Wafer Die Sorting Service

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Through our global network of testing experts and analytical equipment including chromatography (HPLC, GC, GC/MS) and atomic absorption spectroscopy (AAS, GFA, FIAS), Our goal is to provide test services as efficiently as possible to maximize our customers' profits. For more information about our services, contact one of our experts today.

Note: this service is for Research Use Only and Not intended for clinical use.

To complement our wafer dicing service, die sorting service is offered as an independent service or bundled solution. Wafer die sorting refers to the critical stage in semiconductor backend manufacturing where individual dies, previously formed on a semiconductor wafer, are identified, tested, and sorted according to quality grade and functional specifications. After wafer dicing separates the wafer into individual chips, sorting ensures only known-good dies (KGD) advance into downstream packaging and assembly processes. This step is essential for improving yield, reducing failure risks, and optimizing cost efficiency. With the rapid evolution of chip complexity, miniaturization, and functionality, die sorting has become an advanced, automated quality-control solution. At Alfa Chemistry, our wafer die sorting service is designed to transform diced wafers into high-value, quality-ranked dies ready for assembly or shipment. Whether supporting mass production for consumer electronics or prototype trials for emerging chip technologies, our solutions guarantee precision, consistency, and transparency at every step.

Our comprehensive sorting solution includes:

Automated Wafer Die Sorting

Using high-speed automated die sorting machines, we ensure low-damage handling and ESD-safe conditions to maintain highest yield and reliability. We sort dies based on the following criteria:

Electrical functionality from wafer-level test data
Visual and structural quality (chip defects, cracks, contamination, chipping)
Binning by die grade, functionality, device type, or performance level
Custom sorting for special packaging categories (bare die for WLP, flip-chip ready dies, etc.)

Custom Output Media and Packaging

Customers may specify output format based on downstream needs:

Gel & sticky tape carrier
Waffle tray or JEDEC tray
Tape-and-reel packaging
Bare die wafer ring for advanced packaging

Traceability and Data Reporting

Each die can be traced from wafer lot to packaging location through advanced MES data tracking systems. We provide digital output reports summarizing:

Pass / fail rates
Yield distribution by bin
Defect category statistics
Serial and wafer coordinate mapping

Automated sorting platforms

Our facilities run industry-leading automated sorting platforms capable of high throughput with micron-level alignment accuracy. Features include:

Automated optical inspection
Defect detection and reporting
E-map integration with wafer test results
Pick-and-place with vacuum or collet tool depending on die fragility

Our equipment supports a broad range of wafer types and formats, from conventional silicon to compound semiconductors such as SiC, GaAs, and GaN. Advanced contamination control protocols and ESD-safe work environments ensure that every die is handled under strict protection standards.

How wafer die sorting helps you

Improves Yield & Reduces Waste: By filtering out defective dies before packaging, manufacturers avoid costly assembly waste and reduce resource consumption.
Enables Market-Flexible Product Strategy: Performance binning allows one wafer to feed multiple product tiers, from premium devices to cost-optimized versions, expanding revenue opportunity.
Guarantees End Product Reliability: Only defect-free dies move forward, supporting industries where failure is not an option, such as automotive ADAS, aerospace, and medical implants.
Accelerates Manufacturing Cycles: With dies pre-sorted and packaged into trays or reels, assembly lines can begin immediately, shortening time-to-market.

As semiconductor devices become smaller, more powerful, and more integrated, backend processing steps such as wafer die sorting become mission-critical. Alfa Chemistry provides full-stack wafer dicing and dies sorting services, integrating cutting-edge equipment, dedicated engineering support, and global capacity to help customers scale efficiently and reliably. With our commitment to precision, transparency, and speed, we ensure each die you receive is not only functional—but ready to help shape the next generation of semiconductor innovation.

For partnership, inquiries, or engineering guidance—our team is ready to support your journey.

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