8486.40.00 - Machines and apparatus specified in note 11(C) to this chapter

Category 8486.40.00 encompasses a specific group of machines and apparatus that are essential for specialized processes within the semiconductor and electronics manufacturing industries, as further defined by Note 11(C) to Chapter 84. This classification focuses on machinery designed for applications that are distinct from the direct fabrication of semiconductor boules, wafers, devices, or integrated circuits, and also separate from the production of flat panel displays.

Unlike its sibling categories, which are dedicated to the primary manufacturing stages of semiconductor components and displays, 8486.40.00 covers machinery performing auxiliary or complementary functions. For instance, it does not include machines for growing semiconductor boules or wafers (8486.10.00), nor machines directly involved in creating semiconductor devices or integrated circuits (8486.20.00), nor those for flat panel display manufacturing (8486.30.00). Similarly, it is differentiated from the general category of parts and accessories (8486.90.00).

This broad category is further subdivided to provide more granular classification for specific types of equipment. The subcategories distinguish between machines used for the critical fabrication or repair of masks and reticles (8486.40.00.10), which are essential for photolithography processes. It also includes specialized machinery for the assembly of semiconductor devices or electronic integrated circuits (8486.40.00.20), covering steps like wire bonding or packaging. Finally, it encompasses machines dedicated to the precise handling and manipulation of delicate semiconductor materials and components, such as those for lifting, transferring, loading, or unloading boules, wafers, devices, circuits, and displays (8486.40.00.30).