The reliability of an alternative and its constant improvement is crucial in manufacturing electronics.  To have the ability to deliver a trustworthy product to market in the briefest quantity of time. Hence, the Environmental test chamber manufacturer demands a technique that highlights the alternative and determines possible design and production defects. HALT HASS testing allows manufacturers to remain competitive by supplying evaluation recommendations in the design phase or before the manufacturing launch.

In a production ecosystem that’s continually seeking more vital layout, reduced life cycle costs, and most importantly: keeping a leading reputation with their clients. So, manufacturers have started to trust the potency of those evaluations. In this guide, we discuss the difference between both forms of environmental testing, the pressures utilized, and their functionality.

What is HALT and HASS?

HALT and HASS testing have been conducted to determine design flaws, enhance product reliability, and reduce life cycle costs. The objective of HALT and HASS testing is to ascertain if a product will stay dependable in its intended environment within a necessary period. Though the two methods examine these goods’ physiological integrity being fabricated(which subsequently brings trust and builds client confidence), you will find gaps between them.

HALT: Highly Accelerated Life Testing

HALT is a pressure testing methodology utilized to enhance the robustness and dependability of the product layout. Throughout HALT, an item is stressed beyond the item specifications to identify design flaws early in the growth phase. It focuses on knots like vibration and temperature to ascertain its own operational and destruct limits. The testing method enables redesign to reduce product development expenditure, enhance time-to-market, and find the physical constraints of a style. The item is stimulated and tracked to recognize limits and some other failure factors. The environmental test chamber visually influences the essence of the collapse and guides clients on the actions required. (ie. Insufficient immunity or wrong placement).

Highly Accelerated Life Testing (HALT) is a procedure that uses a stepped stress method in exposing your product to varied hastened pressures to find the physical constraints of a product and design reliability. Producers can detect their goods’ failure modes and ascertain their collapse mechanics.

Outcomes of HALT testing permit visibility of:

  • Thermal and mechanical layout weakness
  • Operational component constraints
  • The difference between the product’s needed operating limitations and maximum limitations

HASS: Highly Accelerated Stress Screening

HASS can also be a pressure testing methodology done to enhance the efficacy of the completed product. While HALT is done throughout the development period, HASS is done during the production stage and before shipment and purchase. It ensures the continuing reliability of this item and adheres to the layout changes constructed during HALT. Besides, in HALT testing, vibration and thermal limits are put between HALT’s intense collapse factors and the standard operating limitations. The new aim is to immediately employ restricted stress into the item to prevent customers from receiving products that are DOA (Dead on Arrival) or undergoing premature failure.

When the HALT procedure was finished and the item was ruggedized, we could create a custom-made manufacturing display to discover process flaws.

  • Employ all stresses simultaneously. During vibration, the ramp temperature between shorts resides.
  • HASS stress levels derive from HALT limits.
  • Contain any “critical” additional merchandise pressures (as determined from HALT, e.g., product authority).
  • Conduct precipitation monitoring and assess products beyond working limits, near destruct limits.
  • Conduct detection, display and assess product near working limits. Confirm and research precipitation screen failures, along with other soft and hard failures.

Why should you do HALT/HASS?

Highly accelerated life tests detect weaknesses and defects early in the design stage by analyzing collapse. In contrast, highly accelerated stress screening (HASS) grabs manufacturing flaws on production parts before setup without decreasing its lifestyle. HALT also provides invaluable information for reliability metrics at the part level. The evaluation results advantage clients, shield the company’s reputation, and protect against expensive redesign after the product development cycle.

How can you perform a HALT/HASS Test?

Fundamental Measures in HALT/HASS Procedure:

 Precipitation – usually accomplished in HALT. The procedure for precipitation will change the invisible defect to one that’s detectable.

Detection – discovering a fault exists

Corrective Action – altering the layout or procedures that caused the error

Verification ascertaining the merchandise has been repaired or enhanced by performing evaluations before product launch.

Collective datainputting learned knowledge to the database to utilize for comparable events

Halt Test Step by Step Procedure

HALT comprises progressively greater measure stress raises.

  1. HALT testing (Cold Measure)-The evaluation will begin with a quick low-temperature step-stress.
  2. HALT testing (Sexy Measure)- Using a quick high-temperature step-stress, the testing starts at + 25°C, together with +10°C measures)
  3. Temperature cycle step-stresses
  4. Combined pressures (temperature and vibration cycle) Cool or heating up as quickly as possible.
  5. At some stage, a decision will soon be made, to mend or not.
  6. After all, HALT based layout alterations are complete. The last test is going to be conducted.

Why Choose DGBELL for HALT HASS Test?

Environmental testing (ecological simulation) will be the essential excellent control testing manner in the automotive sector. These evaluations are expensive for two reasons: On one side, the high-tech test gear is pricey. On the other hand, the expense of energy is enormous. The premium quality demands of global standards (ISO, DIN, ASTM, VDA, etc.) define long term climatic and temperature testing. The very long-term time significantly raises the energy bill. A standard HASS environmental test chamber incorporates a broad temperature range with around 15 K/min temperature shift speed. This condition involves substantial energy consumption in the heating stage. Consequently, the planet’s leading Environmental Test Chamber Manufacturer of climatic chambers spends a good deal of money, creating a power-efficient climatic room kind.

Environment Friendly Technology from DGBELL

Our team of specialists can support your evaluation needs from planning phases, such as testing and failure investigation. DGBELL’s in-house machine shop enables us to design and manufacture any custom fixture or automation options to satisfy your particular product requirements. Check our Environmental Test Chamber Price here.

  • Electricity efficiency
  • Conservation of funds
  • Reduce CO2 emissions
  • Quicker service period
  • Reduce operation costs
  • Energy-efficiency — in the initial measure
  • Evaluation of the accessible media
  • Clarification of the accessible media
  • Best Gear for your program Integration in current infrastructure
  • Choice Green Mode and Green Mode + New smart driven Systems


DGBELL provides OEMs with an incorporated, end-to-end alternative through the product development cycle. Including evaluation recommendations at the design stage or before the production launch. With vast experience, we’ve got the experience to run a wide assortment of regular tests, in addition to a number of the most stringent testing processes like HALT HASS evaluations. Our experienced technicians may create powerful test strategies and execute customer-specific evaluation regimes onsite to help you deliver the most dependable end product.