Japan Electronic Materials

What Japan Electronic Materials does

Japan Electronic Materials Corporation (JEM; 日本電子材料株式会社; TSE Standard: 6855) is a Japanese specialty manufacturer founded in April 1960 and headquartered in Amagasaki, Hyogo Prefecture. The company operates in two segments: probe cards for semiconductor wafer testing and electron tube components (heaters, cathodes, filaments) for display applications. Its core business is probe cards — precision electromechanical interfaces that electrically connect automated test equipment to semiconductor wafers during wafer-sort and final-test. JEM entered the probe card industry in 1970 through technical cooperation with US firm Rucker & Kolls, becoming Japan's first probe card manufacturer.

JEM's product portfolio is organized into three technology families: cantilever-type probe cards (C/CE series) for logic IC testing; M-type MEMS-based vertical probe cards (MC series for DRAM and NAND flash memory, MT series for flip-chip logic); and V-type vertical probe cards (VS, VC, VT, VE series) addressing various device types. This breadth allows JEM to serve memory manufacturers (DRAM, NAND), logic/SoC producers, MCU vendors, and image sensor fabs. Revenue is generated through direct B2B sales of custom-engineered probe cards to semiconductor fabs and test houses, with each card designed and qualified for a specific customer device — a model that produces project-based, design-in revenue rather than commodity volume.

The company operates a globally distributed manufacturing and service footprint covering Japan (HQ plus Kikuchi/Kumamoto and Sanda factories), the United States (Fremont, California), Hong Kong, China (Shenzhen, Shanghai), Taiwan (Hsinchu/Zhubei), France (Montbonnot Saint Martin), Thailand (Chonburi), South Korea (Hwaseong), and Singapore. In FY2025 (fiscal year ending March 2026), JEM reported revenue of ¥29,366 million (~23% year-over-year growth), operating income of ¥7,177 million, and net income of ¥5,451 million — record results supported by semiconductor industry demand and Japanese fab reshoring.

Name

Japan Electronic Materials

Legal name

日本電子材料株式会社

Website

https://jem-net.co.jp

Company type

Public

Founded year

1960

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Japan Electronic Materials Corporation manufactures MEMS-based and mechanical probe cards used in semiconductor wafer testing, serving memory (DRAM, NAND) and logic/SoC fabs globally. It also produces electron tube components for displays. Listed on TSE Standard (6855), headquartered in Amagasaki, Japan.

Ownership category

akta.pro rank

Product category

Semiconductor Test Equipment

NAICS

Semiconductor Machinery Manufacturing (333242), Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Semiconductors & Related Devices (3674)

akta.pro primary industry

Test, Probe & Burn-In Equipment (Wafer Sort/Final Test) (HDAHAEAJ)

akta.pro secondary industry

Sockets, IC Sockets & Test/Programming Interconnects (HDAHAOAF)

Keywords

• Semiconductor probe cards
• Wafer testing equipment
• MEMS probe technology
• Vertical probe cards
• Electron tube components

Headquarters

HQ city

Amagasaki

HQ country

Japan

HQ region

Asia

Offices13 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Probe Card Sales: Sale of semiconductor inspection components including cantilever type probe cards (C type), advanced probe cards (M type, V type), and related probe card technologies for DRAM, NAND flash, logic IC, and image sensor testing.
2. Electron Tube Parts Sales: Sale of electron tube components including filaments, cathodes for electron beam welding machines, various heaters, and related components for display applications.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Japan Electronic Materials manufactures and sells semiconductor probe cards used for wafer-level testing of IC/LSI devices before dicing and packaging. The product portfolio includes cantilever type (CE Series), MEMS-based M-type (MC Series for DRAM/NAND flash, MT Series for logic IC flip chips), and vertical contact V-type (VS, VC, VT, VE Series) probe cards. The company also manufactures electron tube components (heaters, cathodes, filaments) for display applications.

Product overview

Japan Electronic Materials (JEM) is a manufacturer specializing in probe cards and semiconductor testing components. The product portfolio consists of three main categories: Cantilever Type Probe Cards (C Type/CE Series) for logic IC testing; Advanced Probe Cards comprising M Type (MC Series for memory, MT Series for flip-chip logic) and V Type (VS, VC, VT, VE Series for various memory and logic applications including vertical contact and MEMS technologies); and Electron Tube Parts including heaters, cathodes, and filaments for display applications. The company positions itself as a world-leading probe card manufacturer supporting semiconductor quality through its comprehensive product lineup serving diverse semiconductor testing needs from DRAM/NAND flash memory to logic ICs, microcontrollers, SOCs, and image sensors.

Differentiator

Problem solved

Functional benefit

Brands

• MC Series: MEMS probe card for DRAM and NAND flash memory devices, supporting full wafer probing for 300mm wafers using MEMS technology and thin film multilayer wiring.
• MT Series
• VS Series
• VC Series
• VT Series
• VE Series
• CE Series

Products and services

• CE Series (Cantilever Type Probe Card) Cantilever type probe card with cantilever probe wires attached to epoxy ring. Used primarily for testing various types of logic ICs including high-current automobile devices and application processors.
• MC Series (MEMS Probe Card) MEMS probe card created with MEMS (Micro Electro Mechanical Systems) and thin film multilayer wiring technology supporting full wafer probing for 300mm wafers. Used primarily for DRAM and NAND flash memory device testing.
• MT Series (MEMS Probe Card) MEMS probe card with vertical MEMS probe supporting fine-pitch area arrays. Developed for flip chips with Cu pillar bumps and pads. Optimal for logic IC testing.
• VS Series (Vertical Probe Card) Vertical probe card with micro spring pins supporting various attachment methods. Recommended for flip chip, area array, and wafer-level CSP. Used primarily for MPU and NAND flash memory testing.
• VC Series (Vertical Probe Card) Vertical probe card with buckling structure supporting 12-inch size wafer batch contact. Designed for high-parallelism testing of memory and logic devices. Used primarily for NAND flash memory testing.
• VT Series (Vertical Probe Card) Vertical contact type probe card solving multi-DUT restrictions and improving electrical properties. Designed for multi-DUT testing of logic devices with fine-pitch peripheral pads. Used primarily for microcontrollers and SOC logic ICs.
• VE Series (Vertical Probe Card) Hybrid probe card structure combining vertical and cantilever probe card features. Developed for high-parallelism testing of CMOS imaging sensors with openings for light source.
• Electron Tube Parts (Electronic Tube Components) Heaters, cathodes, and filaments for receiving tubes, CRTs, and fluorescent character display tubes. Includes high-performance heaters with uniform insulating material coating and high-temperature heaters for high current density cathodes. Products serve color TV displays including HDTV, computer displays, measurement displays, and radar displays.

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Rucker & Kolls Mfg. Corp. (ルッカー＆コールス社)foundationalTechnology or Integration · 1 April 1970Technical cooperation agreement signed in April 1970 enabling JEM to start production and sales of probe cards for IC and LSI device measurements, marking Japan's first entry into probe card manufacturing.

Scale indicators8 records

Recent moves19 records

Expansion highlights5 records

Broad incumbents

• Cohu: Cohu provides semiconductor test and handling equipment, with product lines that interface with probe card-based testing workflows. It is comparable as a broad incumbent in the back-end test ecosystem serving similar semiconductor customers.
• Advantest: Advantest is the global leader in semiconductor automatic test equipment (ATE) and adjacent test solutions. While not a direct probe card competitor, it shares JEM's customer base of IDMs, foundries, and OSATs and represents an adjacent incumbent in the wafer test ecosystem.
• Teradyne: Teradyne is a major global ATE provider serving the semiconductor test market alongside its broader test portfolio. It is comparable as a broad incumbent in semiconductor test, though its business is centered on testers rather than probe cards.

Regional players

• ISC (Isc Semiconductor): ISC is a Japan-based test contactor and probe card company primarily serving the domestic Japanese semiconductor market. It is comparable as a regional Japanese peer with overlapping product offerings in cantilever and specialty test contactors.

Direct peers

• MPI Corporation: MPI Corporation is a Taiwan-headquartered test and measurement equipment provider with a dedicated probe card division offering vertical and cantilever cards. It is a comparable peer serving similar Asian semiconductor customers with overlapping product lines.
• Micronics Japan (MJC): Micronics Japan is a domestic Japanese probe card competitor with a strong product line across cantilever and vertical probe cards, particularly for memory and LCD driver IC testing. It is JEM's most direct Japanese-headquartered rival.
• FormFactor: FormFactor is the world's largest pure-play probe card manufacturer, with a comprehensive product portfolio spanning MEMS, vertical, and cantilever probe cards. It is the most direct global competitor to JEM across DRAM, NAND, logic, and SoC test markets.
• Chunghwa Precision Test Technology (CHPT): Taiwan-based CHPT is a leading probe card manufacturer in Asia with vertical, MEMS, and cantilever offerings serving foundries, OSATs, and memory fabs. It is a comparable peer in product scope and customer base, particularly across Taiwanese semiconductor customers.
• Technoprobe: Italy-based Technoprobe is a leading global probe card specialist, particularly strong in MEMS-based and vertical probe cards for advanced logic and memory testing. It competes head-to-head with JEM in serving tier-1 IDMs and foundries worldwide.

Emerging players

• Translarity: Translarity is a smaller, emerging probe card specialist focused on advanced and high-parallelism test applications. It is comparable as a niche player with overlapping product technology in vertical and MEMS probe architectures.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries9 records

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about Japan Electronic Materials