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

Last Updated： Aggregation Period:Nov 05, 2025～Dec 02, 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 05, 2025～Dec 02, 2025
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 null/null
  5. 5 null/null
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Capacitor Product ranking

Last Updated： Aggregation Period:Nov 05, 2025～Dec 02, 2025
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 Causes and Countermeasures for Capacitor Failure: Short Circuit Failure AIC tech Inc.

Capacitor Product List

331～345 item / All 1149 items

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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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[Explanation of the Cause of Capacitor Failure] An electrolytic capacitor installed horizontally has burst.

[Explanation of the Cause of Capacitor Failure] An electrolytic capacitor installed horizontally has burst.

A structure that eliminates the filler material and fixes the element with ribs has been adopted! The installation method has been changed to be at the "12 o'clock position"!

We would like to introduce a case where a horizontally mounted screw terminal aluminum electrolytic capacitor failed and the sealing part burst. The failed screw terminal aluminum electrolytic capacitor was mounted horizontally with the pressure relief valve positioned at the "6 o'clock" direction. When a capacitor deteriorates or fails, the temperature of the capacitor element rises rapidly, causing gas to be generated inside. This capacitor uses a filler material to secure the element, and as the element temperature increases, this filler material softens and flows, blocking the pressure relief valve. As a result, the smooth operation of the pressure relief valve was hindered, leading to a crack in the sealing part. [Countermeasures] - Change the mounting method so that the pressure relief valve of the aluminum electrolytic capacitor is positioned at the "12 o'clock" direction. - Adopt a structure that secures the element with ribs instead of using filler material. *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] Electrolytic capacitors connected in series are shorted.

[Explanation of the Cause of Capacitor Failure] Electrolytic capacitors connected in series are shorted.

Increase the rated voltage of the capacitor to reduce the difference in leakage current, and also review the voltage divider resistance value!

We would like to introduce a case where a series-connected aluminum electrolytic capacitor short-circuited. When a capacitor with a high leakage current is included in a capacitor series, the voltage balance can be disrupted, causing the voltage to drift above the rated voltage, which may lead to the capacitor short-circuiting. For this reason, it is recommended to connect resistors (voltage divider resistors) in parallel with each individual capacitor when connecting capacitors in series. However, in this case, the leakage resistances of the individual capacitors varied significantly, causing the voltage divider resistors to not function properly. 【Countermeasures】 - To achieve a uniform voltage distribution across the series-connected individual capacitors, increase the rated voltage of the capacitors to reduce the disparity in leakage currents, and review the values of the voltage divider resistors. - Use capacitors from the same manufacturing lot to align the behavior of leakage currents against temperature changes and voltage fluctuations. - This can help stabilize the voltage division. *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] Capacity loss occurred, and then it became open.

[Explanation of the Cause of Capacitor Failure] Capacity loss occurred, and then it became open.

As a countermeasure, please ensure that the actual current applied is below the allowable value!

When the foil electrode type film capacitor was changed to a vapor-deposited electrode type film capacitor with the same rating, the capacitor failed open. Even with the same rating, the vapor-deposited electrode type is set to have a lower pulse current tolerance than the foil electrode type. This is because the vapor-deposited electrode has a higher resistance and generates more heat than the foil electrode. When a steep pulse current or high-frequency current is applied to the vapor-deposited electrode type, the capacitor heats up, causing the dielectric film to thermally shrink, which damages the junction between the vapor-deposited electrode and the collector electrode (metal spraying), leading to an unstable connection. Ultimately, the connection between the two becomes disconnected and fails open, but when high voltage is applied, sparks may occur, potentially causing a fire. [Countermeasures] ■ Ensure that the actual applied current remains below the allowable value. *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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Introduction to Capacitors: How Capacitors Work

Introduction to Capacitors: How Capacitors Work

Compact, high-capacity, high-voltage, and long-lasting! Capacitors have a simple yet very important role.

I will introduce the mechanism and function of a capacitor. The circuit symbol representing a capacitor consists of two parallel lines. This indicates that the capacitor is made up of two parallel conductive plates. The larger the surface area of the capacitor's electrode plates and the closer the distance between the two plates, the greater the capacity to store electricity. Additionally, the electrode plates are electrically separated by an insulating material, which gives the capacitor the ability to block direct current while storing electricity (capacitance). These materials are generally referred to as dielectrics. 【Functions of a Capacitor】 ■ Stores charge (electricity) ■ Does not allow direct current to pass, but allows alternating current to pass *For more details, please refer to the PDF document or feel free to contact us.

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Ultra-small high-capacity screw terminal aluminum electrolytic capacitor

Ultra-small high-capacity screw terminal aluminum electrolytic capacitor

It is a large-capacity aluminum electrolytic capacitor that contributes to miniaturization and high energy density.

This is a super compact, high-capacity screw terminal aluminum electrolytic capacitor, ideal for bank applications that require a large amount of energy instantaneously. ◆ The HCGW3 type offers up to 200% higher output compared to conventional VF types. - It is a top-level large-capacity aluminum electrolytic capacitor in the industry. - Utilizing our special anode foil and winding technology, we have achieved high storage capacity. ◆ With the industry's largest dimensions of φ121×283L, it reduces the number of units used. - The HCGWA type supports large capacities up to 400WV and 50,000μF. - By reducing the number of units used, it can lower the costs of associated components, wiring, and assembly. - It is also suitable for applications that require lightweight solutions, such as X-ray equipment for rounds. *For more details, please refer to the PDF document or feel free to contact us.

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Handbook Giveaway! '15 Case Studies on Causes and Countermeasures for Capacitor Failures'

Handbook Giveaway! '15 Case Studies on Causes and Countermeasures for Capacitor Failures'

We are offering a handbook that explains 15 cases of phenomena, causes, and countermeasures related to capacitor failures, complete with illustrations!

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 technological standards. The handbook explains the phenomena and causes of capacitor failures, along with examples of countermeasures, illustrated with diagrams. [Contents (partial)] ■ Symptoms to look for in capacitors ■ How capacitors fail (failure modes and factors) ■ Phenomena and examples of failures, factors and countermeasures (15 selected examples included!) ■ Appendix: Basic knowledge of capacitors *If you would like a copy of the handbook, please request the materials or view the PDF data from the download.

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Screw Terminal Type Aluminum Electrolytic Capacitor High Ripple Series VGLR

Screw Terminal Type Aluminum Electrolytic Capacitor High Ripple Series VGLR

Supports up to 100A, ideal for applications that require high current.

The "VGLR type" is a screw terminal aluminum electrolytic capacitor that improves the allowable ripple current value by approximately 50% compared to the conventional VGL type. The operating temperature range is -40 to +105°C, and the rated voltage is 350 to 500V.DC. By adopting low ESR technology and newly developed special anode foil, along with a high heat dissipation structure, it is possible to utilize the ripple correction factor based on wind speed conditions. 【Features】 ■ 105°C - 5,000 hours rated ■ Compliant with RoHS Directive ■ High ripple handling product with approximately 50% improved allowable ripple current value compared to conventional types ■ New heat dissipation structure, low ESR technology, and newly developed anode foil adopted *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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High Ripple Capability Standalone Aluminum Electrolytic Capacitor 'ZR2 Type'

High Ripple Capability Standalone Aluminum Electrolytic Capacitor 'ZR2 Type'

Adopts newly developed high-reliability electrolyte and special anode foil! Compliant with RoHS directive.

The "ZR2 type" is a board-mounted aluminum electrolytic capacitor that improves the allowable ripple current value by approximately 15% compared to the ZR type, which is designed for high ripple applications. The operating temperature range is -25 to +105°C. The rated voltage is 400, 450V.DC. It features a high heat dissipation structure with a pressure relief valve placed on the product's side, and it utilizes a newly developed high-reliability electrolyte and special anode foil. 【Features】 ■ 105°C - 3,000 hours rated ■ Compliant with RoHS directive ■ Approximately 15% improvement in allowable ripple current value compared to the ZR type, which is designed for high ripple applications ■ High heat dissipation structure with a pressure relief valve placed on the product's side ■ Utilizes a newly developed high-reliability electrolyte and special anode foil *For more details, please refer to the PDF document or feel free to contact us.

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