CoreStaff Japan

What CoreStaff Japan does

CoreStaff Japan (コアスタッフ株式会社) is a privately held, Tokyo-headquartered authorized distributor of semiconductors and electronic components, founded on December 21, 2000 by President Masaki Tozawa. The company operates Japan's largest domestic e-commerce platform for semiconductors and electronic components, CoreStaff ONLINE, which lists approximately 100,000 self-owned inventory items and approximately 600,000 online-orderable items, serving approximately 95,000 registered members. Its core product is the CoreStaff ONLINE platform, supported by a network of eight domestic sales offices (Tokyo, Osaka, Nagano/Zero Hub, Sendai, Yokohama, Fukuoka, Oyama, Toyama) and six wholly owned overseas subsidiaries (Hong Kong, Taiwan, Shenzhen, Thailand, USA, Germany), plus a 15,020 sqm, four-floor automated logistics center called Zero Hub in Saku, Nagano that opened in August 2024 with AGV systems, climate control, and an on-site Analysis Center for counterfeit detection.

CoreStaff generates revenue through unit-based sales of semiconductors and electronic components via the self-serve e-commerce platform and dedicated enterprise field sales teams, supplemented by commission-based consignment sales for customer excess inventory, consolidated procurement (おまとめ便), paid logistics services (storage, kitting, taping, light assembly), urgent 24-hour global procurement, and recurring EOL (end-of-life) parts search and monitoring subscriptions. Notable proprietary offerings include Hitotsu Kara (ひとつから), which enables quantity-1 purchases with no minimum order quantity and same-day shipment; the EOL Continuous Search Service; Mimamori-kun, an automated inventory monitoring service replenishing through Rochester; and the PAS-JP consortium platform connecting approximately 20 distributor and manufacturer members for mutual inventory sharing.

The company serves enterprise electronics manufacturers such as Canon, Toshiba, Fujitsu, Hitachi, Tokyo Electron, Advantest, Keyence, Yaskawa Electric, IDEC, and Hamamatsu Photonics, alongside a long tail of small-and-medium electronics manufacturers needing small-lot procurement, prototyping, EOL parts, and urgent sourcing. CoreStaff holds ISO 27001 (JIS Q 27001:2025) and ISO 14001 certifications, received a METI letter of appreciation for COVID-19 medical supply contributions in 2020, and employs 248 people on a consolidated basis as of January 2026. Distribution partnerships are a key commercial lever, with recent additions including Nordic Semiconductor, Alliance Memory, Advanced Energy, EDAC, and Insight SIP, extending the line card across wireless, memory, power, and connectors.

Name

CoreStaff Japan

Legal name

コアスタッフ株式会社

Website

https://corestaff.co.jp

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

251–500 employees

Short description

CoreStaff Japan is a privately held Tokyo-based authorized distributor operating CoreStaff ONLINE, Japan's largest domestic e-commerce platform for semiconductors and electronic components, serving approximately 95,000 registered members and enterprise manufacturers such as Canon, Toshiba, Fujitsu, and Hitachi with no-MOQ small-lot sales, EOL sourcing, and global urgent procurement.

Ownership category

akta.pro rank

Product category

Electronic Components Distribution

NAICS

Household Appliances and Electrical and Electronic Goods Merchant Wholesalers (4236)

SIC

Wholesale-Electronic Parts & Equipment, Nec (5065)

akta.pro primary industry

Parts, Components, Refurbished & Reverse Logistics (Electronics) Distribution (CRAOACAK)

akta.pro secondary industry

Electronics Components & OEM/ODM Sourcing Marketplaces (CRAFAHAM)

Keywords

• Semiconductor distribution
• Electronic components
• Online component store
• EOL parts sourcing
• Small-lot procurement

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices14 records

Markets served

GTM type

B2B

Offering type

Digital Commerce or Content

Cost components

Supply Chain, Personnel, Infrastructure, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Semiconductor & Electronic Components Sales: Direct sales of semiconductors, electronic components, and module products through CoreStaff ONLINE e-commerce platform and field sales. Revenue from both self-owned inventory (ひとつから) and online-orderable inventory (~600万点).
2. 委託販売 (Consignment/Commission Sales): Commission-based sales service where customers' excess inventory is listed and sold on CoreStaff ONLINE, with CoreStaff earning a commission on each transaction. CoreStaff also purchases excess inventory outright and resells.
3. おまとめ便 (Consolidated Purchasing): Proxy purchasing service that consolidates orders from multiple suppliers (including those without formal accounts) into a single shipment, with CoreStaff bearing international shipping costs and charging a service margin.
4. 物流業務受託 (Logistics Outsourcing): Free services for acceptance, storage, return, and inventory counting; paid services for storage, shipping, kitting, taping, and light assembly at the Zero Hub facility.
5. 緊急調達・24時間緊急調達リレー (Urgent Procurement): Rapid global procurement service leveraging 5 global locations (Japan, Hong Kong, Thailand, USA, Germany) with guaranteed response times (3 hours for Asia, next morning for Europe/US).

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

CoreStaff operates Japan's largest domestic online semiconductor and electronic components store (CoreStaff ONLINE), enabling no-MOQ, quantity-1 purchases with same-day shipment from approximately 100,000 self-owned and 600,000 online-orderable SKUs. The offering is complemented by specialized services including urgent/24-hour global procurement, EOL continuous search, in-house counterfeit analysis and 1-year warranty, surplus inventory consignment, consolidated procurement, and the PAS-JP consortium platform connecting roughly 20 distributors and manufacturers.

Product overview

CoreStaff Japan operates a platform-plus-services model centered on CoreStaff ONLINE, a major Japanese e-commerce platform for semiconductors and electronic components. The core offering combines the online marketplace with specialized procurement services: ひとつから (Hitotsu kara) enables small-lot purchases from one unit with same-day shipping; 緊急調達 and 24時間緊急調達リレー provide rapid global sourcing; 品質保証・解析サービス offers in-house inspection and counterfeit detection; and 余剰在庫削減 helps customers manage excess inventory. The ecosystem is supported by the Zero Hub logistics center in Nagano and the Parts Alliance Service-JP (PAS-JP) consortium connecting multiple distributors. Additional services include EOL品継続調査サービス for discontinued product tracking, みまもりくん for inventory monitoring, おまとめ便 for consolidated procurement, and 物流業務受託 for outsourced logistics operations.

Differentiator

Problem solved

Functional benefit

Brands

• CoreStaff ONLINE: Online e-commerce platform for semiconductor and electronic components sales, offering same-day shipping, surplus inventory consignment sales, and one-piece minimum order purchases.
• Zero Hub
• EOL品継続調査サービス (EOL Continuing Search Service)
• みまもりくん
• ひとつから (Hitotsu kara)

Products and services

• CoreStaff ONLINE Japan's largest domestic online semiconductor and electronic components store, aggregating CoreStaff's own inventory, authorized Japanese distributors, overseas authorized distributors, and set-maker inventory. Supports same-day shipping for orders placed before noon, model-number search, category search, BOM import, and alternative-part search. Available in Japanese, English, and Thai.
• Hitotsu Kara (ひとつから) Service enabling purchase of semiconductors and electronic components from quantity 1 with no minimum order quantity, sourced from approximately 80 manufacturers and 70,000+ items in CoreStaff's self-owned inventory. Orders placed before noon ship the same day.
• Urgent Procurement (緊急調達) Rapid global procurement service leveraging CoreStaff's five international hubs (Japan, Hong Kong, Thailand, USA, Germany) to source semiconductors and electronic components with guaranteed response times of 3 hours for Asia and next morning for Europe/Americas.
• 24-Hour Emergency Procurement Relay (24時間緊急調達リレー) 24-hour emergency procurement relay service that hands off between CoreStaff's worldwide offices (Japan, Hong Kong, Thailand, USA, Germany) to prevent production line stoppages.
• Quality Assurance and Analysis Service (品質保証・解析サービス) In-house Analysis Center service performing 3-stage quality checks and counterfeit detection using transmission X-ray, fluorescent X-ray, microscopes, curve tracers, IC decapsulation, and LCR meters. Provides a 1-year warranty on products purchased through CoreStaff ONLINE.
• Surplus Inventory Reduction (余剰在庫削減) Consignment (entrusted) sales service that accepts customer excess semiconductor and component inventory and resells it through CoreStaff ONLINE to domestic and international customers, addressing the disposal side of surplus inventory management.
• EOL Continuous Search Service (EOL品継続調査サービス) Monthly global market search service for end-of-life (EOL) semiconductor and electronic component parts, with results reported to subscribers each month to improve the chance of finding scarce inventory over time.
• Mimamori-kun (みまもりくん) Automated monitoring service for customers' last-buy EOL inventory levels that triggers consignment-based transfer or replenishment procurement from authorized sources such as Rochester when inventory falls below safe thresholds.
• Omatome-bin Consolidated Procurement Service (おまとめ便) Proxy purchasing service that consolidates orders from multiple suppliers (including suppliers without formal accounts) into a single shipment, with CoreStaff bearing international shipping costs and charging a service margin.
• Logistics Outsourcing Service (物流業務受託) Outsourced logistics operations at the Zero Hub facility. Free services cover acceptance, storage, returns, and inventory counting; paid services cover storage, shipping, kitting, IC/electronic component taping, and light assembly.
• Parts Alliance Service-JP (PAS-JP) Consortium Consortium platform of approximately 20 semiconductor and electronic component distributors and manufacturers (including Avnet, PALTEK, Tokyo Electron Device, Innotech, All Device, Global Electronics) enabling mutual inventory sharing, cross-member account access, and coordinated sales support through CoreStaff ONLINE.
• WEB-MPI Industry-first service on CoreStaff ONLINE that allows customers to reserve inventory on the self-operated e-commerce site for a defined period without a purchase obligation, enabling inventory holding without removal obligation.

Named customers10 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

13 partnerships are on record, tiered core and minor.

• Advanced EnergycoreChannel Partner/ Reseller/ Distributor · 26 May 2026Distribution partnership for industrial and medical power supply products. US power manufacturer Advanced Energy partnered with CoreStaff, with sales beginning on CoreStaff ONLINE.
• EDAC Inc.coreChannel Partner/ Reseller/ Distributor · 30 March 2026Distribution partnership for connectors. Canadian connector manufacturer EDAC Inc. partnered with CoreStaff for distribution of various connector products.
• Insight SIPcoreChannel Partner/ Reseller/ Distributor · 12 March 2026Distribution partnership for wireless modules. French wireless module manufacturer Insight SIP partnered with CoreStaff for sale of multi-certified wireless products.
• 日本ガイシ (NGK)coreChannel Partner/ Reseller/ Distributor · 6 November 2025Distribution partnership for EnerCera (thin-film lithium ion secondary battery) products. CoreStaff began selling NGK's EnerCera series through CoreStaff ONLINE.
• Nordic SemiconductorcoreChannel Partner/ Reseller/ Distributor · 17 October 2025Distribution partnership for low-power wireless semiconductors and modules. CoreStaff began selling Nordic products including Bluetooth Low Energy components through CoreStaff ONLINE.
• Alliance MemorycoreChannel Partner/ Reseller/ Distributor · 27 June 2025Distribution partnership for memory products. US memory manufacturer Alliance Memory partnered with CoreStaff for distribution of various memory products.
• オータックス (Otax)coreChannel Partner/ Reseller/ Distributor · 3 July 2024Sales partnership for industrial switch products. CoreStaff began handling Otax industrial switches through CoreStaff ONLINE.
• 日本端子 (Nippon Tanshi)coreChannel Partner/ Reseller/ Distributor · 19 April 2024Sales partnership for connector and terminal products. CoreStaff began handling Nippon Tanshi products through CoreStaff ONLINE.
• イリソ電子工業 (Irisoeiden)coreChannel Partner/ Reseller/ Distributor · 5 April 2024Sales agency partnership for connector products. CoreStaff began selling Irisoeiden connector products through CoreStaff ONLINE to strengthen connector sales.
• アンフェノールジャパン (Amphenol Japan)coreChannel Partner/ Reseller/ Distributor · 16 November 2023Sales partnership for connector products. Amphenol Japan's aerospace, industrial, and automotive connectors are sold through CoreStaff ONLINE. Amphenol is a globally leading interconnect product manufacturer listed on NYSE (S&P 500).
• Saitama Seibu LionsminorGTM or Marketing Partner · 31 October 2023Sports sponsorship partnership. CoreStaff has renewed its sponsorship of the Saitama Seibu Lions professional baseball team, supporting community engagement and brand awareness.
• シャフナーEMC (Schaffner EMC)coreChannel Partner/ Reseller/ Distributor · 9 October 2023Agency partnership for EMC/EMI noise filters. CoreStaff sells Schaffner's inlet noise filters, single/three-phase noise filters, DC filters, and power quality products through CoreStaff ONLINE.
• PAS-JP Consortium Members (Avnet, PALTEK, Tokyo Electron Device, Innotech, and others)coreStrategic or Co-development PartnerPAS-JP is a consortium of ~20 semiconductor and electronic component distributors and manufacturers. CoreStaff serves as the consortium platform. Members share inventory, customer accounts, supplier relationships, and services (including EOL bank, counterfeit testing, and BOM procurement). Membership includes Avnet, PALTEK, Tokyo Electron Device, Innotech, All Device, Global Electronics, and others. Currently free of charge for members.

Scale indicators8 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Mouser Electronics: Mouser is a global authorized semiconductor and electronic component distributor focused on design engineers and small-batch buyers. It overlaps with CoreStaff's Hitotsu Kara and BOM procurement use cases among Japanese OEMs.
• Avnet: Avnet is one of the world's largest electronic component distributors, with deep Japan operations through Avnet Asia and membership in CoreStaff's PAS-JP consortium. It is both a competitor (in larger-account franchised distribution) and a partner through the consortium.
• Arrow Electronics: Arrow Electronics is a top-tier global electronic components distributor serving enterprise customers with full franchised lines and design-chain services. It competes for the same Japanese OEM/ODM accounts that CoreStaff serves, at significantly larger scale.
• Digi-Key Electronics: Digi-Key is a global high-mix, low-volume electronic components distributor with millions of SKUs and a strong Japanese customer base. It competes with CoreStaff for engineering buyers globally and sets the benchmark for breadth, but does not offer Japan-domestic same-day service at CoreStaff's scale.

Direct peers

• CHIP ONE STOP: CHIP ONE STOP is a Japanese online distributor specializing in small-lot semiconductor and electronic component sales with same-day shipping. It is a near-direct competitor to CoreStaff ONLINE in the Japanese small-batch procurement segment.
• PALTEK: PALTEK is a Japanese distributor specializing in FPGA, semiconductor, and electronic components with design-in support. It is both a PAS-JP consortium partner and a comparable Japanese specialty semiconductor distributor with online sales channels.
• Macnica: Macnica is Japan's largest independent semiconductor and electronic components distributor, offering both authorized agency sales and an online platform. It is the closest direct peer to CoreStaff in scope, customer base (Japanese electronics OEMs), and business model, but at significantly larger scale.
• Tokyo Electron Device: Tokyo Electron Device is a Japanese semiconductor and electronic components distributor with design-in and solution services. It is a PAS-JP consortium member and a directly comparable domestic distributor serving Japanese electronics manufacturers.
• RS Components (RS Japan): RS Components operates a high-SKU catalog and e-commerce platform for electronic components and industrial supplies, serving design engineers and small-batch buyers. CoreStaff's CoreStaff ONLINE and Hitotsu Kara service compete head-on with RS Japan's quantity-1, fast-shipment value proposition.

Emerging players

• Rochester Electronics: Rochester Electronics is a global specialist in end-of-life (EOL) and obsolete semiconductors, providing authorized and aftermarket supply. CoreStaff explicitly names Rochester as an authorized replenishment partner for its Mimamori-kun and EOL services, making it a complementary rather than head-to-head competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about CoreStaff Japan