Chroma

7940

Grip Ring Holder or Wafer frame Chroma 7940 family

Research Quality: 20% complete

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Chroma7940

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Plate 01Chroma Model 7940 Wafer Chip Inspection System
Chroma ATE, Inc. (USA)Watch on YouTube

Wafer size

Grip Ring Holder or Wafer frame

Optics

25M Color CMOS Camera (top side)^[1]

What is it?

Chroma 7940 is a grip ring holder or wafer frame inspection system with dual 25M color CMOS cameras, multiple lighting options, auto focus, auto rotation, and edge detection.

What do the numbers mean?

Wafer handling4

Wafer size: Grip Ring Holder or Wafer frame^[1]
Inspection Area: Max 8" for 6" expanding wafer^[1]; Edge Detection (incomplete wafers)^[1]; Auto Cassette Load ports^[1]

Optics & imaging5

25M Color CMOS Camera (top side)^[1]; 25M Color CMOS Camera (bottom side)^[1]; Objective lens (programmable):^[1]
2X: 1.28um/pixel (Resolution)^[1]
5X: 0.51um/pixel (Resolution)^[1]

Control & software1

Industrial Computer (i7 / 32GB RAM / 2TB HD or better)^[1]

Accurate?

Configuration & options9

Chip Size: 1.2mm x 1.2mm - 3.1mm x 3.1 mm^[1]
DUT Package: VCSEL^[1]; Light Source:^[1]; LED Co-Axis Lighting^[1]; Ring Lighting^[1]; Back Lighting^[1]; Auto Focus (correct warpage)^[1]; Auto Rotation^[1]; Customized Algorithm Capability^[1]

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Where are the manuals?

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Not publicly documented

Field notes

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Not publicly documented

The following facts about the 7940 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 production dates or lifecycle milestones (introduction, end of production, EOL) for the 7940 are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the 7940 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 7940 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 7940 are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the 7940 is not on record.
Answerable by: an OEM datasheet or a fab qualification report