Skip to main content

Thermal Stress

Stress Master 2 - HALT & HASS Applications

The StressMaster-2 is a purpose designed Thermal Stress Screening chamber, featuring powerful heating and cooling systems. High, evenly distributed, airflow ensures excellent thermal coupling to the products, while keeping fan power low for economical running. The airflow can be further enhanced for small products using the built-in air deflectors.
Temperature control directly from the product can be used to further increase ramp rates by maximising the air to product temperature difference. The maximum and minimum product and air temperatures can be set by the operator to avoid product over-stress.

Product hermal stress testing is also possible by fitting the Sharetree Product Carrier system. This simplifies mechanical and electrical interfacing of the products and can be extended to include full test and monitoring under computer control.

The StressMaster-2 exceeds the guidelines for TSS chamber performance recommended by the Society of Environmental Engineers (SEE).



StressMaster-2 HALT/HASS chamber

Product Carriers for Test Chambers

Walk-In Test Chambers

The Sharetree range of modular walk-in Test Chambers provide a wide variety of controlled atmospheres. The designs represent the latest 'state of the art' in environmental technology, and incorporate a unique combination of advanced features together with proven reliability.

The walk-in test chambers are of versatile modular construction allowing designs to customer requirements as required. This form of construction has many advantages.

Product handling features such as shelving and trolleys can be easily added to create high volume Burn-in and Life-Test systems.



Walk-in Chamber.pdf

Case-rated thermal solutions

The thermal forcing blocks are designed to achieve rapid temperature excursions on devices suitable for mounting on a heatsink. (Adaptors can be supplied for case-rated devices which do not have a flat surface).

Temperature change rates on the device case far exceed those achievable with air-based systems. Thermal Stress Blocks are available in a variety of sizes to accommodate single devices (eg. for characterisation tests), or for multiple devices (eg. for Stress Screening or Burn-In of batches).



Case-rated thermal solutions.pdf

Product Carrier System

The Sharetree Product Carrier system is a standardised method of mechanically supporting products inside a test chamber, with electrical connections if required.

The system consists of a stainless-steel inner frame with a set of Product Carriers. The Product Carriers can be fitted with product interface jigs to make electrical connections. Wiring is brought to modular connectors at the rear of the carrier that mate with feed-through connectors in an insulated removable panel fitted into the back wall of the chamber. An external frame can be fitted with Load Carriers that mate to the feedthrough connectors, allowing electrical power, drive signals, and output monitoring to be applied.

The Product Carrier assembly can form the basis of a complete computer controlled system with Test Management software to control and monitor the products under test.



Product Carrier systems