Founded by Coa Staff LLC with 2 members in Takada, Toshima-ku, Tokyo
Established
Our company's representative's 'Tosawa Weekly Report' has started serialization on our corporate website
Online shop 'Zai Costar Dot Com' was launched
Capital increased to 6 million yen
Capital increased to 10 million yen and reorganized into a corporation
Capital increased to 40 million yen
Kansai Branch opened
Established Nagano Logistics Center in Nagatoro, Saku City, Nagano Prefecture (Total floor area: 2830㎡, 2 minutes by car from Saku IC on the Joshinetsu Expressway, 8 minutes by taxi from Saku Daira Station on the Hokuriku Shinkansen)
Capital increased to 100 million yen
Obtained ISO 14001:2004 certification
Started next-generation service [From One] to achieve '0' surplus inventory
Started trading with ROHM Co., Ltd.
Started trading with Hirose Electric Co., Ltd.
Subsidiary CoreStaff Hong Kong Limited (Hong Kong) began operations
Signed official dealer agreement with Rochester Electronics, LLC
Signed agency agreement with Mouser Electronics, Inc.
Started transactions with Sumitomo 3M Corporation
Established Sendai Sales Office
Secondhand dealer license number: Tokyo Metropolitan Public Safety Commission No. 305511408430 issued October 7, 2014
Issued
Established U.S. subsidiary CoreStaff America Inc. (San Jose, California)
Started transactions with Sanken Electric Co., Ltd.
Started transactions with Shin Den Gen Industrial Co., Ltd.
Started transactions with Daishin Vacuum Co., Ltd.
Started transactions with Toko Electronics Co., Ltd.
Started transactions with Yamaha Corporation
Started transactions with TORACO POWER
Started transactions with FELLER GMBH
Opened Yokohama Office
Started transactions with Bernix Co., Ltd.
Started transactions with TDK Lambda Corporation
Established Fukuoka Office
Signed sales agency agreement with Maxim Integrated Product Inc.
Started transactions with ABE RICK Co., Ltd.
Started transactions with SunEdison Inc.
Started transactions with Stanley Electric Co., Ltd.
Started transactions with All Sensors Asia Pacific Co., Ltd.
Established Shenzhen Office of CoreStaff Hong Kong Limited
Established Toyama Office
Started transactions with Seiko Epson Corporation
Started operation of Alps Electric online sales system "Denkino™" with core staff
Started transactions with Tokin Corporation
Started transactions with Japan Crimp Terminal Manufacturing Co., Ltd.
Started transactions with Littelfuse LLC
Started transactions with Omron Corporation
Started transactions with I-PEX Inc.
Started transactions with Coilcraft, Inc.
Established CoreStaff Analysis Center
Established CoreStaff Thailand (Bangkok)
Established CoreStaff Germany (Dusseldorf)
Relocated headquarters (8F, Daiya Gate Ikebukuro, 1-16-15 Minamiikebukuro, Toshima-ku)
Started transactions with Sato Parts Co., Ltd.
Started transactions with Sanyo Electric Co., Ltd.
Started transactions with Zain Electronics Co., Ltd.
Celebrating 20th anniversary
Received a letter of appreciation from the Ministry of Economy, Trade and Industry for contributing to increased production of medical supplies, ventilators, and extracorporeal membrane oxygenators (ECMO) during the COVID-19 pandemic
Incorporated CoreStaff Thailand (Bangkok)
Started business alliance and transactions with Trusco Nakayama Co., Ltd.
Started business partnership with Mirai Industries Co., Ltd.
Started transactions with Efinix Inc.
Started transactions with GigaDevice.
CoreStaff Taiwan opened (Taipei)
Announced new logistics center construction (Saku City, Nagano Prefecture)
Signed sponsorship agreement with Saitama Seibu Lions (professional baseball)
Started transactions with Japan Automatic Machine Co., Ltd.
Started transactions with Rubicon Co., Ltd.
Signed agency agreement with Shauffner EMC Co., Ltd.
Started transactions with Amphenol Japan Co., Ltd.
Renewed sponsorship agreement with Seibu Lions.
Signed sales agency agreement with IriSo Electronics Industry Co., Ltd.
Relocated to new logistics center (Saku City, Nagano Prefecture)
ROHM Co., Ltd. has developed the SDR01 series, a high surge-rated chip resistor for automotive, industrial, consumer electronics, and AI servers. It achieves a 0.33W rated power, the highest in the industry for the 1005 metric size, enabling space savings through replacement from larger sizes and consolidation of resistors, and reducing component count.
ROHM Co., Ltd. has developed a 100V voltage-resistant MOSFET RS4P063BPHZG with industry-leading SOA capacity over a wide voltage range for automotive safety functions and protection circuits. The new product features a design that suppresses secondary breakdown, achieving approximately five times the SOA capacity compared to standard products of the same size.
ROHM Co., Ltd. has developed the TSC3PAK package (14.00 × 18.58 × 3.50 mm) for SiC MOSFETs. It supports surface mounting and features a heat-dissipation surface on top of the package, achieving heat dissipation performance equivalent to the conventional TO-247-4L. It is expected to improve efficiency and reliability in applications such as xEV onboard chargers and electric compressors.
ROHM Co., Ltd. developed a fourth-generation 650 V IGBT suited to electric compressors and HV heaters for vehicles and inverters for industrial equipment. It achieves a low on-state voltage of 1.55 V and high short-circuit withstand time of 7 μs at Tj = 25°C, and complies with AEC-Q101. A redesigned device structure increases current density and reduces losses.
ROHM Co., Ltd. has commercialized the 80 V AG16xFNxx MOSFET series for 48 V automotive power systems. The products use HPLF5060 and DFN3333 packages, enabling potential miniaturization compared with TO-252. Gull-wing leads and wettable-flank terminals improve reliability when mounted on circuit boards.
ROHM Co., Ltd. developed the RESDxVx series of ESD protection diodes, combining industry-leading low dynamic resistance with ultra-low capacitance. Designed for high-speed communication interfaces exceeding 10 Gbps, the series achieves capacitance as low as 0.24 pF for bidirectional and 0.48 pF for unidirectional devices. It can be used in a wide range of high-speed data communication applications.
ROHM Co., Ltd. added the TLRx728 and BD728x CMOS operational amplifier series for automotive, industrial, and consumer equipment. The products offer low input offset voltage, low noise, and high slew rate. Both series support rail-to-rail input and output, allowing fuller use of the supply voltage and providing a wide dynamic range.
ROHM Co., Ltd. developed general-purpose motor driver ICs for home appliances such as refrigerators and air conditioners, consumer products, and industrial equipment: the 20 V, two-channel BD60210FV and the 40 V, single-channel BD64950EFJ. Both use versatile packages that support design standardization and derivative models. Their low standby current (typical 0.0 μA, maximum 1.0 μA) helps reduce power consumption while applications are on standby.
ROHM Co., Ltd. added the automotive low-voltage MOSFET HPLF5060 to its lineup. Its 4.9 mm × 6.0 mm package is smaller than a TO-252 package, and its gull-wing leads and copper-clip bonding improve reliability and high-current capability.
ROHM Co., Ltd. developed the BD67871MWV-Z three-phase brushless DC motor driver IC for medium-voltage applications from 12 to 48 V. Its proprietary drive logic reduces FET heat generation while achieving low electromagnetic interference (EMI).