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ESPEC Europe GmbH
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Product details

The Espec Highly Accelerated Stress Test Chamber has been primarily developed for humidity resistance evaluation tests for electronic components. 

Highly-Accelerated Temperature and Humidity Stress is a critical part of the device package qualification process and is used to evaluate the reliability of non-hermetic packaged devices in humid environments.  The test employs severe conditions of temperature and humidity, to accelerate moisture penetration through the external protective plastic package, encapsulant or seal. 

The Espec HAST chamber series offers high performance, functionality and ease of use, and is compliant with the international IEC60068-2-66 standard & EIA/JEDEC test method A110 & 102C. Many convenient functions and safety features are included for bias testing.

Wet And Dry Bulb Temperature Control 

With ESPEC´s unique wet and dry bulb temperature control on the M type chamber, temperature and humidity are measured directly using a wet and dry bulb temperature sensor. This ensures accurate temperature and humidity control over the entire process, even during heat-up and cool-down. After testing is complete, both temperature and humidity are allowed to drop for a fixed period. In the hold process, the chamber is kept at a fixed environment until the door is opened and specimens are removed. This makes it possible to place a specimen in a constant temperature/humidity environment, and keep it from drying after returning to atmospheric pressure. 

Easy Program Setting

Program capacity of 10 patterns. Simple operation using up and down keys for program setting, as well as adjustment of temperature, humidity and time values.

Safe And Reliable Door

The system employs a button operated automatic door locking mechanism. It prevents the door from being opened while the test chamber is pressurized.

Automatic Humidifying Water Supply System

At the start of testing, the humidifying water needed for that test will be automatically taken from a water tank. A viewing point on the front allows the remaining amount of water in the tank to be checked at a glance.

Protection Measures for Specimens

Standard equipment includes a specimen power supply control terminal, which outputs contact signals to allow voltage and signals to be applied to the specimen during testing. When a problem occurs, specimens and the chamber are fully protected. Power supply to the specimen is halted and protection mechanisms for preventing overheating and boil-dry are activated. 

Model Comparison

Model Temp. range Hum. control Hum. range Pressure range Volume Inside dimensions in mm (WxHxD) Outside dimensions in mm (excl. projection)
EHS-212MD +105 to +142,9°C Yes 75-100% 0.020 to 0.196MPa (Gauge) 21L x 2 255 x 255 x 318 760 x 1796 x 1000
EHS-222MD +105 to +142,9°C Yes 75-100% 0.020 to 0.196MPa (Gauge) 51L x 2 355 x 355 x 426 860 x 1796 x 1000
EHS-412MD +105 to +162,2°C Yes 75-100% 0.020 to 0.392MPa (Gauge) 21L x 2 255 x 255 x 318 760 x 1796 x 1000
EHS-212 +105 to +142,9°C Yes 75-100% 0.020 to 0.196MPa (Gauge) 21L 255 x 255 x 318 640 x 1483 x 850
EHS-222 +105 to +142,9°C Yes 75-100% 0.020 to 0.196MPa (Gauge) 51L 355 x 355 x 426 740 x 1553 x 1000
EHS-412 +105 to +162,2°C Yes 75-100% 0.020 to 0.392MPa (Gauge) 21L 255 x 255 x 318 640 x 1483 x 850

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Data Protection Declaration and Revocation Notices

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