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Weighing machinery (excluding balances of a sensitivity of 5 cg or better), including weight operated counting or checking machines; weighing machine weights of all kinds. > Other appliances: > Other > Other
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Subheadings
Products classified under Tariff item 8424.89
backside Wafer Grind Coolant Dispenser
A liquid dispenser projecting coolant during temporary bond/debond backside wafer grinding for 3D packaging. It is a semiconductor-specific liquid projecting appliance, classified under 8424.89.00 as an 'other appliance' for projecting liquids. This tool ensures thermal control during precision wafer processing.
8424.89.00Conformal Coating Spray Booth for Printed Circuit Protection
An enclosed mechanical spray chamber that evenly disperses protective conformal coatings (urethane/acrylic) over assembled printed circuit boards for moisture and dust resistance. It features HVLP precision spraying optimized for uniform coverage, making it essential for protecting electronic assemblies. This appliance falls under tariff item 8424.89.00 as an 'other appliance' for projecting liquids, not elsewhere specified.
8424.89.00Crystal Boule Grinder
A precision grinder that disperses diamond slurry or abrasive liquids to grind semiconductor crystal boules to exact diameter and flat specifications. It is classified under 8424.89.00 as an 'other appliance' for projecting liquids, though it may also be considered a machine tool. This appliance is essential for semiconductor wafer production.
8424.89.00Czochralski Crystal Puller
A mechanical appliance used to grow monocrystalline silicon boules by pulling a seed crystal from molten silicon in the Czochralski process. It projects and controls molten material precisely for semiconductor wafer production. This appliance is classified under 8424.89.00 as an 'other appliance' for projecting liquids, though it is primarily a crystal growth machine.
8424.89.00Developing Solution Spray Processor for Printed Circuits
An inline mechanical spray processor that disperses alkaline developing solutions to selectively remove unexposed photoresist from exposed printed circuit panels after UV imaging. It is essential for pattern transfer in PCB manufacturing, ensuring precise circuit traces. This appliance is classified under 8424.89.00 as an 'other appliance' for projecting liquids.
8424.89.00Dicing Street Coolant Nozzle Array
A precision nozzle system projecting coolant along dicing streets during wafer sawing to prevent thermal damage. It is a semiconductor-specific liquid projecting appliance, classified under 8424.89.00 as an 'other appliance' for projecting liquids. This tool is critical for maintaining wafer integrity during dicing.
8424.89.00Edge Bead Removal Spray Tool
A specialized nozzle array projecting solvent sprays to remove excess photoresist from wafer edges, preventing contamination. It is classified under 8424.89.00 as an 'other appliance' for projecting liquids, specifically for semiconductor processing. This tool ensures clean wafer edges for subsequent fabrication steps.
8424.89.00Etchant Spray Etching Machine for PCB Copper Layers
A high-velocity mechanical spray system that projects ferric chloride or ammonium persulfate etchants to remove unwanted copper from photoresist-patterned printed circuit boards. It includes etchant recirculation for production efficiency, making it a key tool in PCB fabrication. This appliance is classified under 8424.89.00 as an 'other appliance' for projecting liquids.
8424.89.00Float Zone Crystal Grower
A specialized machine using zone melting to produce high-purity silicon crystals by projecting and manipulating molten zones along a polycrystalline rod. It is classified under 8424.89.00 as an 'other appliance' for projecting liquids, though it is primarily a crystal growth machine. This appliance is essential for semiconductor-grade silicon production.
8424.89.00Flux Spraying Machine for SMT Printed Circuit Assembly
An automated mechanical sprayer that projects selective flux onto PCB pads prior to surface-mount soldering, ensuring reliable joints in high-volume assembly. It features programmable spray patterns optimized for printed circuit assemblies. This appliance is classified under 8424.89.00 as an 'other appliance' for projecting liquids.
8424.89.00Hydrofluoric Acid Vapor Etch Sprayer
A controlled vapor sprayer projecting HF vapor for native oxide removal from silicon wafers before processing. It is classified under 8424.89.00 as an 'other appliance' for projecting liquids, specifically for semiconductor fabrication. This tool ensures clean wafer surfaces for subsequent steps.
8424.89.00Pallet Spray Conveyor for Printed Circuit Panel Processing
An automated conveyorized mechanical spray platform that transports PCB panels through multiple liquid processing stations (developer, etch, strip) using precision spray manifolds. It is an integrated system for high-throughput printed circuit processing. This appliance is classified under 8424.89.00 as an 'other appliance' for projecting liquids.
8424.89.00Photoresist Spray Coater for PCB Manufacturing
A mechanical appliance that precisely sprays liquid photoresist onto PCB substrates to create uniform photoresist layers essential for the photolithography process in printed circuit manufacturing. It is designed solely for this purpose, ensuring consistent coating thickness. This appliance is classified under 8424.89.00 as an 'other appliance' for projecting liquids.
8424.89.00Solder Mask Spray Applicator for Printed Circuit Boards
A specialized spray system for uniform application of liquid solder mask onto bare PCBs, protecting copper traces during assembly. It features precision nozzles for micron-level control, used principally in printed circuit assembly. This appliance is classified under 8424.89.00 as an 'other appliance' for projecting liquids.
8424.89.00Underfill Dispensing Sprayer for BGA Printed Circuit Packages
A precision jetting system for spraying capillary underfill materials beneath BGA chips on printed circuit boards, preventing delamination during reflow. It is a mechanical projecting appliance designed principally for advanced PCB assembly. This appliance is classified under 8424.89.00 as an 'other appliance' for projecting liquids.