1、 Structure and Characteristics

Polar structure

Surface mount aluminum electrolytic capacitors are composed of an aluminum cylindrical negative electrode, 

a liquid/solid-liquid mixed electrolyte, and an oxide film medium. The positive and negative electrodes are 

strictly distinguished, and reversing them can easily lead to performance degradation or damage.

Environmental resistant design

Automotive grade products need to adapt to a wide temperature range of -40 ℃~+150 ℃, and be designed 

with seismic resistance (such as 30G vibration resistance) to avoid pin breakage or internal structural failure.

Performance advantages

Compared to industrial grade, it has lower ESR, greater ripple current tolerance, and longer lifespan (such as 

over 2000 hours), in compliance with AEC-Q200 automotive certification.

2、 Core application scenarios in automotive electronics

Power management filtering and voltage stabilization: used for DC power filtering in car multimedia, 

GPS, ECU and other systems to reduce ripple interference.

Energy storage and energy recovery: Supports instantaneous energy release and storage in hybrid 

power systems.

In car electronic devices, car entertainment systems (TV/DVD/audio), lighting driver modules, and gallium 

nitride PD fast charging require small-sized and high-capacity capacitors to ensure stable output.

Power system control

Used in the engine control unit (ECU) for signal coupling and decoupling, improving control accuracy 

and anti-interference ability.

3、 Key technical requirements for automotive grade products

Wide temperature range and reliability

It is necessary to maintain stable performance in extreme temperatures (-55 ℃~135 ℃) and frequent 

start stop vibration environments to avoid electrolyte drying up or medium layer damage.

Long lifespan and low loss

Automotive capacitors must have a lifespan of 2000 to 5000 hours or more, and the loss tangent (tan δ) 

and leakage current must be strictly controlled at a low level.

Packaging and process optimization

Adopting solid-liquid mixed electrolyte or patch packaging, reducing the volume (such as 8 * 10.5mm 

specification), suitable for high integration vehicle circuit boards.

4、 Typical vehicle specification solutions and product recommendations

Fulong Electronics FVA Series

Introducing specifications such as 220 μ F/50V, with wide temperature range (-55 ℃~125 ℃) and low 

ESR characteristics, specifically designed for in car multimedia systems.

Fulong Electronics Solid Liquid Hybrid Capacitor

Suitable for gallium nitride PD fast charging, resistant to large ripple current, supports working temperatures 

of -55 ℃~135 ℃, improves charging efficiency and safety.

Military/industrial grade derivative design

By strengthening the pin soldering process and explosion-proof structure (such as groove pressure relief 

design), mechanical failures caused by vibration can be avoided.

5、 Key points of selection and verification

Certification standard: Priority should be given to products that have passed AEC-Q200 certification.

Supplier evaluation: It is necessary to review the production capacity and quality control system to ensure 

long-term stability.

Application matching: Select low impedance or ripple resistant models based on specific scenarios such 

as high frequency and high power.

Through the above design optimization and strict verification, surface mounted aluminum electrolytic 

capacitors can significantly improve the reliability of automotive electronic systems and adapt to complex 

working conditions under the trend of intelligence and electrification.

About Us

Guangdong Fulong Electronic Technology Co., Ltd. is a private high-tech enterprise specializing in the research and development, manufacturing, and sales of aluminum electrolytic capacitors, certified by IATF16949，ISO9001, ISO14001, and ISO45001. The company has a building area of 17000 square meters and more than 50 automated production lines; The total investment is 50 million yuan (RMB), with more than 100 employees, including more than 20 engineering and technical, quality management, and production management personnel. The annual production of capacitors (4 * 5.4~16 * 21.5) is about 400 million pieces; Our products are mainly sold to domestic and international markets, and we strive to promote our company's products globally.

Jiangxi Fulong Electronic Technology Co., Ltd. is a wholly-owned subsidiary of Guangdong Fulong Electronic Technology Co., Ltd. established in Hukou County, Jiangxi Province with a total investment of 500 million yuan. It has 50 fully automated production lines and an annual output of approximately 1.2 billion capacitors (4 * 5.4~16 * 21.5).

Fulong Group has an international professional core technology research and development team for aluminum electrolytic capacitors and a global sales network. Rich experience in the design, research and development, and production management of aluminum electrolytic capacitors. The R&D team follows the technical design theory of aluminum electrolytic capacitors, complies with international and domestic legal and regulatory requirements (RoHs), and adheres to the highest international quality standards

Fulong Group has high-quality and stable raw material supply partners, and key raw materials (such as aluminum foil, electrolytic paper, etc.) are selected from well-known Japanese and Korean companies (KJCC KDKNKK, etc.), ensuring reliable and stable advantages in product quality, environmental protection, safety, and energy conservation.

Fulong Group has a group of highly qualified professional technicians and management personnel who can produce various series of sheet aluminum electrolysis products according to customer requirements. The products include high-frequency low impedance, low leakage, wide temperature, extremely low impedance, non-polar, ultra long life, medium high voltage long life, high reliability and other new types of special requirements for surface mount products; At the same time, the company's products can withstand a soldering temperature of 260 ℃, meeting the lead-free reflow soldering technology required for SMT in the whole machine factory. All technical indicators of the products have reached or exceeded the international level of similar products.

While strengthening management and expanding operational scale, Fulong Group is also committed to improving its competitiveness and customer satisfaction, continuously and steadily increasing customer and social trust, continuously meeting market demand, further optimizing environmental management and expanding social contributions, and developing together with the electronics industry.

Guangdong Follon Electronic Technology Co., Ltd.

Jiangxi Follon Electronic Technology Co., Ltd.

Address: Building 3, South District, Haishan Science and Technology Park, Hukou County, Jiujiang City, Jiangxi Province

www.follon.com

Professional manufacturer of high-quality surface mount electrolytic capacitors