Semitool
The Semitool 870 is a spin rinser/dryer. The Semitool 870 rinses substrates in DI water to 15 MΩ. The Semitool 870 dries substrates with heated nitrogen.[1][2]

The Semitool 870 is used for semiconductor wet processing and for rinsing and drying semiconductor wafers. The Semitool 870 is used on substrates loaded in 3 inch and 4 inch wafer boats.[1][3][2]
| Designation | Generation | Vintage | Changes | Source |
|---|---|---|---|---|
| 870 S | — | — | Dual Stack Spin Rinse Dryer used in semiconductor wet processing. | waferpedia.com[2] |
| 870-F | — | — | Affordable alternative to the S model, featuring a brush motor. | sitekprocess.com[3] |
| ST-870 | — | — | Classic version of the SRD with the traditional frame. | sitekprocess.com[3] |
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The following facts about the 870 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 870 are on record.
Answerable by: OEM historical records or a trade-press announcement
The control-system platform and OS era of the 870 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 870 are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the 870 is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No publicly documented compatible parts, consumables, or accessories for the 870 are on record.
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Last updated Oct 18, 2026.