S.E.R.
- Company typePrivate
- Founded1984
- HeadquartersTokyo, Japan
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
S.E.R. firmographics
Firmographics- Name
- S.E.R.
- Legal name
- ヒロセSER株式会社
- Website
- https://ser.co.jp
- Company type
- Private
- Founded year
- 1984
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Ownership category
- akta.pro rank
S.E.R. industry classification
Industry- Product category
- Semiconductor Test Equipment
- NAICS
- Electronic Connector Manufacturing (334417)
- SIC
- Electronic Connectors (3678)
- akta.pro primary industry
- Sockets, IC Sockets & Test/Programming Interconnects (HDAHAOAF)
- akta.pro secondary industry
- RF & Microwave Connectors and Coaxial Assemblies (HDAHAOAD)
Keywords
Where S.E.R. is headquartered
LocationHeadquarters
- HQ city
- Tokyo
- HQ country
- Japan
- HQ region
- Asia
Offices3 records
Markets served
S.E.R. business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales
Revenue model
- Semiconductor Test Equipment Sales: S.E.R. designs and manufactures IC test sockets, spring probe pins, and custom connectors for semiconductor testing applications. Revenue is generated through direct sales of these products to semiconductor manufacturers and test houses.
- Third-party Product Distribution: As a distributor for international electronic equipment and precision component manufacturers, S.E.R. resells products from ARDENT CONCEPTS, Sullins, ELVEFLOW, E-tec, DAEEUN, and Delphon Gel-Pak, earning margins on sales.
Go-to-market motion1 record
Distribution channels3 records
Marketing channels3 records
S.E.R. product offering
Product offeringCore offering
S.E.R. designs and manufactures precision interconnect hardware for the semiconductor and high-frequency electronics industries, including IC test sockets (BGA/LGA, FPGA, AiP, multi-impedance, image-sensor, crystal/MEMS), spring probe pins (including 0.7mm super-short and sub-terahertz variants), and custom high-frequency connectors (KTC series mmWave coaxial connectors, mmWave interposers, round-pin sockets, lens-mount connectors). The company also produces the RYURO biochip interface unit for microfluidics research and distributes complementary third-party products in Japan for brands such as ARDENT CONCEPTS, Sullins, ELVEFLOW, E-tec, DAEEUN, Delphon Gel-Pak, and Mac-Eight.
Product overview
S.E.R. (ヒロセSER株式会社) is a precision hardware manufacturer specializing in spring probe pins, test sockets, and custom connectors for semiconductor testing applications. The product portfolio includes: (1) Spring Probe Pins - various types including standard, super-short (L=0.7mm), Kelvin contact, fine pitch, scrub contact, non-magnetic, thermocouple, and stamping probes; (2) Test Sockets - comprehensive range for semiconductor final testing including coaxial structure sockets (80GHz), FPGA sockets, AiP sockets, multi-impedance sockets, image sensor sockets, BGA/LGA sockets, crystal/MEMS sockets, and system-level test sockets (YOROI); (3) Custom Connectors - using spring probes, round pins, and leaf springs including KTC series mmWave coaxial connectors (up to 100GHz), mmWave interposers, probe contacts, lens mount connectors, and precision round pin sockets; (4) Microfluidics - including RYURO biochip interface units and ELVEFLOW pressure controllers; (5) Distributed products from partner manufacturers including Delphon Gel-Pak cleaning products, ARDENT CONCEPTS Terminate-R and RC Spring Probes, Sullins connectors, E-tec SMT sockets, and DAEEUN products. The company became part of Hirose Electric Group in 2025.
Differentiator
Problem solved
Functional benefit
Products and services
- Coaxial Structure Socket High-frequency coaxial structure IC sockets supporting mmWave frequencies for semiconductor final testing, enabling reliable high-frequency testing of IC packages.
- FPGA Socket Solderless socket for FPGA and CPLD circuit development and operation verification, compatible with all FPGA/CPLD manufacturers and models.
- Antenna-in-Package (AiP) Socket Test socket specifically designed for antenna-in-package semiconductor devices, supporting AiP device characterization and testing.
- Multi-Impedance Socket Test socket supporting multiple impedance values for complex and diverse semiconductor testing requirements.
- Image Sensor Socket Test socket specifically designed for image sensor device testing during semiconductor qualification and production.
- Waveform Observation Socket Socket designed for signal waveform observation and probing during semiconductor testing.
- YOROI System-Level Test Sockets YOROI-branded product board sockets and system-level test sockets for comprehensive semiconductor test solutions.
- WLCSP Probe Card Sockets Probe card socket for Wafer Level Chip Scale Packaging (WLCSP) testing.
- BGA/LGA Sockets Test sockets for BGA and LGA package semiconductor devices.
- Crystal and MEMS Device Sockets Sockets for testing crystal devices and MEMS devices.
- RYURO Biochip Interface Unit Interface unit for microfluidic device researchers enabling quick chip replacement, simplified evaluation, and shortened setup time.
- Spring Probe Pins Comprehensive line of spring probe pins for various testing applications, including standard, super-short (length 0.7mm), Kelvin contact, fine pitch, scrub contact, non-magnetic, thermocouple, and stamping probes. Includes the sub-terahertz contact probe (2025 launch) achieving 150GHz transmission characteristics.
- KTC Series mmWave Coaxial Cable Connectors Millimeter-wave coaxial cable connector series supporting high-frequency applications up to 100GHz, used in mmWave, 5G, automotive radar, and satellite communications. Includes the 2026 launch of 100GHz-compatible PCB measurement coaxial connectors.
- mmWave Interposer Interposer solution replacing conventional coaxial connectors for high-density inter-board connections in mmWave applications.
- Probe Contact Probe contact products for custom connector applications across semiconductor and high-frequency test systems.
- Lens Mount Connector Lens mount connector designed for optical applications requiring precision interconnect.
- Round Pin Socket Precision round pin sockets using multi-finger and drum contacts, supporting lead diameters from 0.3mm to 1.07mm with minimum pitch of 1.27mm, designed for superior pin grip, vibration resistance, and durability.
- E-tec SMT Type IC Sockets Surface mount type IC sockets from E-tec (distributed in Japan by S.E.R.) supporting BGA, LGA, QFN, and QFP packages with pitch down to 0.5mm and pin counts exceeding 1,600.
- ELVEFLOW Microfluidics Pressure Controller Microfluidics pressure controller from ELVEFLOW (France), distributed in Japan by S.E.R. for fluidics control in lab-on-a-chip and biotech applications.
- Delphon Gel-Pak Probe Card Cleaning Products Elastomer-type probe card cleaning/refining products from Delphon Gel-Pak (USA), distributed in Japan by S.E.R. for removing debris, dust, and accumulated material from probe cards during testing.
- ARDENT CONCEPTS Terminate-R Multi-Coaxial Connector System Multi-coaxial connector system from ARDENT CONCEPTS (UK), distributed in Japan by S.E.R., supporting high-frequency test up to 70GHz.
- ARDENT CONCEPTS RC Spring Probe Contact RC Spring Probe contact technology from ARDENT CONCEPTS (UK) for high-speed narrow-pitch connector solutions, distributed in Japan by S.E.R.
- Sullins High-Temperature Flat Cable Connectors High-temperature resistant flat cable connectors from Sullins, distributed in Japan by S.E.R.
- Sullins High-Temperature Card Edge Connectors High-temperature resistant card edge connectors from Sullins, distributed in Japan by S.E.R.
- DAEEUN Products Various electronic component products from DAEEUN, distributed in Japan by S.E.R.
- Quantum Computer Coaxial Connector Cable Multi-coaxial connector cable for quantum computing applications, supporting extreme low-temperature and high-density interconnect requirements in quantum systems.
Quantifiable outcome
- Sub-terahertz contact probe technology achieving transmission characteristics at 150GHz
- +1 more outcomes
Companies that use S.E.R.
Customer profileSegments3 records
Ideal customer profiles3 records
S.E.R. technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature10 records
S.E.R. partnerships and signals
Strategic signalPartnerships
Nine partnerships are on record, tiered core and minor.
- Hirose Electric (ヒロセ電機)coreIn July 2025, S.E.R. became a group company of Hirose Electric Co., Ltd., one of the world's leading manufacturers of electronic connectors. This strategic affiliation provides S.E.R. with expanded distribution channels, greater manufacturing scale, and enhanced financial stability. Hirose Electric specializes in high-frequency connectors and other precision electronic components.
- ARDENT CONCEPTScoreBusiness partnership established in 2005 for distribution of ARDENT CONCEPTS products in Japan. ARDENT CONCEPTS (UK) specializes in high-frequency test connectors and Terminate-R multi-coaxial connector systems supporting up to 70GHz.
- Mac-Eight (マックエイト)minorS.E.R. distributes Mac-Eight products in Japan as an authorized reseller.
- SullinsminorS.E.R. distributes Sullins products including high-temperature flat cable connectors and card edge connectors in Japan.
- ELVEFLOWminorS.E.R. distributes ELVEFLOW (France) microfluidics pressure controllers in Japan.
- E-tecminorS.E.R. distributes E-tec SMT type IC sockets and E-tec Asia connectors and cables in Japan.
- DAEEUNminorS.E.R. distributes DAEEUN products in Japan.
- Delphon Gel-PakminorS.E.R. distributes Delphon Gel-Pak (USA) probe card cleaning products including Gel-PROBE REFINE and Gel-PROBE REMOVE, as well as Gel-Pak device carriers in Japan.
- Kuno Precision (九戸精密)coreProduction subsidiary established in 2017 as a group company to support manufacturing capabilities.
Scale indicators4 records
Recent moves8 records
Expansion highlights6 records
S.E.R. competitors and assessment
Company assessmentMarket position
Competitive moat4 records
Key highlights6 records
Customer concentration
S.E.R. social profiles
Digital presenceS.E.R. financial estimates
Financial estimateRevenue estimate
Valuation estimate
S.E.R. leadership team
Management profileNumber of profiles
S.E.R. subsidiaries and ownership
Company hierarchySubsidiaries1 record
S.E.R. funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
S.E.R. M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about S.E.R.
What does S.E.R. do?
S.E.R. designs and manufactures precision interconnect hardware for the semiconductor and high-frequency electronics industries, including IC test sockets (BGA/LGA, FPGA, AiP, multi-impedance, image-sensor, crystal/MEMS), spring probe pins (including 0.7mm super-short and sub-terahertz variants), and custom high-frequency connectors (KTC series mmWave coaxial connectors, mmWave interposers, round-pin sockets, lens-mount connectors). The company also produces the RYURO biochip interface unit for microfluidics research and distributes complementary third-party products in Japan for brands such as ARDENT CONCEPTS, Sullins, ELVEFLOW, E-tec, DAEEUN, Delphon Gel-Pak, and Mac-Eight.
Is S.E.R. a public or private company?
S.E.R. is a private company. It is classified as corporate owned and is currently operating.
When was S.E.R. founded?
S.E.R. was founded in 1984. It employs 11 to 50 people.
Where is S.E.R. based?
S.E.R. is headquartered in Tokyo, Japan, in the Asia region.
How does S.E.R. make money?
Two revenue lines are on record. Semiconductor Test Equipment Sales are the primary driver. The others are third-party Product Distribution.
Does S.E.R. have an API?
No public API is recorded for S.E.R..
What industry is S.E.R. in?
S.E.R.'s product category is Semiconductor Test Equipment. Its primary akta.pro industry code is HDAHAOAF, Sockets, IC Sockets & Test/Programming Interconnects, with a secondary code of HDAHAOAD, RF & Microwave Connectors and Coaxial Assemblies. Its NAICS code is 334417 and its SIC code is 3678.