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Capacitor Product List and Ranking from 103 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Dec 31, 2025～Jan 27, 2026
This ranking is based on the number of page views on our site.

Capacitor Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Dec 31, 2025～Jan 27, 2026
This ranking is based on the number of page views on our site.

  1. 指月電機製作所 Hyogo//Industrial Electrical Equipment
  2. オーエン Saitama//Electronic Components and Semiconductors
  3. AIC tech Inc. Tochigi//Electronic Components and Semiconductors
  4. 4 敬誠 本社 Chiba//Trading company/Wholesale
  5. 5 null/null
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Capacitor Product ranking

Last Updated： Aggregation Period:Dec 31, 2025～Jan 27, 2026
This ranking is based on the number of page views on our site.

  1. Comprehensive Catalog of Power Capacitor Related Equipment 指月電機製作所
  2. Low-pressure phase advancing capacitor equipment 'N2 type, E type' 指月電機製作所
  3. Surge absorption capacitor and grounding capacitor 指月電機製作所
  4. 4 High Voltage Power Factor Correction Capacitor Equipment <Dry Type> 指月電機製作所
  5. 5 <Low Loss Type> Leading Power Factor Capacitor Equipment 指月電機製作所

Capacitor Product List

331～345 item / All 1163 items

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Capacitor "GTO MKP"

Capacitor "GTO MKP"

High pulse reliability and high effective current-carrying capacity! Excellent mechanical stability with nearly infinite lifespan.

The "GTO MKP" is a capacitor designed for pulse applications with internal series connections. It features high pulse reliability, high effective current-carrying capacity, excellent self-healing characteristics, high shock and vibration resistance, outstanding mechanical stability, and an almost infinite lifespan. It is a converter device used in power generation, as well as in traction technologies such as train drive systems, hoists, and crane drive systems. 【Functions (partial)】 ■ Pulse duty structure ■ Self-healing ■ Cylindrical capacitor body with axial screw and screw connection sizes M6 or M8 ■ Internal series connection from 400VAC ■ Very low dielectric loss tangent *You can download the English version of the catalog. *For more details, please feel free to contact us.

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Capacitor "SNUBBER FKP"

Capacitor "SNUBBER FKP"

The plate is directly soldered to the scoop page! It has a high pulse duty.

The "SNUBBER FKP" is a capacitor with a very low dielectric loss tangent. It features a low inductance structure with end-face contact. It is available in a reliable contact configuration with a 4-pin version and a screw-type plate connection. It is equipped with functions such as internal series connection and negative capacitance change with temperature. 【Functions (partial)】 ■ High pulse duty ■ Self-repairing ■ Particularly reliable contact configuration: 4-pin version and screw-type plate connection ■ Internal series connection ■ Very low dielectric loss tangent *You can download the English version of the catalog. *For more details, please feel free to contact us.

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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.

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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.

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Plastic film capacitor

Plastic film capacitor

All series are compliant with the RoHS directive! We introduce a variety of capacitors with different temperature ranges and rated voltages.

We would like to introduce our "Plastic Film Capacitors." We offer a wide range of products, including large-capacity cylindrical capacitors suitable for wind power generation, solar power generation, various inverters, chopper control, and charging/discharging, such as the "MLC type." Additionally, we have resin case capacitors suitable for DC link circuits and box-type capacitors in our lineup. 【Plastic Film Capacitor Lineup (Partial)】 ■ MLC type ■ MLC2 type ■ MLCA type ■ MKCP4 type ■ MKCP4T type *For more details, please refer to the PDF document or feel free to contact us.

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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.*

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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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Causes and Countermeasures for Failure of Data Capacitors: Aluminum Electrolytic Capacitors

Causes and Countermeasures for Failure of Data Capacitors: Aluminum Electrolytic Capacitors

Failures occur due to rapid chemical reactions that are greatly influenced by environmental factors such as temperature and atmosphere!

Aluminum electrolytic capacitors are essential electronic components for power circuits and electronic circuits due to their small size and large capacity. Most aluminum electrolytic capacitors are polarized, so they are typically used in DC circuits. Their operating principle utilizes chemical reactions, and they are also known as chemical capacitors. As a result, the performance of aluminum electrolytic capacitors is greatly affected by environmental factors such as temperature and atmosphere, and failures can occur due to rapid chemical reactions. In the related catalog, we provide detailed explanations of failure cases of aluminum electrolytic capacitors and film capacitors, along with their causes, root causes, and countermeasures. Please take a look. *For more details, please refer to the PDF materials or feel free to contact us.*

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Causes and Countermeasures for Capacitor Failures: Basic Knowledge of Capacitors

Causes and Countermeasures for Capacitor Failures: Basic Knowledge of Capacitors

Aluminum electrolytic capacitors can be used in a wide range of DC circuits! Here is an introduction to the basics of capacitors.

Aluminum electrolytic capacitors are polarized capacitors with a limited lifespan that apply electrochemical operating principles, and they are also known as chemical capacitors. These capacitors have high volumetric efficiency (capacitance per unit volume), can achieve large capacitance values in the thousands of microfarads, can withstand large ripple currents, and have high reliability, making them suitable for a wide range of applications in DC circuits. On the other hand, it is necessary to consider their relatively high leakage current compared to other capacitors, a wide capacitance tolerance range of ±20%, high equivalent series resistance, and their finite lifespan when using them. Related catalogs provide detailed information on the features and structure of aluminum electrolytic capacitors and film capacitors. 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 Causes of Capacitor Failure] Capacitor capacity reduction in the charge and discharge circuit.

[Explanation of the Causes of Capacitor Failure] Capacitor capacity reduction in the charge and discharge circuit.

As a countermeasure, please use capacitors that are compatible with the charging and discharging circuit!

We will introduce a case where the capacity of aluminum electrolytic capacitors decreased in a circuit where the charging and discharging of capacitors, such as welding machines and strobe flashes, is frequently repeated. When charging and discharging aluminum electrolytic capacitors repeatedly, the following reactions continuously occur on the surface of the cathode foil. [During Charging] Gas generation due to the electrolysis of the electrolyte [During Discharging] The charge on the anode foil moves to the cathode foil, oxidizing the cathode surface As a result, internal pressure rises, leading to open failures when the pressure relief valve operates, or failures due to the decrease in capacity of the cathode foil, which reduces the capacitance of the capacitor. This phenomenon can occur not only during charging and discharging but also when a large voltage fluctuation is applied to the capacitor. [Countermeasures] ■ Use capacitors with specifications suitable for the charging and discharging circuit in circuits where frequent charging and discharging occurs. *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.

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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 Causes of Capacitor Failure] The characteristics of electrolytic capacitors deteriorate at low temperatures.

[Explanation of the Causes of Capacitor Failure] The characteristics of electrolytic capacitors deteriorate at low temperatures.

The cause is the deterioration of the transient response performance of the output voltage, resulting in the inability to obtain the specified voltage! Here are some countermeasures.

We will introduce a case where a malfunction occurred during a low-temperature operation test of a DCDC converter, resulting in a decrease in output voltage. An aluminum electrolytic capacitor using electrolyte was used in the output section of the DCDC converter. Generally, at low temperatures below -20°C, the electrical conductivity of the electrolyte decreases and its viscosity increases, leading to a reduction in capacitance by several tens of percent, worsening frequency response, and increasing equivalent series resistance. As a result, it was determined that the transient response performance of the output voltage deteriorated, preventing the specified voltage from being achieved. [Countermeasures] - Confirm the capacitance, ESR, impedance, and frequency characteristics of the capacitor at low temperatures, and select an appropriate capacitor. *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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