What are the brands of solid-state capacitors?

Solid state capacitors, also known as solid-state aluminum electrolytic capacitors, are widely used in high-end consumer electronics, industrial control, automotive electronics, and other fields due to the use of conductive polymers as electrolytes, which have advantages such as low ESR (equivalent series resistance), high ripple current resistance, long lifespan, and high reliability. Here are the main brands and selection suggestions for solid-state capacitors from three dimensions: global technology leaders, local Chinese forces, and emerging innovative enterprises:
1、 Global Technology Leader: High end Market Leader
1. Panasonic (Japan's Panasonic)
Status: Ranked first in the global solid-state capacitor market share (approximately 35%) and a technological benchmark.
Advantages:
Ultra low ESR: 1m Ω level product (SP Cap series), suitable for CPU/GPU core power supply.
High frequency characteristics: self resonant frequency>10MHz, meeting the requirements of 5G communication modules.
Vehicle grade certification: Passed AEC-Q200 Grade 1 testing, with a temperature resistance of -55 ℃~+150 ℃.
Typical applications: Dell servers, Tesla car chargers, Sony game consoles.
2. Nichicon (Nichicon, Japan)
Status: Ranked second in the global market share (about 25%), a strong player in the consumer electronics field.
Advantages:
Miniaturization: 4mm x 5.8mm package (PSE series), with a capacity of up to 47 μ F/25V.
Low impedance: Conductive polymer electrolyte, ESR<10m Ω, suitable for high-frequency switching power supplies.
Medical certification: Compliant with ISO 13485 standard, used for life support equipment.
Typical applications: Lenovo laptops, Toyota automotive electronics, Siemens medical equipment.
3. Rubycon (Japanese ruby)
Status: Ranked third in global market share (approximately 20%), expert in high-end solid-state capacitors.
Advantages:
High voltage withstand: 600V/150 μ F series, used for industrial frequency converters.
Long life design: Through a lifespan test of 105 ℃/5000 hours, the ability to withstand ripple current has been improved by 30%.
Solid state polymer capacitor: Conductive polymer electrolyte with ESR as low as 5m Ω.
Typical applications: Huawei base station power supply, ABB industrial robots, Samsung displays.
2、 Chinese Local Forces: Technological Breakthroughs and Domestic Substitution
1. Aishi Group (Yishi, Yiyang, Hunan)
Status: China's leading solid-state capacitor, with a market share of about 15%, and technology inherited from Japan's Guimi Gong.
Advantages:
Breakthrough in vehicle specifications: Passed AEC-Q200 certification, with a temperature resistance of -55 ℃~+125 ℃.
High Capacity Series: 450V/820 μ F Series, benchmarked against international brands.
Cost advantage: The price is 20% to 30% lower than international brands.
Typical applications: Xiaomi phones, Gree air conditioners, BYD battery management system.
2. Jianghai Corporation (Nantong, Jiangsu)
Status: China's leading enterprise in aluminum electrolytic capacitors, with a market share of about 10% and strong vertical integration capabilities.
Advantages:
Self developed electrolyte: High temperature resistant electrolyte, working temperature range -55 ℃~+150 ℃.
Large size capacitor: packaged in 100mm × 200mm, with a capacity of 100000 μ F/450V.
Fast delivery: Localized supply chain, shortened delivery cycle to 4 weeks.
Typical applications: State Grid, CRRC, Haier Home Appliances.
3. Greenstone (Zhaoqing, Guangdong)
Status: Pioneer in solid-state capacitors in China, with a market share of about 5%, focusing on consumer electronics.
Advantages:
Ultra miniaturization: 2mm x 3mm package (GS series), with a capacity of up to 10 μ F/6.3V.
Low ESR: Conductive polymer electrolyte, ESR<5m Ω, suitable for fast charging power supplies.
High frequency characteristics: self resonant frequency>10MHz, suitable for Wi Fi 6 modules.
Typical applications: OPPO phones, TWS earphones, smartwatches.
3、 Emerging Innovative Enterprises: Breakthroughs in Segmented Fields
1. Lelon (Taiwan)
Status: The global market share of solid-state capacitors is about 5%, with significant cost-effectiveness advantages.
Advantages:
Vehicle grade product: Passed AEC-Q200 certification, with a temperature resistance of -55 ℃~+125 ℃.
Large capacity solution: 450V/330 μ F series, used for LED driver.
Quick response: supports small batch customization, with a delivery cycle of 6 weeks.
Typical applications: automotive electronics (such as car chargers), security monitoring.
2. United Chemi Con
Status: Global electrolytic capacitor giant, with a market share of about 10%, focusing on the industrial sector.
Advantages:
Ultra high voltage capacitor: 800V/220 μ F series, used for medical X-ray equipment.
Radiation resistant design: cumulative dose>100krad, suitable for aerospace applications.
Miniaturization: 3mm x 5mm package, with a capacity of 47 μ F/50V.
Typical applications: nuclear power plant control systems, satellite power modules.
3. Samwha (Sanhe, South Korea)
Status: With a global market share of approximately 5% in solid-state capacitors, it is an innovator in the consumer electronics field.
Advantages:
Flexible terminal: Flexible solid-state capacitor with a bending radius of less than 3mm.
Ultra thin design: thickness<1mm, suitable for smart wearable devices.
Low leakage current:<0.1 μ A, suitable for high-precision analog circuits.
Typical applications: Samsung foldable phones, LG smartwatches.
4、 Selection Decision Framework
Performance priority scenarios (such as 5G base stations, automotive electronics):
Selection: Panasonic, Nichicon, Rubycon
Key parameters: Voltage resistance (>450V), ESR (<10m Ω), operating temperature (-55 ℃~+150 ℃)
Cost sensitive projects (such as consumer electronics, IoT):
Selection: Aihua Group, Emerald Lelon
Key parameters: Cost (<0.5 USD), Package size (2mm × 3mm), Static current (<1 μ A)
Special technical requirements (such as high frequency and high voltage):
Selection: Panasonic (polymer capacitor), United Chemi Con (ultra-high voltage capacitor)
Key parameters: switching frequency (>1MHz), withstand voltage (>800V), radiation tolerance (>100krad)
Domestic substitution demand (such as communication equipment, household appliances):
Selection: Jianghai Group, Aihua Group
Key parameters: Performance benchmarking (such as international brands with a tolerance difference of less than 5%), certification compatibility (UL/CE/AEC-Q200)
5、 Industry Trends and Challenges
Material Innovation:
Conductive polymer electrolyte: achieving ultra-low ESR (<1m Ω) and promoting high-frequency solid-state capacitors.
Nanomaterials: Enhance the high-temperature resistance of electrolytes and extend their lifespan.
Technological breakthrough:
3D winding technology: Increases unit volume capacity by 3 times, suitable for compact equipment.
Laser welding: improves the bonding strength between pins and capacitors, and increases mechanical stress resistance by 50%.
Market challenges:
Fluctuations in raw material prices: Aluminum foil prices have risen by 10% to 15%, compressing profit margins.
Trade barriers: The US technology blockade against China affects the procurement of high-end equipment.
Through the above brand matrix and decision-making framework, the technical requirements and commercial demands of solid-state capacitors can be accurately matched, helping system design achieve the best balance between performance, cost, and reliability. With the advancement of materials science and manufacturing technology, solid-state capacitors will continue to develop towards miniaturization, high frequency, and high reliability.