• 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

Nichicon Latest Technological Trends in Automotive Onboard Aluminum Electrolytic Capacitors

1.3.2018

4th PCNS Call for Abstracts Extended !

31.3.2023

KEMET SMD Tantalum Polymer Capacitors Meets Newly Released Military Performance Specification MIL-PRF-32700/1 and /2

31.3.2023

Practical LLC Transformer Design Methodology

31.3.2023

Practical Measurement of Crystal Circuits

31.3.2023

March 2023 ECIA NA Electronic Components Sales Misses Expectations

31.3.2023

Würth Elektronik Presents New Series of DC-Link Film Capacitors

30.3.2023
  • 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

    4th PCNS Call for Abstracts Extended !

    KEMET SMD Tantalum Polymer Capacitors Meets Newly Released Military Performance Specification MIL-PRF-32700/1 and /2

    Practical LLC Transformer Design Methodology

    Practical Measurement of Crystal Circuits

    March 2023 ECIA NA Electronic Components Sales Misses Expectations

    Würth Elektronik Presents New Series of DC-Link Film Capacitors

    Vishay Increases Anti-Surge Thick Film 0805 Power Resistor Performance with 0.5 W Power Rating

    Q&A Update on Aluminum Capacitor Technology with Industry Highest Energy Density >5J/cc Available for Acquisition

    Designing with High Voltage Resistors: 10 Top Tips for Success

    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

    Practical LLC Transformer Design Methodology

    Practical Measurement of Crystal Circuits

    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

    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

    4th PCNS Call for Abstracts Extended !

    KEMET SMD Tantalum Polymer Capacitors Meets Newly Released Military Performance Specification MIL-PRF-32700/1 and /2

    Practical LLC Transformer Design Methodology

    Practical Measurement of Crystal Circuits

    March 2023 ECIA NA Electronic Components Sales Misses Expectations

    Würth Elektronik Presents New Series of DC-Link Film Capacitors

    Vishay Increases Anti-Surge Thick Film 0805 Power Resistor Performance with 0.5 W Power Rating

    Q&A Update on Aluminum Capacitor Technology with Industry Highest Energy Density >5J/cc Available for Acquisition

    Designing with High Voltage Resistors: 10 Top Tips for Success

    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

    Practical LLC Transformer Design Methodology

    Practical Measurement of Crystal Circuits

    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

    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

Nichicon Latest Technological Trends in Automotive Onboard Aluminum Electrolytic Capacitors

1.3.2018
Reading Time: 6 mins read
0 0
0
SHARES
227
VIEWS

source: Nichicon article

In the automotive and onboard automotive-related areas, the performance of equipment such as advanced driver assistance systems (ADASs) is progressing together with the advancement of space-saving mounting parts to ensure comfortable vehicle interiors. To this end, even individual capacitors must conform to harsh environments, miniaturization and high-capacity requirements.
The latest technological trends in automotive onboard aluminum electrolytic capacitors are as follows.

RelatedPosts

4th PCNS Call for Abstracts Extended !

KEMET SMD Tantalum Polymer Capacitors Meets Newly Released Military Performance Specification MIL-PRF-32700/1 and /2

Practical LLC Transformer Design Methodology

UCV/UCH series of chip-type aluminum electrolytic capacitors with expanded ratings While NICHICON’s compact, high-capacity UCM series lineup meets demands for small sizes, the UCV series (image 1), realizes an even smaller size with an expanded rating to 16V. This product utilizes high-magnification anode foil, thinner cathode foil and thinner electrolytic paper to realize a smaller size than existing products. The product dimensions are Φ6.3 x 7.7L to Φ10 x 10L, the rated voltage range is 16–35V and the rated capacitance range is 220–1,500μF.

In addition to NICHICON’s UCZ series product line, we developed the UCH series realizing a more compact size and lower ESR. This product utilizes the electrolytes with low evaporation and low resistance and an optimized internal structure that, compared to the Φ6.3×7.7L dimensions of existing products, features a 75% reduction in the rate of increase of low temperature ESR to initial values after endurance testing. In October 2017, this product was expanded to a rating of 25V, product dimensions of Φ6.3×7.7L to Φ10×10L, a rated voltage range of 25–35V and a rated capacitance range of 47–560μF.
Along with high-density packaging, demands for products that are compact, high-capacity and high-performance are increasing, thus we plan to further heighten specifications in the future.

Image 2: UCH series of post-endurance testing ESR specification chip-type aluminum electrolytic capacitors

GYA series of conductive polymer hybrid aluminum electrolytic capacitors
Vehicle onboard electronic control units (ECU) and other components are frequently installed in the engine compartment, a high temperature environment. Aluminum electrolytic capacitors with a longer life and higher ripple current tolerance are now in greater demand than ever. To meet these needs, NICHICON developed the GYA series of conductive polymer hybrid aluminum electrolytic capacitors.

The GYA series utilizes hybrid electrolytes obtained by fusing conductive polymer and electrolytic solution and applying proprietary conductive polymer formation technologies to realize low ESR performance. In addition, by newly developing an electrolytic solution adapted to conductive polymer, low leakage current performance, which is a feature of the electrolytic solution, is achieved without impairing the performance of the conductive polymer. Furthermore, the adoption of conductive polymer that does not dry up makes it possible to extend the life even under high temperatures.

This lineup has product dimensions of Φ6.3×5.8L to Φ10×10L, a rated voltage range of 25–63V and a rated capacitance range of 10–330μF. The endurance rating is guaranteed for 4,000 hours at 125°C.
In the future, conductive polymer hybrid aluminum electrolytic capacitor applications are expected to expand and the market is expected to grow. In the automobile market, steady progress has been made and automated driving, ADAS and other technologies continue to expand as automotive electronics and high functionality advance even further. In light of this, NICHICON will promote the development of even higher capacity, heat resistant and high withstand voltage products.

In addition, we intend to expand lineups, from low- to medium voltage in response to consumer markets including home appliances, communication equipment and industrial equipment.

UXY series of lead-type aluminum electrolytic capacitors
ECUs usage has increased due to automotive electronics and the rise of electric and hybrid vehicles (EV/HV). The number of electronic components has also increased. ECUs are located in various places in an automobile and are connected by a wire harness with a tendency for the ECU to be concentrated in the engine compartment to simplify communication wiring and integrate electric machinery for a high degree of control. There is also a tendency to move the ECUs to the engine compartment to expand space in response to user needs for vehicle interior comfort and ensuring space for the trunk compartment. ECU’s mounted in the engine compartment must withstand high temperatures and high vibrations, the capacitors must also withstand these same conditions. The UXY series was developed to meet the demands for high temperature and vibration resistance.

Image 4: The UXY series of vibration-resistant lead-type aluminum electrolytic capacitors

The UXY series of vibration-resistant lead-type aluminum electrolytic capacitors

The vibration resistance of aluminum electrolytic capacitors must take into consideration the external terminals and internal lead structure fracturing. Regarding external terminal fractures, countermeasures can be taken to fix the aluminum electrolytic capacitor itself using a casing or potting material. However, with respect to the fracturing of internal leads, countermeasures are necessary within the aluminum electrolytic capacitor itself. Regarding the cause of internal lead fractures, in manufacturing aluminum electrolytic capacitors, the element diameter is designed to be smaller than the cases’ inner diameter to insert and seal the element in the case resulting in a gap between the element and the case inner wall. For this reason, under vibration, lead fatigue occurs due to vibration of the element within the gap inside the case, resulting in the lead wire fracturing. By eliminating this gap, fractures can be avoided, thus we developed a proprietary slitted (grooved) case. Figure 1 compares the structure of the UXY series to existing products.

【Figure 1】 Comparison of construction of previous product and UXY Series

Comparison of construction of previous product and UXY Series

Since the inside of the slitted case has a convex shape extending from near the case center to the bottom of the case, the gap between the element and the inner wall of the case is greatly reduced compared to existing products. This significantly suppresses internal element vibration compared to current products, realizing high vibration resistance. Our new slitted (grooved) case has 6 convex shaped indentations that extend from the center of the can to the bottom. These grooves hold the element firmly in place which significantly increases the vibration resistance of the capacitors.
Our research has determined 6 slits (grooves) to be the optimal number of grooves required to give maximum vibration resistance without having to change our production processes and without reducing the internal volume.

【Figure 2】 Results of number of slit simulations (Φ18×40L-equivalent element subjected to acceleration of 392m/s2 )

Results of number of slit simulations (Φ18×40L-equivalent element subjected to acceleration of 392m/s<sup>2</sup> )

【Table 1】 Vibration test results

Vibration test results

*The test was carried out in the order of X direction, Y direction, Z direction with the same product.

UXY series specifications are shown below. Product dimensions are Φ18×31.5L and Φ18×40L, with a category temperature range of -40 to 135°C, a life of 3,000 hours, a rated voltage range of 25 to 50V and a rated capacitance range of 2,300 to 11,000μF. The vibration resistance performance is 10 to 2,000Hz in frequency, the amplitude and rate of acceleration is 1.5 mm or 392 m/s2 (40G), whichever is looser, the sweep speed is 0.5 octaves/minute and the vibration direction and time are X, Y and Z, two hours in each direction for a total of six hours (fixed product with fixture).

We developed the UXY series in order to meet actual user requirements and we were also able to improve the performance of our products because of these strict demands. While the maximum acceleration may be severe due to vibration resistance performance requirements, there are also cases where acceleration may be relatively gentle over a long period of time. Although user vibration resistance requirements may vary, vibration resistance performance for automobile electrical equipment will always be necessary. For this reason, although the UXY series is rated for up to 40G of vibration acceleration, we will respond to various vibration resistance requirements individually and meet the demands of automotive electrical systems.

Going forward, we will develop new technological innovations to meet even higher specification demands (high temperature resistance, compact size, high ripple tolerance, low ESR) in anticipation of higher aluminum electrolytic capacitor vibration resistance requirements in powertrain ECUs.

Related Posts

PCNS

4th PCNS Call for Abstracts Extended !

31.3.2023
115
Capacitors

KEMET SMD Tantalum Polymer Capacitors Meets Newly Released Military Performance Specification MIL-PRF-32700/1 and /2

31.3.2023
7
Market & Supply Chain

March 2023 ECIA NA Electronic Components Sales Misses Expectations

31.3.2023
23

Upcoming Events

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

Microelectronic Packaging Failure Modes and Analysis

Apr 5
11:00 - 12:00 CEST

Plugging – Filling – Tenting; WE PCB Webinar

Apr 6
April 6 @ 12:00 - April 7 @ 14:00 EDT

Space and Military Standards for Hybrids and RF Microwave Modules

View Calendar

Popular Posts

  • Why Low ESR Matters in Capacitor Design

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

    28 shares
    Share 28 Tweet 0
  • How to Choose the Right Inductor for DC-DC Buck Applications

    0 shares
    Share 0 Tweet 0
  • 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
  • Dielectric Constant and its Effects on the Properties of a Capacitor

    7 shares
    Share 7 Tweet 0
  • Understanding High-Precision Resistor Temperature Coefficient of Resistance

    0 shares
    Share 0 Tweet 0
  • Choosing Capacitors for Crossover Audio Circuits

    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.