Nippon Chemi-Con Added MHS Series the SMD Type Aluminum Electrolytic Capacitors with Small-Size and High-Capacitance

PublishTime： 2023-09-10 Article Source：Nippon Chemi-Con News

Nippon Chemi-Con expands its product lineup by adding small-size, high-capacitance products with diameters of φ8 mm and φ10 mm to the SMD type Aluminum Electrolytic Capacitors MHS Series (currently available in φ12.5, φ16, and φ18mm).

MHS Series products guarantee a long life at 125℃ (φ8 to φ10 mm: 3,000 hours, φ12.5 to φ18 mm: 5,000 hours). The Series has a capacitance up to 3.8 times higher than that of conventional products of the same size (MVH Series) and ensures high-temperature reflow (JEDEC). They are suitable for the communications infrastructure market such as mobile phone base stations and the automotive electronics market.

In the 5th generation mobile communications system (5G), many small mobile phone base stations (small cells) are installed in increments of tens of meters to increase the capacity and speed of communication. This requires smaller capacitors. Base stations operate 24 hours a day and are difficult to maintain when installed in remote areas. Therefore, aluminum electrolytic capacitors are required to have high temperatures and long-life performances. High-temperature reflow capability is also required due to simultaneous mounting with many other surface mount products.

The development of autonomous driving technology and ADAS (Advanced Driver Assistance System) is progressing rapidly, and ECU (Electronic Control Unit) plays an important role. ADAS-based ECUs (for example camera ECU) are located close to sensors and tend to be exposed to direct sunlight. They are also sealed due to waterproof and dustproof structures, so the inside of an ECU is a high-temperature environment. Furthermore, the market demand for higher capacitance for measures against momentary power failure is increasing.

To meet the requirements of the communications infrastructure market and automotive electronics market, Nippon Chemi-Con is adding sizes φ8 mm and φ10 mm to Nippon Chemi-Con small, high-capacitance products that are compatible with high temperatures and high-temperature reflow.

Nippon Chemi-Con has already commercialized the MVH Series as high-temperature compatible products (125℃) sized φ8 to φ18 mm. The newly developed MHS Series has a maximum 3.8 times higher capacitance compared to the MVH Series, achieving the industry's highest capacitance in products guaranteeing long life at 125℃. This was achieved by making the following two improvements: (1) increasing the aluminum electrode foil capacitance (increasing surface area) using a thinner separator than the MVH Series, and (2) using the newly developed high-capacitance electrode foil.

Nippon Chemi-Con has achieved both long lives at 125℃ and high-temperature reflow by adopting a high-performance electrolyte with excellent low-temperature characteristics, low vapor pressure, and low evaporation at high temperatures, as well as a newly developed sealing rubber that suppresses the evaporation of electrolyte at high temperatures.

Main Specifications

- Category temperature range: -40℃ to +125℃

- Rated voltage range:

φ8 to φ10 - 16 to 80 V φ12.5 to

φ18 - 16 to 100 V

- Capacitance range: 62 to 6,200µF

- Case size:

φ8 x 10 L

φ10 x 10 L

φ12.5 x 13.5 L, φ12.5 x 16 L

φ16 x 16.5 L, φ16 x 21.5 L

φ18 x 16.5 L, φ18 x 21.5 L (8 sizes)

- Endurance: φ8 to φ10

- guarantees 3,000 hours at DC 125℃ φ12.5 to φ18

- guarantees 5,000 hours at DC 125℃

- Representative value of initial ESR

(Comparison of MVH and MHS, rates in the MHS columns are decline rates of ESR compared to MVH)

- Representative value of rated capacitance

(Comparison of MVH and MHS, rates in the MHS columns are rise rates of Cap compared to MVH)

- Recommended reflow conditions

■φ8 x 10 L, φ10 x 10 L

Peak temperature: 250℃, 40s at 245℃ and higher, 90s at 217℃ and higher, 3 times or less

■φ12.5 x 13.5 L to φ18 x 21.5 L

Peak temperature: 245℃, 20s at 240℃ and higher, 70s at 217℃ and higher, 3 times or less

Samples and Mass Production

Samples: March 2020

Mass production: October 2020

Production Sites

φ8 to φ10mm: Chemi-Con Miyagi Corp.

φ12.5 to φ18mm: Chemi-Con Iwate Corp.

Product Appearance

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