HALT/HASS Testing Spotlight Graphic

HALT/HASS Testing Spotlight

Austin Reliability Labs (ARL) performs a wide range of testing services that meet established benchmarks in a variety of industries. For these companies, we utilize our decades of experience to provide customized testing solutions that pair products with the right testing methods, one of which is HALT/HASS testing.


Highly Accelerated Life Testing (HALT) and Highly Accelerated Stress Screen (HASS) testing can be combined to push a product beyond its limits, identifying latent weaknesses in a short amount of time to improve design and ensure reliability.


What is HALT?

In HALT, a product is subjected to progressively higher levels of separate and combined stresses that extend past the product’s margin of intended operation to the point of failure. These stresses include thermal dwells combined with voltage margining and power cycling, rapid temperature transitions, vibration, and combined rapid temperature transitions and vibration. 

By increasing the product’s conditions past its end-use environment to the point of destruction, it becomes possible to analyze and identify the root cause and implement possible repair and design changes. Once repaired, the stress can be increased to find the product’s next failure. The process is repeated until either the fundamental limit of the technology of the product is reached, or the failure becomes too difficult to repair. 

Once the HALT process is completed and the product’s design has been upgraded for robustness, a HASS manufacturing screen can be developed to ensure that the rest of the product line continues to meet the same high engineering standards.


What is HASS Testing?

HALT Chamber

The goal of HASS is to develop an impactful testing process that is effective in causing latent failures to become actual failures without removing a significant amount of the product’s life. This process is known as a stress screen and uses similar stresses as HALT but derated, or reduced power rating.

After the functional integrity of the product is tested, HASS testing continues with a two-step, proof-of-screen process that’s used to determine the effectiveness of the stress screen and make sure the screen did not remove significant life from the product.  

HASS development was not intended to be a rigid process with an endpoint. Rather, it is a living process that may need modification or adjustment over the life of the product. As more is learned about the product over time, including the HASS results, the profile may change and evolve into an even better, more effective screen.


The ARL Difference

Our accredited state-of-the-art lab has partnered with Qualmark and meets the necessary requirements to be certified as a Qualmark Accelerated Reliability Testing Center (ARTC). Our lab’s certified HALT/HASS chambers are well-equipped to support your testing needs with valuable results. 

At ARL, we believe that well-written and comprehensive reporting is very important and key to successful testing. When you’re looking to diagnose those manufacturing flaws and turn a prototype or existing design into a full-fledged and durable product, reach out today and see what our team of reliability testing experts can do for you.

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About ARL

Recognized as one of the top product reliability labs in the country with a unique balance of testing, consulting and on-site staffing services, Austin Reliability Labs (ARL) is a place where we recognize the hard work and passion that goes into the design and development of your product and want to find any problems in an effort to perfect it. We also understand a reputation is something that builds over time, so we focus on establishing long-term partnerships with each of our clients. With that in mind, we not only specialize in writing and developing all of the tests that we perform, but, unlike other labs, we provide pass / fail reports on all of our tests and decipher the results for you in order to maximize your product’s success. In addition to our on-site staffing and consulting services, ARL’s full array of reliability testing services include: HALT / HASS, Battery Life Tests, Qualification Tests, Environmental Tests, Mechanical Tests, Additive Manufacturing Tests and Custom Tests.

We believe quality is infused by finding every flaw in a product and methodically removing each one until the product shines. As a result, only a thorough, comprehensive reliability test program, as provided by ARL, will allow a product to emerge that will earn or maintain an unsullied and clean brand reputation.