. Azbel Tantalum Capacitors Reliability, Leakage Current Stability Prediction and Cost Reduction by Anode Characterization During Manufacturing Process; Vladimir Azbel; 3rd PCNS Passive Components Networking Symposium SEPTEMBER 2021, MILANO, ITALY; https://passive-components.eu/modelling-of-anode-overheating-risks-during-the-manufacture-of-tantalum-capacitors/
  4. V. Azbel Modeling of Anode Overheating Risks During the Manufacture of Tantalum Capacitors 2023 BLOG PASSIVE COMPONENTS 2024 https://passive-components.eu/modelling-of-anode-overheating-risks-during-the-manufacture-of-tantalum-capacitors/
  5. V. Azbel Optimizing the Deoxidation Process of Tantalum Powders to Improve Electrical Performance of Anodes https://www.linkedin.com/in/vladimir-azbel-319769106/recent-activity/all/2024 and https://passive-components.eu/optimizing-the-deoxidation-process-of-tantalum-powders-to-improve-electrical-performance-of-anodes/
  6. V. Azbel Innovative Quality Control to Improve the Reliability of Tantalum Capacitors BLOG PASSIVE COMPONENTS 2024, https://passive-components.eu/innovative-quality-control-to-improve-the-reliability-of-tantalum-capacitors/
  7. https://passive-components.eu/?s=Vladimir+Azbel

Related

Source: Vladimir Azbel

Recent Posts

Influence of Tantalum Capacitor Pellets Size on Stability During Oxide Film Formation

29.8.2025
9

Modelithics Release Discrete Components Optimization Article for RF/Microwave Designers

28.8.2025
7

Samsung Extends Capacitance of MLCC 0805 X7T 250V to 100nF

28.8.2025
11

Samsung Releases Ultra–High-Capacitance 4.7uF 2.5V MLCC in 0201 for AI GPU

27.8.2025
25

Non-Linear MLCC Class II Capacitor Measurements Challenges

19.8.2025
44

Researchers Demonstrated HfO Anti-Ferroelectric Flexible Capacitors

19.8.2025
19

High Voltage MLCCs Meeting the Growing Demand for Efficiency in Power Conversion

12.8.2025
164

Radiation Tolerance of Tantalum and Ceramic Capacitors

8.8.2025
91

TDK Releases Compact Polypropylene Film Capacitors for Resonant Topologies

7.8.2025
37

Root Causes and Effects of DC Bias and AC in Ceramic Capacitors

6.8.2025
66

Upcoming Events

Sep 3
15:30 - 17:30 CEST

How to Choose Your Magnetic Supplier

Sep 16
17:00 - 18:00 CEST

EMI Shielding Challenges

Sep 22
September 22 @ 13:00 - September 25 @ 15:15 EDT

Pre Cap Visual Inspection per Mil-Std-883 (TM 2017)

Sep 30
September 30 @ 12:00 - October 2 @ 14:00 EDT

MIL-Std-883 TM 2010

Oct 17
12:00 - 14:00 EDT

External Visual Inspection per MIL-STD-883 TM 2009

View Calendar

Popular Posts

  • Buck Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Boost Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • Flyback Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • LLC Resonant Converter Design and Calculation

    0 shares
    Share 0 Tweet 0
  • What is a Dielectric Constant and DF 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
  • Dual Active Bridge (DAB) Topology Explained

    0 shares
    Share 0 Tweet 0
  • How to Design an Inductor

    0 shares
    Share 0 Tweet 0
  • Core Materials, Permeability and Their Losses

    0 shares
    Share 0 Tweet 0
  • MLCC Case Sizes Standards Explained

    0 shares
    Share 0 Tweet 0

Newsletter Subscription

 

Passive Components Blog

© EPCI - Leading Passive Components Educational and Information Site

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

No Result
View All Result
  • Home
  • Knowledge Blog
  • Premium Suppliers

© EPCI - Leading Passive Components Educational and Information Site

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