PDF Solutions, Inc. provides infrastructure technologies and services to improve the performance of integrated circuits for the semiconductor industry. It offers manufacturing process solutions that consist of process research and development, process integration and yield ramp, and volume manufacturing solutions; design-for-manufacturability (DFM) solutions, such as logic DFM solutions, circuit level DFM solutions, and memory DFM solutions; and characterization vehicle (CV) infrastructure, which include CV test chips, pdCV analysis software, and pdFasTest electrical wafer test system. It also provides Yield Ramp Simulator software that analyzes an integrated chip (IC) design to compute its systematic and random yield loss; Circuit Surfer software, which estimates the parametric performance yield and manufacturability of analog/mixed-signal/radio frequency blocks in RF transmission, PLLs/DLLs, and logic critical paths; pDfx environment that improves the manufacturability of ICs; dataPOWER YMS platform, which collects yield data and allows product engineers to identify and analyze production yield issues; and Maestria FDC Software that provides fault detection and classification capabilities to identify sources of process variations and manufacturing excursions by monitoring equipment parameters. PDF Solutions sells its technologies and services through direct sales force and strategic alliances to integrated device manufacturers, fabless semiconductor design companies, and foundries in Japan, Europe, and North America. The company was founded in 1992 and is headquartered in San Jose, California.