Espec
EHS-412MD
The Espec EHS-412MD is a large highly accelerated stress test system. The Espec EHS-412MD has an interior size of φ294×L318 mm ×2stage. The Espec EHS-412MD operates over +105.0°C to +162.2°C, 75%rh to 100%rh, and 0.019 to 0.389 MPa (gauge).[1]
What is it?
What can it run?
Process applications and technology nodes documented for this tool.
- Highly accelerated stress testing
What do the numbers mean?
Power & electrical1
Vacuum & pumping3
Control & software3
- Control mode
- Unsaturated or saturated humidity control; multi-mode 'M' system controls humidity via wet bulb/dry bulb during heat-up and cool-down[2]
Dimensions & facilities3
Configuration & options10
Vintage & configurations
Documented models & variants
| Designation | Generation | Vintage | Changes | Source |
|---|---|---|---|---|
| EHS-412(M) | — | — | Listed as the related single-stage model in the same lineup; the EHS-412MD is the two-stage version with the same stated temperature, humidity, and pressure range. | espec.co.jp[1] |
| EHS-432(M) | — | — | Listed in the larger-size highly accelerated stress test system lineup. | espec.co.jp[1] |
| EHS-212(M) | — | — | Listed in the standard highly accelerated stress test system lineup. | espec.co.jp[1] |
| EHS-222(M) | — | — | Listed in the standard highly accelerated stress test system lineup. | espec.co.jp[1] |
| EHS-212MD | — | — | Two-stage variant with 294 x 318 mm interior dimensions. | espec.co.jp[1] |
| EHS-222MD | — | — | Two-stage variant with 394 x 426 mm interior dimensions. | espec.co.jp[1] |
What does it need to run?
Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.
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
What is the interior volume of each chamber?
Each chamber has an interior volume of 21 liters (0.64 cubic feet).[2][3]
To which standards does the EHS-412MD conform?
The EHS-412MD fully conforms to EIA/JEDEC test methods A110 and 102C.[2]
What is the pressure range of the chamber?
The pressure range is 0.02 to 0.392 megapascals gauge (0 to 57 psig).[2]
Does the chamber have specimen power terminals?
Yes, the EHS-412MD includes specimen power terminals that allow power-up of specimens during test.[2]
Not publicly documented
The following facts about the EHS-412MD 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 EHS-412MD are on record.
Answerable by: OEM historical records or a trade-press announcement
The control-system platform and OS era of the EHS-412MD 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 EHS-412MD are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the EHS-412MD is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No publicly documented compatible parts, consumables, or accessories for the EHS-412MD are on record.
Answerable by: an OEM parts catalog or a service engineer
No research found yet — worked with this tool? Share what you know.
Sources & citations
Sources (3)Every fact above is drawn from these public sources
- [1]espec.co.jp — espec.co.jpespec.co.jp
- [2]espec.com — espec.comespec.com
- [3]emin.asia — emin.asiaemin.asia
Last updated Oct 11, 2026.
