What Testar Electronics does

Testar Electronics Corporation, established in 2007, is a Taiwan-headquartered professional testing foundry that operates as an OEM services provider for the optoelectronic and semiconductor industries. The company delivers chip probing, IC functional testing, die sorting with wafer reconstruction (RECON), automated visual inspection (AVI), and burn-in / lot-acceptance testing for LED, VCSEL, Photodiode, logic devices, MCUs, sensor controllers, and mixed-signal A/D and D/A converters. Testing is executed across two clean-room sites — a headquarters operation at 7F/8F, No. 99, Wenxin Rd., Guishan District, Taoyuan City, and an engineering/R&D facility in the Hsinchu Science-Based Industrial Park — using Chroma Group's proprietary automated test equipment, including the Chroma 58635 VCSEL prober, the 7940 AVI platform, the 3380/3650/3680 SOC/VLSI testers, the 3160 quad-site final-test handler, and the 58602/58604 burn-in systems. All work is orchestrated by Testar's in-house Manufacturing Execution System (MES), which supports CSV, SEMI 142, and STIF file formats and provides extranet links to customer IT systems.

The business model is B2B contract testing on a quote-based, multi-year engagement structure, with pricing dependent on wafer size, chip complexity, test volume, and required test conditions. Customer acquisition is sales-led, combining direct outreach, a website-based Request-For-Quote workflow, and email/phone contact, while ongoing client development leverages the parent's installed base inside the semiconductor and optoelectronics supply chains. As a wholly affiliated company of Chroma Group — the world's leading automatic test instrument supplier with own-brand products — Testar relies on the parent's R&D bench, instrument manufacturing, and rapid-response maintenance teams, but no venture or external funding, no public revenue, no named customer logos, no M&A activity, and no disclosed certifications are present in the available data. The firm currently markets only to Asia, with Taiwan as the primary served geography, and shows no public evidence of international expansion or executive leadership change beyond the 2007 founding.

Name

Testar Electronics

Legal name

Testar Electronics Corporation

Website

https://www.testar.com.tw

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

251–500 employees

Short description

Testar Electronics Corporation, founded in 2007 and headquartered in Taoyuan, Taiwan, is a professional B2B testing foundry operating as an affiliate of Chroma Group. It provides OEM optoelectronic (LED, VCSEL, Photodiode) and semiconductor chip-testing services — including wafer probing, IC functional testing, die sorting, automated visual inspection, and burn-in — to manufacturers serving consumer, communications, and 3D-sensing applications.

Ownership category

akta.pro rank

Product category

Semiconductor Testing Services

NAICS

Testing Laboratories and Services (541380), Testing Laboratories and Services (54138)

SIC

Services-Testing Laboratories (8734)

akta.pro primary industry

Test Services (Wafer Sort, Final Test, Burn-In) (HDAHADAD)

Keywords

• Semiconductor testing services
• Optoelectronic chip testing
• VCSEL probing services
• Wafer visual inspection
• Burn-in reliability testing

Headquarters

HQ city

Taoyüan

HQ country

Taiwan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Optoelectronic Testing Services: Testing services for LED, Photodiode, and VCSEL chips including chip probing, die sorting, wafer reconstruction, automatic visual inspection, and burn-in testing. These are recurring contract manufacturing services billed based on testing volume and complexity.
2. Semiconductor Testing Services: Semiconductor testing including wafer probing and final testing for logic devices, MCU, interface controller IC, sensor controller, A/D and D/A converters used in consumer electronics and communication devices. Services include test program development, test program conversion, test time reduction, and DFT consultant services.
3. Engineering Services: Supporting engineering services including test program development, test program conversion, test time reduction, DFT consultant services, and multi-site testing development. These services complement core testing operations and help customers achieve faster time to market.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Testar Electronics is a professional OEM testing services provider (testing foundry) that delivers optoelectronic and semiconductor chip testing services. Core offerings include chip probing, IC functional testing, die sorting/wafer reconstruction, automatic visual inspection, and burn-in testing for LED, Photodiode, VCSEL, and various semiconductor devices (logic, MCU, interface controllers, sensor controllers, AD/DA converters). All services are performed in clean room facilities using Chroma Group's advanced automated testing systems and integrated with a proprietary MES system.

Product overview

Testar Electronics is a professional testing services provider offering a comprehensive portfolio of optoelectronic and semiconductor testing solutions. The company provides two main service categories: Optoelectronic Testing (LED, VCSEL, Photodiode) covering chip probing, die sorting/wafer reconstruction, automatic visual inspection, and burn-in; and Semiconductor Testing covering wafer sort (chip probing) and IC final functional testing. The testing services utilize Chroma Group's advanced test equipment including VCSEL probing stations (Chroma 58635), AOI systems (Chroma 7940), SOC test systems (Chroma 3680, 3650, 3380), and burn-in systems (Chroma 58604, 58602). All services are supported by an MES system for real-time production monitoring and data management.

Differentiator

Problem solved

Functional benefit

Products and services

• Optoelectronic Testing Services Comprehensive testing services for LED, Photodiode, and VCSEL components including chip probing, die sorting/wafer reconstruction, automatic visual inspection, and burn-in testing. Offered to manufacturers of optoelectronic components used in consumer products, mobile devices, gesture recognition, 3D sensing, proximity sensing, and optical communication applications.
• Semiconductor Testing Services Semiconductor testing services including wafer chip probing (wafer sort) and IC functional testing (final test) covering logic devices, MCU, interface controller IC, sensor controller, A/D and D/A converters for consumer, analog, digital/mixed mode, LCD T-con/PMIC, CIS/CCD, and RF devices.
• Optoelectronic Chip Probing Service (VCSEL/LED/Photodiode) Full turnkey electro-optical measurement service for VCSEL, LED and Photodiode chips covering LIV (Light intensity, Current, Voltage), near field, and far field testing on up to 6-inch wafers, with wide range precise temperature control via TEC controller.
• Die Sorting and Wafer Reconstruction (RECON) Service Automated die sorting and wafer reconstruction service supporting wafers up to 12 inches and chip sizes up to 7000μm x 7000μm, with real-time data management and flexible output forms including metal frame, grip ring, GEL PAK, and WAFFLE PAK.
• Automatic Visual Inspection (AVI) Service Automated post-diced wafer chip inspection service inspecting both top and bottom views simultaneously with minimum detectable defect size of 1.5μm and throughput up to 15 msec/chip, supporting up to 8-inch wafers with auto alignment and real-time data output.
• Optoelectronic Burn-in / Lot Acceptance Testing Service Burn-in and reliability screening service for VCSEL and Photodiode chips including high temperature operating life test (HTOL), wet and high temperature operating life test (WHTOL), and wire pull test (WPT). Supports low power chip (Chroma 58604) and high power chip (Chroma 58602) configurations including COB/TO-Can assembly package.
• Semiconductor Chip Probing (Wafer Sort) Service Wafer-level chip probing (wafer sort) service using Chroma 3680 Advanced SoC Test System (up to 2048 sites parallel test, 2048 digital I/O pins, 1 Gbps data rate) and Chroma 3650 SoC Test System (50/100 MHz clock rate, up to 640 digital I/O pins, scan features up to 2G depth).
• Semiconductor IC Functional Testing (Final Test) Service IC final test (functional test) service using Chroma 3380 VLSI Test System (up to 1024 sites parallel testing, 1024 I/O pins, AD/DA test, SCAN test option, ALPG embedded memory test option) and Chroma 3160 Quad Site Final Test Handler (flexible DUT configuration, intelligent socket IC leftover check, yield monitoring).
• Engineering Services (Test Program Development & DFT Consulting) Supporting engineering services including test program development, test program conversion (from J750, D10, S50/100, E320, SC312, V7, TRI-6036 platforms), test time reduction, DFT consultant services, and multi-site testing development to help customers achieve faster time to market.

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• Chroma Group (致茂集團)coreStrategic or Co-development Partner · 1 January 2007Testar Electronics Corporation is an affiliated company of Chroma Group, established in 2007 as Chroma's professional testing services subsidiary. Chroma Group is the world's leading automatic test instrument and equipment supplier with own-brand products. Testar leverages Chroma's R&D resources, world-class engineers specialized in electrical and optical test, rapid response maintenance team, and high flexibility on capacity expansion. Chroma provides advanced testing equipment including VCSEL probing stations, AVI systems, and SOC/VLSI test systems that enable Testar's comprehensive testing services.

Scale indicators2 records

Recent moves4 records

Expansion highlights3 records

Broad incumbents

• ASE Technology Holding: World's largest OSAT, offering assembly, packaging, and test services (including wafer sort and final test). Overlaps with Testar's IC test offering as part of a much broader back-end portfolio serving global semiconductor customers.
• Amkor Technology: Global OSAT leader offering packaging and test services across regions. While broader in scope and geography, its OSAT test services for advanced ICs overlap with Testar's semiconductor IC final test value proposition.

Direct peers

• Ardentec: Taiwan-headquartered IC test house specializing in wafer probing and final test for memory and logic ICs. Comparable contract testing services model targeting semiconductor manufacturers in the same Taiwan cluster.
• Powertech Technology (PTI): Major Taiwan-based OSAT with substantial wafer sort and final test capacity for logic and memory devices. Comparable in service scope, geographic focus on Taiwan, and customer base of semiconductor manufacturers.
• ChipMOS Technologies: Taiwan-listed OSAT providing semiconductor testing (wafer sort, final test) along with assembly and packaging. Directly comparable service portfolio and customer overlap with Testar's semiconductor testing segment.
• Sigurd Microelectronics: Taiwan-based IC test services provider with strong presence in wafer sort and final test for RF, analog, and mixed-signal devices. Competes with Testar for the same wafer probing and final test engagements from Taiwanese semi manufacturers.
• King Yuan Electronics (KYEC): Largest pure-play IC test house in Taiwan, offering wafer sort, final test, and burn-in for logic, mixed-signal, and memory ICs. Directly comparable as an outsourced test services provider serving semiconductor manufacturers in the same Taiwan ecosystem as Testar.

Regional players

• JCET (Jiangsu Changjiang Electronics Technology): China-based OSAT providing semiconductor packaging and test services including wafer sort and final test. Operates a comparable back-end services model but primarily serves China-based customers, making it a regional rather than direct Taiwan competitor.
• Tongfu Microelectronics: China-based OSAT with IC packaging and testing capabilities, including wafer probe and final test. Comparable service offering to Testar but geographically concentrated in mainland China, serving Chinese fabless and IDM customers.

Others

• Chroma ATE (Chroma Group): Parent entity and global supplier of automated test equipment (ATE) used in semiconductor, optoelectronic, and electronic component testing. An adjacent equipment-vendor peer that supplies the platforms Testar deploys, and a partner/parent rather than a competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/testar-electronics-corporation

Revenue estimate

Valuation estimate

Number of profiles

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 Testar Electronics