Top 11 AC adapter vendors in Japan

Last updated: November 29, 2022 at 10:28 am

It is always tempting to save money by buying the cheapest products, but sometimes you get what you pay for. When it comes to power adapters, in particular, it’s important to choose one that meets your needs and will last you through your warranty period, not one that just meets your budget today. To help you decide when buying an AC adapter, we’ve identified the top 11 AC adapter vendors in Japan and highlighted their most unique features.

Prowin Power

Prowin Power, as a leading manufacturer and vendor of power supply units, offers top-of-the-line products and services. The company has a three-year warranty on all its products and has experienced R&D engineers to design the power supply unit to meet customers’ requirements. Furthermore, they offer a one-stop power supply solution for various applications. Prowin Power offers a variety of AC adapters, power inverters, and other products to meet your needs. With their ten years of experience, Prowin Power can provide the best solutions for your every need.

Key Products:

  • PD Power Adapter
  • Desktop Power Adapter
  • Wall Mounted Power Adapter
  • Switching Power Supply
  • Meanwell Power Supply
  • Interchangeable Power Adapter

Cosel Asia Ltd.

Cosel Asia Ltd. (Cosel) has been supplying quality power products to the Asia-Pacific region since 1998. Cosel Asia’s main responsibility is to improve switching power supply product marketing and customer service in the Asia-Pacific and Middle East regions. They are constantly discussing new technology in order to incorporate high levels of dependability into future products. Currently, Cosel Asia serves its clients through distributors in the following nations: China, Hong Kong, Taiwan, Korea, Taiwan, the Philippines, Thailand, Malaysia, Singapore, India, Australia, New Zealand, and Israel.

Key Products:

  • AC-DC Switching Power Supply
  • Enclosed Type
  • AC380V 3φ Input
  • CVCC
  • Open Frame Type
  • DIN Rail Type
  • Configurable
  • PCB Mount Type
  • Medical
  • Power Module
  • Value-added
  • DC-DC Switching Power Supply
  • PCB Mount Type
  • Ultra Wide Input Range Converter
  • Power Module (Bus Converter)
  • POL Type
  • Value-added Type


MISUMI is developing two businesses: the FA business, which handles standard parts for automatic machines such as FA (Factory Automation), and the mold parts business, which handles mold parts for automobiles and electronic and electrical equipment. They also provide a wide variety of AC adapters that are designed to meet the demand of many kinds of devices. MISUMI’s products include 50- and 60-Hz voltage converters, universal adapters, and multifunctional adapters. MISUMI also offers top-of-the-line surge protectors with both coaxial and telephone protection, which will help ensure safe operation even during emergencies. In addition to this wide range of products, MISUMI has a team that can provide technical support for any questions about installation or operation. The company was founded in 1963 for the purpose of selling electronic equipment and bearings. They handle more than 30 million items, including those from other manufacturers.

Key Products:

  • Mechanical parts system
  •  Housing/Adjustment fastening/Material
  •  Pneumatics, hydraulics, piping, temperature control parts
  •  Rotation transmission/Conveyor/Motor/Robot
  •  Linear Motion/Sensor/Positioning/Stage
  • Electrical system
  •  Harnesses, connectors, cables, wiring parts
  •  Control/Power distribution/Communication/Power supply
  •  mold system
  •  Consumables/repair items/fixtures


ASICS is a trading company established in 2003 that specializes in the import of electronic parts, such as RF components, antennas, power supplies, etc., to companies in a variety of different markets throughout Japan. As the sole and exclusive distribution agent of overseas suppliers, they have been focused on quality control and committed to providing better solutions, unique products, and service to their customers. As a company, ASICS is committed to protecting the environment by reducing its carbon footprint. They also recycle any materials that can’t be reused in new products while ensuring they meet all safety standards. They believe it’s important to not only focus on meeting the needs of today but also those of tomorrow by investing in sustainable practices and producing environmentally friendly products that will improve the world for coming generations.

Key Products:

  • Power Solutions
  •  AC DC Adapter
  •  Switching Power Supply
  •  DC/DC Converter
  •  DC Cord/jack
  •  AC Inlet
  •  LED Power Supply
  • Optical
  •  Optical Fiber, Connector
  •  Optical Component
  •  Transceiver


Nippon, which was founded in 1970, is Japan’s leading manufacturer of power supplies. Their product includes AC/DC power supplies, medical power supplies, ATX power supplies, UPS-function embedded ATX power supplies, and backup solutions, all of which are designed to be safe and reliable. Nippon’s products are highly durable, with a strong focus on safety as well as performance. In addition to design, the company also values environmentally friendly practices and sustainable development. They provide solutions to a wide range of high-end industries, such as IPC, servers, medical devices, factory automation, testing and measurement, inspection, money handling, transportation, amusement, and telecommunication.

Key Products:

  • AC/DC Unit Power Supply 
  • DC/DC Power Supply 
  • Option Accessories
  • UPS Embedded Pc Power Supply 
  • PC Power Supply 
  • AC/DC Open-Frame Power Supply

Toki Trading Co., Ltd.

Toki Trading Co., Ltd. was established in 2002 and handled AC adapters for industrial and medical equipment. They have been in the field of manufacturing, processing, importing, and exporting electronics products for over a decade. They offer a wide range of AC adapters that can be used at home and in the workplace. The range includes adapters for PCs, printers, business machines, lab equipment, and medical devices. Toki Trading Co., Ltd.’s philosophy centers around providing quality products at competitive prices to make their customers’ lives easier. Providing society with high-quality goods is the company’s stated mission.

Key Products:

  • AC Adapter
  • Power Supply/charger
  • Power Cable
  • Connector
  • PC Related
  • Others


SMI is a trading company specializing in power supply products, importing and selling products such as switching power supplies, AC adapters, and DC/DC converters. SMI offers a wide variety of adapters and carries products from the best brands in the industry. They deliver products for various applications, such as domestic medical equipment, industrial measuring equipment, and communication equipment. The company mainly handles power supply products specialized for medical equipment, including custom transformers for medical use, which can be said to be the starting point of their business.

Key Products:

  • AC DC Switching Power Supply
  • AC Adapter
  • DC/DC Converter
  • ACDC Power Module
  • Trance
  • Noise Filter
  • Sensor
  • Inlet
  • Code
  • Assembled Cord Connector
  • Power Strip

Asia Electronics Industry Co., Ltd. 

Asia Electronics Industry Co., Ltd. was established in 1974 and consistently developed and manufactured switching and other power supplies. As a leading company in the industry, Asia Electronics Industry Co., Ltd. offers an extensive range of electronics products, including connectors, switches, power supplies, and thermal management devices. Along with supplying quality electrical solutions for their customers, Asia Electronics Industry Co., Ltd. also ensures customer satisfaction by providing customer service that is second to none and by offering prompt delivery of orders on time. The company’s website provides detailed information about all its products as well as specifications such as dimensions, weight, and voltage ranges so that customers can easily make an informed decision about which product to purchase.

Key Products:

  • DC-DC converter
  • AC-DC switching power supply
  • DC-AC inverter


Kami Electronics was established in 1960 as a manufacturer of power transformers in Osaka. The company has since become a major supplier of home appliances, PC peripherals and accessories, and other electrical goods. Kami’s entire product line includes power supplies, chargers and adapters, inverters, transformers, connectors, cables, and connectors. Kami Electronics holds the following distribution rights as an authorized distributor: Panasonic (brand), Sanyo Denki (brand), Sharp AQUOS TV (brand), Philips Lighting (brand), Toshiba America Consumer Products (TCP), including their digital camera lines; Mitsubishi Electric Industrial Appliances Corporation.

Key Products:

  • Switching Transformer
  • AC Adapter
  • Low Frequency Power Transformer
  • Choke Coil Reactor
  • Switching Power Supply
  • Large Standard Transformer
  • Current Transformer (CT)
  • Voltage Detection Transformer (VT)
  • Small and Thin Power Supply
  • Impedance Matching Transformer
  • Kami’s Charger

Akon Co., Ltd.

Akon Co., Ltd. was founded in 2012 and has been developing, manufacturing, and selling switching power supplies for a decade now. The company offers a broad range of power supplies to meet the needs of high-end as well as entry-level customers, with a particular emphasis on industrial customers. Akon’s products are internationally recognized by leading power supply manufacturers, such as ABB, Eaton, and Schneider Electric. Akon Co., Ltd.’s headquarters and main factory are located in Hyuga City, Miyazaki Prefecture. It also has two factories in Osaka City and Tokyo.

Key Products:

  • Standard Power Supply
  • Custom Power Supply
  • LED Power Supply
  • AC Adapter
  • Current Sensor
  • System Development
  • Laser Marker

Index Pro Co., Ltd.

Index Pro Co., Ltd. operates as an electric appliance and home electronics retail chain company in Japan. The company offers various products, including air conditioners, electric cookers, refrigerators, washing machines, vacuum cleaners, rice cookers, electric blankets, and bedding sets. The company’s product range includes power adapters and chargers for laptops, tablets, and cell phones. They also provide accessories such as cables and hubs. Index Pro offers fast delivery service with affordable prices to meet the needs of its customers. They can deliver products anywhere within Japan within 24 hours at no extra charge. Index Pro offers a wide selection of products, so it should be easy to find an appropriate model no matter what your needs are. From basic AC adapters to more sophisticated ones that include LCD screens that show the battery level, Index Pro has what you need!

Key Products:

  • Electronic Parts
  •  Electronic Measuring Instruments
  •  Electronics Field
  • Industrial Field
  •  Control Parts
  •  Industrial ICT / IoT
  •  Fluid Parts / Mechanism Parts
  •  Automation System
  •  Measurement / Test
  •  Design / Analysis
  •  Factory Equipment / Factory Equipment
  • Application
  •  Medical/Healthcare
  •  Appliances/Housing Equipment/
  •  Industrial Equipment
  •  Automobiles
  •  Social Infrastructure
  •  Information Equipment/Communication Equipment
  •  Environmentally Resistant Equipment/Highly Reliable Equipment
  •  Solutions


Choosing the right AC adapter vendor in Japan can take time and effort. There are plenty of options, but Prowin Power has been on the market for over 9 years and has already established itself as one of the best suppliers in the industry. It offers high-quality power adapters to keep your devices powered up. With Prowin Power, you can rest assured that your device will have the power it needs to keep working. They offer excellent customer service and a large selection of products at competitive prices. If you’re looking to purchase an AC adapter or switching power supply, Prowin Power is a great place to start!

Are you trying to get the right power supply vendor? Let a reliable supplier provide you with high quality power supply solutions.

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