Semiconductor ALD Precursor segmentation by application delineates the market into distinct end‑use groups that collectively drive demand. The logic device segment, encompassing high‑performance CPUs and GPUs, accounts for the largest share, roughly 35 % of total revenue, because advanced node scaling requires ultra‑thin, conformal films. Memory devices—including DRAM, NAND and emerging MRAM—represent about 30 % of the market, reflecting the need for precise dielectric and barrier layers in high‑density stacks. The power device category, covering SiC and GaN power transistors, contributes around 15 % as ALD enables reliable gate oxides for high‑voltage operation. Sensors, such as image sensors and MEMS, hold an estimated 12 % share, driven by the demand for uniform thin films that improve sensitivity and reliability. The residual other applications, including photonics and automotive ICs, make up the remaining 8 %. These proportions illustrate how each application segment underpins the overall Semiconductor ALD Precursor market size.