Accretech
The Accretech / TSK UF 300 A is an automatic wafer prober for 8-inch wafers. The UF 300 A is configured as a fully automatic system with a gold plated or nickel chuck. The prober supports multi-die probing up to 256 DUTs and includes probe mark inspection and automatic alignment capabilities.[1][2][3]

Plate 01UF300A 300mm TSK/ACCRETECH Wafer Prober
Plate 02UF300A 300mm TSK/ACCRETECH Wafer Prober
Plate 03UF300 TSK/ACCRETECH Wafer Prober
Automatic wafer probers are used to contact every die on a wafer with precision probe needles so that electrical measurements can be made before the wafer is diced into individual chips.
The machine includes automatic probe-to-pad alignment, automatic needle height alignment, and probe mark inspection capabilities.[2]
The system supports simultaneous probing of up to 256 devices under test (DUTs) using multi-die probing.[2]
A Cognex 8200 board is employed for vision-based alignment and inspection tasks.[2]
Wafer probing is a test step performed after all front-end-of-line wafer fabrication processes are complete, before dicing and packaging.
The probed wafer is then sent to dicing saws which separate the individual die, followed by packaging and final test.
Automatic wafer probers are used for parametric testing, functional testing, and reliability assessment of semiconductor devices at the wafer level.
Source describes the unit as 2001 vintage.
Tools documented as functional equivalents — same process step and wafer size, from a different manufacturer. Each equivalence cites its source.
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The following facts about the UF 300 A Automatic Wafer are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
No publicly documented variants, configuration options, or revision breakpoints of the UF 300 A Automatic Wafer are on record.
Answerable by: an OEM product catalog or an engineer who ordered or specified the tool
The control-system platform and OS era of the UF 300 A Automatic Wafer are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the UF 300 A Automatic Wafer are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the UF 300 A Automatic Wafer is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No publicly documented compatible parts, consumables, or accessories for the UF 300 A Automatic Wafer are on record.
Answerable by: an OEM parts catalog or a service engineer
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Last updated Oct 3, 2026.
The Electroglas EG 4090 u+ is a prober for 8-inch wafers.
The Eagle ETS 200 T is a semiconductor test system for discrete device testing and wafer sort to final test applications.
The Semics Opus 3 is a prober for semiconductor wafers, supporting 8 and 12 inch wafer sizes.
Tokyo Electron Precio Octo is a prober with source-stated wafer sizes ranging from 4 inch to 8 inch.