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YES

58 HMDS Vapor Prime

Provisional entry — research in progress

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YES58 HMDS Vapor Prime
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What it is

General reference — not yet source-verified

The YES 58 HMDS Vapor Prime is a vapor prime oven manufactured by Yield Engineering Systems (YES). Such ovens apply a vapor of hexamethyldisilazane (HMDS) to the surface of semiconductor wafers. HMDS acts as an adhesion promoter for photoresist layers applied in photolithography.

How it works

General reference — not yet source-verified

A vapor prime oven operates under a controlled vacuum and temperature environment. Wafers are placed in a chamber that is evacuated and then backfilled with HMDS vapor. The vapor reacts with the wafer surface to form a hydrophobic monolayer that improves resist adhesion. The process typically includes a dehydration bake before the prime step and a post-prime bake to stabilize the layer.

What do the numbers mean?

Configuration & options5

Manufacturer
YES[1]
Accurate?
Category
Thermal / Diffusion[1]
Accurate?
Equipment name
58 HMDS Vapor Prime Oven[2]
Accurate?
Make
Yes[2]
Accurate?
Model
58 HMDS[2]
Accurate?
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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 58 HMDS Vapor Prime 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 58 HMDS Vapor Prime are on record.

    Answerable by: OEM historical records or a trade-press announcement

  • No publicly documented variants, configuration options, or revision breakpoints of the 58 HMDS Vapor Prime 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 58 HMDS Vapor Prime 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 58 HMDS Vapor Prime are on record.

    Answerable by: a field service engineer, process engineer, or maintenance technician

  • The process node or technology generation of the 58 HMDS Vapor Prime is not on record.

    Answerable by: an OEM datasheet or a fab qualification report

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Sources & citations

Sources (2)Every fact above is drawn from these public sources
  1. [1]waferpedia.comwaferpedia.com
  2. [2]Equipment inventory listing
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Last updated Oct 3, 2026.

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