Silicon Die Spacer Wafer
Thin silicon wafer with through-holes used as spacers in 3D IC stacking for precise die-to-die alignment. Classified under HTS 8542.90.00.00 as parts of electronic integrated circuits for vertical integration packaging.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If silicon wafers for chemical processing
Unprocessed silicon wafers for fabrication classify under semiconductor media.
If other semiconductor devices wafers
Processed wafers with devices classify under semiconductor devices.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Total thickness variation specs; plasma clean certification; handle with wafer shippers
Related Products under HTS 8542.90.00.00
STM32F407VGT6 Microcontroller IC Package
This is a replacement or spare integrated circuit package containing the STM32F407VGT6 ARM Cortex-M4 microcontroller die, used in embedded systems. It qualifies as parts of electronic integrated circuits under HTS 8542.90.00.00 because it is a component specifically for assembly into completed ICs, not a finished functional circuit.
TSOP-48 Memory IC Lead Frame Assembly
Pre-formed lead frame assembly in TSOP-48 package configuration for flash memory integrated circuits, providing electrical connections for the die. Falls under HTS 8542.90.00.00 as it is a specialized part of electronic integrated circuits used in the packaging process before die attachment.
QFN-64 Package Substrate with Solder Balls
Organic substrate in QFN-64 format pre-attached with BGA-style solder balls for quad flat no-lead IC packaging. Classified under HTS 8542.90.00.00 as parts of electronic integrated circuits, serving as the interconnect base for IC die bonding and ball grid array connections.
BGA Heat Spreader Lid for Processor ICs
Precision-machined copper or aluminum lid assembly with thermal interface material for BGA integrated circuit packages. Recognized under HTS 8542.90.00.00 as a part of electronic integrated circuits, providing heat dissipation for high-power CPU/GPU dies.
Wafer Level Chip Scale Package (WLCSP) Redistribution Layer
Thin-film redistribution layer substrate for WLCSP technology, rerouting die I/O pads to peripheral solder bumps. Falls under HTS 8542.90.00.00 as specialized parts of electronic integrated circuits enabling advanced fan-out packaging at wafer level.
Flip-Chip Bumps Preform Array for GPU ICs
Solder micro-bump preform array on carrier film for flip-chip bonding of GPU integrated circuits. Classified as parts of electronic integrated circuits under HTS 8542.90.00.00, used in high-density 3D IC stacking and interconnect processes.