DfR Solutions Reliability Designed and Delivered

Sherlock provides time and testing efficiencies that reduce the number of required physical testing iterations and improve the chances that prototypes will pass qualification tests in the first round. Engineers can design reliability right into electronics, allowing them to:

  • Build and test virtual products
  • Modify designs in near real-time
  • Quickly run mechanical simulations
  • Identify testing opportunities
  • Evaluate design choices
  • Gain project-specific insights
  • Align reliability goals with metrics and requirements

Using Sherlock as part of your test plan significantly reduces the time and expense of multiple iterations of each qualification test, including:

Temperature Cycling

Instead of applying and working within the parameters of traditional methods, Sherlock designs the board and applies the temperature cycle to it. Faulty components and the number and type of failures are identified with certainty, allowing for a quicker, usually less costly fix to happen earlier in the process.

Plated Through Hole Fatigue

Instead of allowing for human interfaces when monitoring several key contributors to PCB functionality, Sherlock’s computerized modeling is based on the temperature map from the solder fatigue input, and uses board stackup to calculate barrel stress for finite test results and remedy.

Vibration and Shock

The conventional probabilistic approach to vibration and shock testing cannot pinpoint actual failure events. Sherlock calculates board strain during mechanical shock and vibration testing, and then uses the data to predict the probability of failure and determine root causes of failure and corresponding failure events.

Conductive Anodic Filament (CAF)

Sherlock gathers data on drill hole locations and diameters directly from the computerized drill files, filters by hole size and precisely identifies a “damage zone” between a pair of holes for focused analysis. This automated CAF qualification decreases the number of failures and ensures product reliability throughout manufacturing.

Highly Accelerated Life Testing (HALT) and Highly Accelerated Stress Screening (HASS)

HALT and HASS are excellent tools for design verification in the electronics industry. HALT provides insight into margins and weak points in design, and HASS is developed by running a combined temperature cycling/vibration HALT to failure and reducing the duration by 95%. This should ensure that only 5% of the life is consumed in HASS; however, it could be beneficial to confirm this assumption through a Sherlock Physics of Failure simulation. Sherlock also allows test/validation engineers to vary aspects of the HASS profile and understand their influence on life consumed.

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