Highly Accelerated Stress Test Chamber (HAST)
There is now an even greater need for highly accelerated stress tests of parts and materials, as electrical and electronic components have become denser. The Highly Accelerated Stress Test System (HAST Chamber) is designed primarily for bias testing using a set applied voltage and signal, but can be used to accelerated standard damp-heat style tests to shorten time-to-market.
Control functions can be selected from the standard two-modes of unsaturated control and wet-saturated control, and the three-modes of dry & wet-bulb temperature control, unsaturated control and wet-saturated control (M type). The M type chamber can be used for pressure cooker tests and unsaturated pressure cooker tests.
Two variants of this chamber exist - the small format semiconductor driven style and the larger format full product variety. Although it is quite large, the chamber conforms to the international standard IEC-60068-2-66. Our range of chambers also includes a long type with greater depth. In addition to the standard HAST Chamber, we also offer larger sizes than standard type.
Model Summary - Small Format
| Model | Temperature, humidity and pressure range | Inside/Outside dimensions(mm) |
|---|---|---|
| EHS-212 | ＋105.0 to ＋142.9℃ / 75 to 100％rh / 0.020 to 0.196MPa（Gauge） | φ294×L318 / W640×H1483×D850 |
| EHS-212M | ||
| EHS-212MD | φ294×L318×2 / W760×H1796×D1000 | |
| EHS-222 | φ394×L426 / W740×H1553×D1000 | |
| EHS-222M | ||
| EHS-222MD | φ394×L426×2 / W860×H1796×D1000 | |
| EHS-412 | ＋105.0 to ＋162.2℃ / 75 to 100％rh / 0.020 to 0.392MPa（Gauge） | φ294×L318 / W640×H1483×D850 |
| EHS-412M | ||
| EHS-412MD | φ294×L318×2 / W760×H1796×D1000 |
Full Specification: https://www.espec.co.jp/english/products/catalog/ehs.pdf
Model Summary - EHS-432(M)
| Model | EHS-432(M) * (M) Features dry & wet-bulb temperature control | |
|---|---|---|
| Dimensions | Test chamber internal dimensions | φ635×L728 mm (130 L) |
| External dimensions (W×H×D) | W800×H1575×D1260 mm | |
| Performance | Unsaturated control | Temperature control range 105.0 - 162.2°C |
| Humidity control range 75 - 100%rh | ||
| Pressure range 0.0196 - 0.392MPa（Gauge） | ||
| Heating and pressurization time (at RT.23°C): approximately 90 minutes | ||
| Wet-saturated control | Temperature control range 105.0 - 151.1°C | |
| Pressure range 0.0196 - 0.392MPa（Gauge） | ||
| Heating and pressurization time (at RT.23°C): approximately 90 minutes | ||
| Dry & wet-bulb temperature control (M type) | Temperature control range 105.0 - 162.2°C | |
| Humidity control range 75 - 95%rh | ||
| Pressure range 0.0196 - 0.392MPa（Gauge） | ||
| Heating and pressurization time (at RT.23°C): approximately 120 minutes | ||
The Large Highly Accelerated Stress Test System (HAST Chamber) (EHS-432) is a regulated class-1 pressure vessel. (* The long-type chamber EHS-432L is also a regulated class-1 pressure vessel.) This requires you to complete the necessary procedures for submitting a Notification of Installation and Application for Completion Inspection and Conducting a Completion Inspection to the Labor Standards Inspection Office in your jurisdiction 30 days prior to delivery of the chamber. Also, when operating and managing the chamber, you will need to appoint a chief worker for handling an ordinary class-1 pressure vessel.
Please note that when exporting the chamber overseas, the pressure vessel may be subject to restrictions due to the applicable standards. Please inquire for further details.
Model Summary - EHS-432(M)-L (Long Chamber Specification)
| Model | EHS-432(M)-L L： Long-type Chamber | |
|---|---|---|
| Dimensions | Test chamber internal dimensions | φ635×L928 mm (180 L) |
| External dimensions (W×H×D) | W800×H1575×D1460 mm | |
| Performance | Unsaturated control | Temperature control range 105.0 - 162.2°C |
| Humidity control range 75 - 100%rh | ||
| Pressure range 0.0196 - 0.392MPa（Gauge） | ||
| Heating and pressurization time (at RT.23°C): approximately 120 minutes | ||
| Wet-saturated control | Temperature control range 105.0 - 151.1°C | |
| Pressure range 0.0196 - 0.392MPa（Gauge） | ||
| Heating and pressurization time (at RT.23°C): approximately 120 minutes | ||
| Dry & wet-bulb temperature control (M type) | Temperature control range 105.0 - 162.2°C | |
| Humidity control range 75 - 95%rh | ||
| Pressure range 0.0196 - 0.392MPa（Gauge） | ||
| Heating and pressurization time (at RT.23°C): approximately 150 minutes | ||
The Large Highly Accelerated Stress Test System (HAST Chamber) (EHS-432) is a regulated class-1 pressure vessel. (* The long-type chamber EHS-432L is also a regulated class-1 pressure vessel.) This requires you to complete the necessary procedures for submitting a Notification of Installation and Application for Completion Inspection and Conducting a Completion Inspection to the Labor Standards Inspection Office in your jurisdiction 30 days prior to delivery of the chamber. Also, when operating and managing the chamber, you will need to appoint a chief worker for handling an ordinary class-1 pressure vessel.
Please note that when exporting the chamber overseas, the pressure vessel may be subject to restrictions due to the applicable standards. Please inquire for further details.
Additional Details - Large Format Chambers
The wide-range HAST test, whisker accelerated test, and air HAST test are adjusted according to their individual requirements. Please contact us.
We can supply specimen power supply terminals in accordance with the customer's requested specifications. Please contact us.
A request for the application of high voltage inside the chamber area may cause an electrical discharge to occur within the chamber. We will individually respond to each request after checking the specifications in detail. Please contact our sales representatives. Please note that we may not be able to meet this request if the creepage distance cannot be secured or for other reasons. We apologize in advance for the inconvenience.
Test Examples
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Specimen: Semiconductor packages Test conditions: 130°C/85%rh 100h |
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Specimen: LED Test conditions: 105°C/87%rh 250h |
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Specimen: Printed board Test conditions: 120°C/85%rh 2500h |
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Specimen: Printed board Test conditions: 110°C/85%rh 100h, 130°C/85%rh 400h |
