The type dimension of the Pneumatic Pumps for Semiconductor market is organized around four principal pump architectures: diaphragm, piston, vane, and rotary. Diaphragm pumps dominate the low‑pressure segment, offering superior chemical resistance and are favored in wet‑process stations, accounting for roughly 35% of total unit shipments. Piston pumps deliver higher flow rates and pressure stability, making them the preferred choice for wafer‑handling robots and lithography aligners, contributing about 30% of market revenue. Vane pumps provide compact form factors and moderate pressure capabilities, supporting auxiliary functions such as gas‑line purging and valve actuation, and represent approximately 20% of the market. Rotary pumps, characterized by high efficiency and continuous operation, are deployed in large‑scale chemical‑mechanical planarization (CMP) tools, capturing the remaining 15% of market value. Together, these types shape the overall market size by aligning pump performance characteristics with the stringent reliability and contamination‑control requirements of semiconductor fabrication.