PDF Solutions
PDF Solutions is a United States-based provider of software, engineering services, hardware, and semiconductor intellectual property for integrated-circuit manufacturing, testing, and analytics.
Last updated August 26, 2026
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Overview
PDF Solutions, Inc. is an American multinational technology company headquartered in Santa Clara, California. It supplies software, engineering services, hardware, and semiconductor-related intellectual property intended to improve the manufacture and testing of integrated circuits and systems-on-chip. Its solutions are used to collect, organize, connect, and analyze large volumes of data generated across semiconductor design, wafer fabrication, assembly, packaging, testing, and equipment operations. The company was founded in 1991 by John Kibarian and Kimon Michaels. Its early focus developed around process-yield improvement and the use of manufacturing data to identify, diagnose, and reduce defects in semiconductor production. As chip manufacturing became more complex and geographically distributed, PDF Solutions expanded its role from specialized engineering work into a broader combination of software platforms, data infrastructure, analytics, and semiconductor intellectual property. These capabilities are intended to help customers detect sources of variation, accelerate production learning, improve manufacturing yields, and manage the quality and reliability of devices. Kibarian became chief executive officer in 2000. The company completed its initial public offering in July 2001 and trades on Nasdaq under the symbol PDFS. Over time, PDF Solutions broadened its capabilities through acquisitions and asset purchases. It acquired Si Automation in 2006, purchased assets from StreamMosaic in 2019, acquired Cimetrix Incorporated in 2020, and acquired Lantern Machinery Analytics in 2023. These transactions strengthened the company's position in manufacturing automation, equipment connectivity, data management, and industrial analytics. PDF Solutions serves semiconductor foundries, integrated-device manufacturers, fabless semiconductor companies, semiconductor equipment manufacturers, and other participants in the electronics manufacturing ecosystem. The company has stated that it serves more than 500 customers in 36 countries, with customers including TSMC, Intel, Analog Devices, and Qualcomm. Its technology is relevant to chips used in smartphones, computers, communications equipment, industrial systems, and advanced driver-assistance systems in automobiles. The company's positioning combines domain-specific semiconductor expertise with software and analytics. Rather than operating as a general-purpose enterprise software vendor, PDF Solutions focuses on the specialized data, process-control, test, and yield challenges of semiconductor production. Its business therefore sits at the intersection of electronic design automation, computer-aided manufacturing, industrial software, semiconductor test, and manufacturing intelligence. The company remains active as a publicly traded technology supplier, although detailed current product names, management rosters, financial results, and corporate website information are not established by the supplied reference material.
History
PDF Solutions was established in 1991 by John Kibarian and Kimon Michaels in the United States. The company emerged from the semiconductor industry's growing need to use production data more systematically. Semiconductor manufacturing generates information at many stages, including wafer processing, inspection, test, equipment operation, and quality control. PDF Solutions developed software, engineering methods, and related technologies intended to connect those data sources and help manufacturers understand the causes of defects and yield loss. The company expanded from an engineering and process-improvement specialist into a broader supplier of semiconductor manufacturing intelligence. Its activities came to include data management, yield analysis, process monitoring, test analytics, equipment connectivity, factory automation, and semiconductor intellectual property. These capabilities allow customers to examine relationships among manufacturing steps and to use production information to improve process performance, identify anomalies, and support the introduction of new devices. John Kibarian became chief executive officer in 2000. In July 2001, PDF Solutions became a publicly traded company through a Nasdaq listing under the ticker PDFS. Public ownership provided a broader platform for the company's expansion while retaining its focus on semiconductor manufacturing and testing. Acquisitions became an important part of the company's development. In October 2006, PDF Solutions bought Si Automation for $26.6 million in cash. The transaction broadened the company's automation-related capabilities. In 2019, PDF Solutions purchased assets from StreamMosaic. In November 2020, it acquired Cimetrix Incorporated, a company associated with semiconductor equipment connectivity and factory-automation software. In July 2023, PDF Solutions acquired Lantern Machinery Analytics, adding further equipment and machinery analytics capabilities. PDF Solutions' customer base spans semiconductor foundries, semiconductor design companies, integrated-device manufacturers, and equipment makers. The company has described its reach as more than 500 customers across 36 countries. Publicly cited customers include TSMC, Intel, Analog Devices, and Qualcomm. Its technologies support production and testing of integrated circuits and systems-on-chip used in consumer electronics, computing, communications, and automotive applications, including advanced driver-assistance systems. The company's historical development reflects a wider change in semiconductor production: as devices became smaller and manufacturing processes more complicated, yield improvement increasingly depended on combining engineering knowledge with large-scale data collection and analysis. PDF Solutions positioned itself around that need, offering specialized tools and services rather than competing primarily as a general-purpose software company. The supplied reference material confirms that the company remains active and publicly listed, but does not provide sufficient detail for a complete current product catalog, current board roster, or recent financial overview.
- 2023
Lantern Machinery Analytics acquisition
[1]The company acquired Lantern Machinery Analytics in July 2023.
- 2020
Cimetrix acquisition
[1]PDF Solutions acquired Cimetrix Incorporated in November 2020.
- 2019
StreamMosaic asset purchase
[1]PDF Solutions purchased assets from StreamMosaic.
- 2006
Si Automation acquisition
[1]The company acquired Si Automation for $26.6 million in cash.
- 2001
Initial public offering
[1]PDF Solutions went public in July 2001 and began trading on Nasdaq under the symbol PDFS.
- 2000
John Kibarian becomes CEO
[1]John Kibarian was appointed chief executive officer.
- 1991
Company founded
[1]John Kibarian and Kimon Michaels co-founded PDF Solutions to serve semiconductor manufacturing and process-improvement needs.
Products and positioning
A specialized semiconductor manufacturing intelligence and analytics provider combining software, engineering expertise, hardware, and semiconductor intellectual property to improve yield, quality, reliability, and operational visibility.
Software
Semiconductor manufacturing data management
Software and associated capabilities for collecting, organizing, linking, and managing data produced during semiconductor design, fabrication, assembly, and test. These systems provide a foundation for analyzing manufacturing performance across multiple process steps and facilities.
Analytics software and engineering services
Yield and process analytics
Analytics and engineering services designed to identify defect patterns, process variation, and sources of yield loss in integrated-circuit manufacturing. The offering supports process diagnosis, production learning, quality improvement, and the transition of new devices into volume manufacturing.
Industrial software
Equipment connectivity and factory automation
Software capabilities that connect semiconductor manufacturing equipment with factory systems and data platforms. This area supports automated information exchange, equipment monitoring, manufacturing control, and analytics across semiconductor production environments.
Hardware and semiconductor IP
Semiconductor test and intellectual property
Hardware and semiconductor-based intellectual property used in the testing and evaluation of integrated circuits and systems-on-chip. These technologies complement PDF Solutions' software and services by extending data collection and analysis into the test environment.
Brand decisions
2023
Acquire Lantern Machinery AnalyticsM&ABackground
PDF Solutions pursued additional machinery and equipment analytics capabilities for industrial and semiconductor manufacturing applications.
Action taken
The company acquired Lantern Machinery Analytics in July 2023.
Aftermath
The acquisition expanded PDF Solutions' capabilities in machinery analytics; the supplied source does not provide further integration or financial details.
2020
Acquire Cimetrix IncorporatedM&ABackground
The acquisition was aligned with PDF Solutions' interest in semiconductor equipment connectivity and factory automation.
Action taken
PDF Solutions acquired Cimetrix Incorporated in November 2020.
Aftermath
The transaction strengthened the company's equipment-connectivity and manufacturing-automation portfolio.
2019
Purchase StreamMosaic assetsM&ABackground
PDF Solutions continued to broaden its data and analytics capabilities through selective asset purchases.
Action taken
The company purchased assets from StreamMosaic in 2019.
Aftermath
The supplied source does not specify the purchase price or provide a detailed description of the assets' subsequent integration.
2006
Acquire Si AutomationM&ABackground
PDF Solutions sought to expand its semiconductor manufacturing automation and related software capabilities.
Action taken
The company purchased Si Automation in October 2006 for $26.6 million in cash.
Aftermath
The acquisition became part of PDF Solutions' broader expansion across semiconductor manufacturing software and automation.
Cash acquisition price. $26.6 million (October 2006)
Sources1 sources
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