News

2014.08.08

Development of smallest-class surge absorber for power supply

The Electronic Materials and Components Company of Mitsubishi Materials Corporation (President: Hiroshi Yao, Capital: 119.4 billion yen) has developed the CDA70 and CDA70L, two series of smallest-class surge absorber for power supply. These surge absorbers are used to protect inverter power supply.
Inverter power supplies are used in industrial equipment such as the power source of solar power generation and in large electrical home appliances which are experiencing a rapid surge in demand mainly in emerging countries. Currently, it is increasingly prevalent for inverter power supplies to be designed by using more compact materials, thus realizing high performance, high functionality and increased productivity. Surge absorbers, electronic parts that protect electronic devices from abnormal voltage, are now becoming more compact, lower profile and increasingly multi-functional in accordance with market trends.
Our company's newly developed CDA70 series is a smallest-class chip product which enables the use of surface mount devices (SMD), while the new CDA70L series is a compact and low-profile radial lead product which enables the use of automatic mounting.
Both series realize compact size and high-density mounting for inverter power supplies to support a variety of mounting shapes from surface mounting to radial shape (5.0mm/7.5mm pitch). Furthermore, the series comes in 3 types of DC spark-over voltage: 2,700V, 3,000V, and 3,600V.
The Electronic Materials and Components Company of Mitsubishi Materials Corporation is advancing the business strategy of “promotion of marketing-driven R&D to achieve rapid development and commercialization of unique, value-added strategic products” as defined in our medium-term management plan “Materials Premium 2016”. In the future, the company will continue to anticipate market needs in advance in order to developed unique, value-added products for offering to our customers.

1. CDA70 series
Featuring small size (L: 4.0mm, W: 3.2mm, H: 2.4mm) and a surge current capacity of 2000A, the SMD product CDA70 series is a compact surge absorber for power supply.
The series has already acquired safety certification EN*1 and UL1449*2. A mass production system has already been established at MMC ELECTRONICS (THAILAND) LTD., a Thai subsidiary of our company.

2. CDA70L series
Featuring surge protection capability equivalent to the CDA70 series and supporting radial shapes with a lead wire pitch of 5.0mm/7.5mm, the CDA70L series is a compact surge absorber for power supply.
The CDA70L series realizes space-saving on the mounted surface, with approximately 30% the volume ratio of MMC's conventional product Surge Absorber DB60 (series). It also features a part height of approximately 11mm during mounting, as well as a low-profile and compact size. These attributes enable automatic mounting.
Furthermore, the absorber has been coated with a flame-retardant resin for insulation from adjacent parts during mounting. EN*1 safety certification has already been acquired, while procedures are currently being performed to acquire UL1449*2. We have already begun supplying samples, and mass production is scheduled to start in September 2014 at MMC ELECTRONICS (THAILAND) LTD., a Thai subsidiary of our company.

*1...European Norm (EN)
*2...Standard defined by Underwriters Laboratories Inc.

Photo 1: CDA70 series CDA70 series Compact size: L4.0mm×W3.2mm×H2.4mm

Photo 2: CDA70L series CDA70L series Supports radial shape with lead wire pitch of 5mm.

Photo 3: CDA70 series & CDA70L series CDA70 series & CDA70L series Saves space on the mounting surface.

Electronic Components Div., Electronic Materials & Components Company Web site

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