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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If chemical compositions for RDL fabrication
Photolithographic chemicals and materials for IC fabrication classify under 3818.
If other electrical machines wafer-level assemblies
More complete wafer-level assemblies may fall under electrical apparatus parts.
If polymer dielectric films without metallization
Non-conductive polymer sheets classify as plastic plates/films.
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Import Tips & Compliance
• Include RDL layer thickness and material specs (copper/PI); ESD-safe handling mandatory; declare as semiconductor WLP parts explicitly
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.
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.
Interposer Substrate for 2.5D IC Packaging
Silicon interposer substrate with through-silicon vias (TSV) for 2.5D heterogeneous integration of logic and memory ICs. Under HTS 8542.90.00.00 as parts of electronic integrated circuits, enabling high-bandwidth connections between multiple dies.