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HATS™ Plated-through Hole Reliability Testing Technology has been in use since 2003. Click on the questions below to see answers to inquiries that we routinely receive regarding HATS™ technology.
What is HATS™ Testing?
HATS™ testing uses a HATS™ tester to perform Thermal Shock testing in accordance with IPC-TM-650 method 2.6.7.2. The HATS™ Tester uses High Speed "Air" as the heat transfer (fluid) mechanism to heat and cool the test coupons and this provides the maximum possible heat transfer rate to and from from the test coupons using Air as a heat transfer mechanism. This allows the samples to equalize at temperature extremes in minutes rather than an hour, greatly speeding up the testing process. The HATS™ daisy chain test coupons (generated here) can be electrically tested (real time) in the HATS™ Chamber, with a Keithley System meter to make accurate and repeatable 4-wire resistance measurements of the coupons to determine barrel cracking or interconnection (post) separation in the plated-through holes of the daisy chain. The HATS™ Tester most closely replicates the "Air" heat transfer mechanism of the widely accepted Dual Chamber technique that has been used since the 1950's. Other technologies use different heat transfer fluid Mechanisms like Oil, Nitrogen, Sand or Internal Conduction to transfer heat to the coupons which results in different heat transfer rates to the coupons. HATS™ testing requires a HATS™ tester. HATS™ testers can test 36 (4 net) coupons for a total of 144 daisy chain test nets per test run. Doing 1000 cycles of that many coupons/nets with other technologies can take weeks if not months due to their limited capacity of 6 or 12 coupons. The HATS™ tester does 1000 cycles of 36 coupons/144 nets in less than a week. Carefully research the methodologies out there before you decide.
Can I buy a HATS™ Tester?
HATS™ Testing is performed by Licensed Service Laboratories around the world under ISO/IEC 17025, AALA and/or ITAR certifications. This provides the benefit of having a Professional Test Laboratory with documented quality and calibration systems providing HATS™ results with other test services available to you (like Failure Analysis) for your test coupons. HATS™ testers are no longer sold directly to end users.
Can HATS™ Tests be done with other Technologies?
HATS™ Coupons are Daisy Chain electrical coupons and can be electrically tested with other Thermal Shock Technologies that electrically test Daisy Chains, including Dual Chamber. The HATS™ Tester uses High Speed Air as the heat transfer (fluid) mechanism to heat and cool the test coupons along with a Keithley System meter to make accurate and repeatable 4-wire resistance measurements of the coupons. Other technologies use different heat transfer fluid Mechanisms like Oil, Nitrogen, Sand or Internal Conduction to transfer heat to the coupons which results in different heat transfer rates to the coupons. Other Thermal Shock Technologies use different electrical measurement techniques (2-wire, 3-wire, etc.) and meters/switching systems that may not have the accuracy and repeatability of the HATS™ tester. These differences mean that HATS™ Testing Technology and cannot be directly compared to other non Dual Chamber Thermal Shock Technologies. HATS™ Testers use air as the heat transfer mechanism just like the tried and true method used by Dual Chamber thermal shock testers for the last 50+ years. HATS™ testing requires a HATS™ tester. HATS™ testers can test 36 (4 net) coupons for a total of 144 daisy chain test nets per test run. Doing 1000 cycles of that many coupons/nets with other technologies can take weeks if not months due to their limited capacity (6 or 12 coupons). The HATS™ tester does 1000 cycles of 36 coupons/144 nets in less than a week. Carefully research the methodologies out there before you decide.
What happened to IRTS?
Integrated Reliability Test Systems (IRTS) is now closed and HATS™ testing is currently performed using HATS™ testers at respected test laboratories (Click Here) under ISO/IEC 17025, AALA and/or ITAR certifications. Bob Neves, one of the original developers of the HATS™ machines and patent, is continuing HATS™ testing technology and provides both parts and service to the HATS™ machines that are in the field.
Can HATS™ Testing be performed under ITAR or with ISO/IEC 17025 or AALA quality systems?
Unlike other Accelerated Testing Techniques, HATS™ Testing is performed by Licensed Service Laboratories around the world under that carry ISO/IEC 17025, AALA and/or ITAR certifications. This provides the benefit of having a Professional Full Service Test Laboratory with documented quality and calibration systems providing HATS™ results. These laboratories can also provide other test services to you (like Failure Analysis) for your test coupons. Check to see if your current test service provider truly meets your ITAR, quality system or calibration system requirements.
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