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Capacitor Product List and Ranking from 21 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Nov 19, 2025～Dec 16, 2025
This ranking is based on the number of page views on our site.

Capacitor Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Nov 19, 2025～Dec 16, 2025
This ranking is based on the number of page views on our site.

  1. AIC tech Inc. Tochigi//Electronic Components and Semiconductors
  2. オーエン Saitama//Electronic Components and Semiconductors
  3. 指月電機製作所 Hyogo//Industrial Electrical Equipment
  4. 4 ルビコン Nagano//Electronic Components and Semiconductors
  5. 5 坂本電機 Nagano//Electronic Components and Semiconductors
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Capacitor Product ranking

Last Updated： Aggregation Period:Nov 19, 2025～Dec 16, 2025
This ranking is based on the number of page views on our site.

  1. Causes and Countermeasures for Capacitor Failure: Short Circuit Failure AIC tech Inc.
  2. What is the difference between failure mode and failure mechanism? Basic information on capacitors is being provided. AIC tech Inc.
  3. 15 Examples of Causes and Countermeasures for Capacitor Failures (with Diagrams) AIC tech Inc.
  4. What are the causes of failure in multilayer ceramic capacitors? Basic knowledge materials are being offered. AIC tech Inc.
  5. 4 Guidelines for Harmonic Suppression Measures 指月電機製作所

Capacitor Product List

31～45 item / All 203 items

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Capacitor "POWERBLOCK"

Capacitor "POWERBLOCK"

Realizing high-speed supply of electrical energy! A product that actively maintains balance.

The "POWERBLOCK" is a dual-layer capacitor with a very high capacitance. It is a cascade-connected double-layer capacitor module for voltage support, enabling high-speed delivery of electrical energy. Additionally, the displayed configuration is a representative example, and it can be adapted in terms of capacitance, voltage, or dimensions at any time. 【Features (partial)】 ■ Modules with very high capacitance values ranging from 62F to 500F and rated voltages from 16VDC to 125VDC ■ Discharge current of up to 1900A ■ Maintenance-free ■ Series connection *You can download the English version of the catalog. *For more details, please feel free to contact us.

  • Capacitor

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Capacitor "DC-LINK HC"

Capacitor "DC-LINK HC"

Safe contact configuration with screw-in plates! This product has very low dielectric absorption.

The "DC-LINK HC" is a metallized polypropylene (PP) capacitor for DC link applications. It features an internal safety disconnector with self-healing capabilities and a secure contact configuration with screwable plates. Additionally, a 105°C version is available upon request. 【Features (partial)】 ■ Very high volume/capacitance ratio ■ Internal safety disconnector with self-healing capabilities ■ Secure contact configuration with screwable plates ■ Dry structure that does not use electrolytic liquid or oil ■ Negative capacitance change with temperature *You can download the English version of the catalog. *For more details, please feel free to contact us.

  • Capacitor

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Causes and Countermeasures for Capacitor Failure: What to Look For

Causes and Countermeasures for Capacitor Failure: What to Look For

To use the capacitor properly! We will introduce examples of failure phenomena, causes, and countermeasures.

AICTech's capacitors apply strict quality control and safety standards in the design and manufacturing of their products. However, with current technology levels, it is difficult to achieve zero failures in capacitors. When a failure occurs, the capacitor loses its basic functions of storing charge in direct current and eliminating noise and ripple current. In the worst case, there is a risk of ignition leading to a fire. If you notice conditions such as "cracks in the case" or "smoke coming out," it indicates a failure, and you must immediately disconnect the power and take appropriate action. The related catalog explains the phenomena and causes of failures, as well as examples of countermeasures, to help you use capacitors properly. Please take a moment to read it. *For more details, please refer to the PDF document or feel free to contact us.*

  • Capacitor

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Causes and Countermeasures for Capacitor Failure: Open Failure

Causes and Countermeasures for Capacitor Failure: Open Failure

The main causes of open failure are mainly disconnection and significant increase in resistance! Introducing how capacitors fail.

When a capacitor fails open, the circuit becomes completely disconnected. For example, using a large-capacity capacitor in the power supply smoothing circuit can flatten a voltage waveform that resembles a large wave into a stable DC voltage. However, if the capacitor opens, high voltage may be applied to the circuit, potentially causing semiconductor failure. The main causes of open failure are disconnection or a significant increase in resistance. These often occur at the connection points between the capacitor's external terminals and the wiring. Since the external terminals, internal wiring, and structure vary depending on the type of capacitor, there are various types of open failures. In addition to usage of the capacitor, factors such as vibrations or shocks during transport, and the arrangement of equipment on the circuit board can also contribute to open failures. Our related catalog provides a wealth of information on various failure phenomena and cases, as well as causes and countermeasures. Please feel free to download and take a look. *For more details, please refer to the PDF materials or feel free to contact us.*

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[Explanation of the cause of capacitor failure] It failed due to excessive ripple, and the electrolyte was ejected.

[Explanation of the cause of capacitor failure] It failed due to excessive ripple, and the electrolyte was ejected.

Please choose a capacitor considering the allowable ripple current, temperature, and frequency corrections!

We would like to introduce a case where an aluminum electrolytic capacitor used in the DC link of an inverter circuit overheated, causing the pressure relief valve to activate and the electrolyte to spray out from the capacitor. The cause was that a ripple current exceeding the allowable value flowed into the capacitor, causing it to overheat beyond its design specifications. Due to the overheating, the insulation deteriorated, leading to a short circuit, and the gas generated from the electrolyte increased the pressure inside the capacitor. The pressure relief valve activated, resulting in the electrolyte spraying out in aerosol form. **Countermeasures** - Confirm that the magnitude and waveform of the expected ripple current during the design phase match the specifications. - Select capacitors considering the allowable ripple current, temperature, and frequency corrections. *For more details, please refer to the PDF document or feel free to contact us.*

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[Explanation of the cause of capacitor failure] The pressure valve does not operate, and steam is ejected from the grounding surface.

[Explanation of the cause of capacitor failure] The pressure valve does not operate, and steam is ejected from the grounding surface.

Review the requirements for the pressure valve to operate and the regulations for ensuring safety, and secure the necessary space!

In this case, snap-in aluminum electrolytic capacitors were used in the power supply equipment, and to make the equipment thinner, the heat sink was closely positioned against the top of the capacitor. During a test for abnormal conditions in the equipment, an intentional overvoltage was applied to the capacitor, which caused the pressure valve located on the top of the capacitor to fail to operate and resulted in overheating. Subsequently, vapor from the electrolyte burst out from the grounding surface of the capacitor. The cause was that the capacitor shorted due to the overvoltage, leading to current flow and overheating. The heat vaporized the electrolyte, causing pressure inside the capacitor to rise, and since the pressure valve did not operate, gas from the electrolyte burst out from the sealing part of the capacitor on the grounding surface, shorting the wiring pattern on the substrate and causing a spark that resulted in smoke. [Countermeasures] - Review the requirements for the pressure valve to operate and the regulations for ensuring safety, and secure the necessary space. - If sufficient space cannot be secured, a type with a pressure valve on the side of the capacitor is recommended. *For more details, please refer to the PDF document or feel free to contact us.

  • Capacitor

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Explanation of the cause of capacitor failure: One of the capacitors connected in parallel has failed.

Explanation of the cause of capacitor failure: One of the capacitors connected in parallel has failed.

Revised the installation layout of the capacitor and changed the cooling method to reduce the effects of radiant heat!

We were using five aluminum electrolytic capacitors of the same rating and lot in parallel to eliminate ripple current, but I would like to introduce a case where one of these capacitors failed and the pressure relief valve was activated. Due to the constraints of the component layout on the circuit board, the failed capacitor was installed at a position away from the other capacitors. In that position, there were heat-generating components adjacent to it, and due to the radiant heat from these components, this capacitor was exposed to higher temperatures than the others. As a result, it experienced wear failure in a relatively short period, which caused the pressure relief valve to activate. [Countermeasures] - Review the mounting arrangement of the capacitors - Change the cooling method to mitigate the effects of radiant heat - It is recommended to use long-life capacitors that can handle high ripple currents *For more details, please refer to the PDF document or feel free to contact us.

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[Explanation of the Cause of Capacitor Failure] The aluminum electrolytic capacitor sparked.

[Explanation of the Cause of Capacitor Failure] The aluminum electrolytic capacitor sparked.

As a precaution, please discharge the accumulated charge before handling the capacitor!

During the replacement work of an aluminum electrolytic capacitor, when the terminals of the capacitor were connected with metal, a spark occurred, surprising the operator. When the capacitor is discharged, the charge stored in the electrodes disappears instantly, and the voltage between the terminals appears to be zero, but the dipole polarization of the dielectric is maintained. If the capacitor is opened with a short discharge time, the voltage is induced again at the electrodes due to the dipole polarization remaining in the dielectric. In other words, the charge stored in the dielectric seeps out and generates a re-induced voltage at the terminals. A spark occurred because the terminals were short-circuited with a conductor in this state. [Countermeasures] ■ Before handling the capacitor, connect a resistor of about 100Ω to 1kΩ between the terminals of the capacitor to discharge the accumulated charge. *For more details, please refer to the PDF document or feel free to contact us.

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[Explanation of the Causes of Capacitor Failure] A resin-coated capacitor ignited.

[Explanation of the Causes of Capacitor Failure] A resin-coated capacitor ignited.

When applying an overcoat, please select the resin considering the thermal expansion coefficient of the substrate!

The lead wire film capacitor mounted on the substrate was coated with resin. The connection between the capacitor element and the lead wire sparked, causing the capacitor to ignite. The cause was that the coated resin repeatedly expanded and contracted, applying stress to the capacitor. As a result, the connection between the capacitor element and the lead wire experienced stress and delaminated, leading to a spark when voltage was applied, which caused the capacitor to ignite. [Countermeasures] ■ When applying an overcoat, select resin considering the thermal expansion coefficient of the substrate. * For more details, please refer to the PDF document or feel free to contact us.

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A Must-Read Guide for Circuit Designers: 15 Examples of Causes and Countermeasures for Capacitor Failures

A Must-Read Guide for Circuit Designers: 15 Examples of Causes and Countermeasures for Capacitor Failures

Illustrating the issues of capacitor failures that help improve product reliability!

AICTech's capacitors apply strict quality control and safety standards in product design and manufacturing. However, it is difficult to achieve zero failures in capacitors with current technology standards. The handbook explains the failure modes, phenomena, causes, and countermeasures of capacitors, illustrated with case studies. [Contents (partial)] ■ How capacitors fail - Explanation of failure modes: open failure, short failure, etc. ■ Phenomena and case studies of failures, factors, and countermeasures (15 selected case studies included!) - Smoke coming from the capacitor - Loss of capacitance - Short-circuiting, etc. For confirmation points regarding countermeasures for these failures, detailed information is provided in the materials. *If you would like a copy of the handbook, please request the materials or view the PDF data available for download.

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[Information] Basic Knowledge of Capacitor Characteristics - Impedance Edition

[Information] Basic Knowledge of Capacitor Characteristics - Impedance Edition

A physical quantity that represents the ability of an electric circuit to carry alternating current! Parameters that represent alternating current characteristics.

In this document, we explain the concept of impedance as part of the fundamental knowledge of capacitor characteristics. We cover topics such as "What is impedance?", "The impedance of actual capacitors," and "Important elements that constitute impedance (ESR, ESL)." We also explain the characteristics of the ESR of aluminum electrolytic capacitors that use an electrolyte. Please feel free to download and take a look. 【Contents】 ■ What is impedance? ■ The impedance of actual capacitors ■ Important elements that constitute impedance (ESR, ESL) ■ ESR and ESL of aluminum electrolytic capacitors ■ Summary *For more details, please refer to the PDF document or feel free to contact us.

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AIC tech (AIC) [Distributor] such as capacitors

AIC tech (AIC) [Distributor] such as capacitors

Stable electricity even in harsh environments. - Capacitor

AIC Corporation is a specialized manufacturer engaged in the development, production, and sales of various capacitors, focusing primarily on aluminum electrolytic capacitors. Since its establishment in 1985, the company has been committed to domestic production, providing high-durability and high-reliability products across diverse fields. Capacitors that can withstand high-temperature environments and long-life applications are used in areas such as automotive, industrial equipment, inverters, LED lighting, and medical devices. In particular, products utilizing unique winding and sealing technologies achieve stable operation even under harsh environmental conditions.

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Disposal of capacitors

Disposal of capacitors

For companies struggling with the disposal of capacitors.

Aren't you having a lot of trouble disposing of capacitors? Haven't you been told that while they can take the transformers, they can't handle the capacitors? Our company utilizes our expertise in the installation of heavy electrical equipment and electrical devices to remove and dismantle large transformers and capacitors, including insulating oil. Please feel free to consult us regarding PCBs as well.

  • Transformers
  • Machinery and equipment installation/dismantling/relocation
  • Power storage device

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[Data] Shirutoku Report No. 35 #Alternative Capacitors

[Data] Shirutoku Report No. 35 #Alternative Capacitors

Could a substitute capacitor cause performance issues? Please contact us if you are having trouble with EOL.

★★Shirutoku Report: Useful Information You Can Benefit From★★ I mainly design matching circuits for high-frequency power amplifiers used in commercial radio equipment. In this report, I will share my experiences regarding the discontinuation of capacitors (EOL: End Of Life). For more details, please take a moment to read on. 【Contents】 ■ Recent EOL situation ■ Alternative capacitors may lead to performance issues!? *For more information, please refer to the PDF document or feel free to contact us.*

  • High frequency/microwave parts
  • Capacitor

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Puriken Co., Ltd. Printed Circuit Board Signal Quality

Puriken Co., Ltd. Printed Circuit Board Signal Quality

The beta pattern may become narrower in the clearance of the beer!

We would like to introduce "signal quality," which is a key design point for our company. The appropriate pattern width and via for the current value are roughly 1A/1mm and 1A/φ1.0mm. The placement of capacitors should be as close as possible to the corresponding terminals for those with smaller multipliers. GND vias should be placed as close to the pads as possible, and power lines should connect to the corresponding terminals via the capacitors, taking into account simultaneous switching of bus lines. 【Features】 ■ Appropriate pattern width and via for the current value ■ Solid patterns may become narrower due to via clearance ■ Placement of capacitors ■ Clock, control signals, and reset signals should be routed in a way that does not interfere with other wiring *For more details, please feel free to contact us.

  • Circuit board design and manufacturing

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