Cohu
1688 ES
Provisional entry — research in progress
This page was generated automatically from cited public sources and hasn't completed the full research pass yet. Every specification shown carries its source; more detail is added as research completes.
The Cohu 1688 ES is a test handler manufactured by Cohu / Delta Design for semiconductor testing. The Cohu 1688 ES operates on 180-240 VAC.[1][2][3]
What it is
How it works
Where it fits in the process flow
General reference — not yet source-verifiedTest and probe equipment is used after device formation steps when parts or wafers are ready for electrical screening and probe or handler-based test.
Applications
What do the numbers mean?
Power & electrical1
Vintage & configurations
Documented models & variants
| Designation | Generation | Vintage | Changes | Source |
|---|---|---|---|---|
| 1688 ES Ambient | — | — | ambient-temperature variant of the 1688 ES test handler family | waferpedia.com[3] |
What does it need to run?
Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.
- Voltage180-240 vac[1]
Where are the manuals?
Generated from public-source data on file. Enter your email to access — nothing is published; details are routed privately.
Not publicly documented
Field notes
No research found yet — worked with this tool? Share what you know.
Frequently asked questions
Not publicly documented
The following facts about the 1688 ES are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
Fewer than 3 independently cited specifications for the 1688 ES are on record; the remainder await public documentation.
Answerable by: an OEM datasheet, a cleanroom equipment inventory, or an engineer who operated or installed it
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the 1688 ES are on record.
Answerable by: OEM historical records or a trade-press announcement
The control-system platform and OS era of the 1688 ES 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 1688 ES are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the 1688 ES is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No research found yet — worked with this tool? Share what you know.
Sources & citations
Sources (4)Every fact above is drawn from these public sources
- [1]Inventory photo
- [2]1688 ES — Cohu | Specs, Sourcing & Service | Waferpedia — waferpedia.comwaferpedia.com
- [3]waferpedia.com — waferpedia.comwaferpedia.com
- [4]Cohu 1688 ES family | Waferpedia — waferpedia.comwaferpedia.com
Last updated Oct 13, 2026.
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