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Getting to Know Your Designer
In this issue, we examine how fabs work with their design customers, educating them on the critical elements of fabrication needed to be successful, as well as the many tradeoffs involved. How well do you really know your customer? What makes for a closer, more synchronized working relationship?
In this issue, the biggest names in PCB manufacturing share their economic outlook for the upcoming year and beyond. As you will see, they were all bullish on our industry, but there was some apprehension as well. No one wants to get burned by another the supply chain disruption.
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IPC Issues Warning on Microvia Reliability for High Performance ProductsMarch 7, 2019 | IPC
Estimated reading time: 3 minutes
The proliferation of tighter microvia densities and signal integrity requirements in printed boards within the electronics industry has revealed reliability concerns with microvia structures in high performance products. A number of IPC OEM member companies have approached IPC with examples of microvia failures in high-profile hardware that were not observed until after bare printed board fabrication, inspection and acceptance, including:
- Post-reflow in-circuit test
- During “box level” assembly environmental stress screening (ESS)
- In service (end customer-fielded product)
Many of these failures occurred within products that had already passed traditional production lot acceptance testing in accordance with existing IPC-6010, Printed Board Qualification and Performance Specifications. IPC has been provided with data showing that traditional inspection techniques utilizing thermally stressed microsections and light microscopes alone is no longer an effective quality assurance tool for detecting microvia-to-target plating failures.
Related to this, in 2018, IPC released IPC-WP-023, an IPC Technology Solutions White Paper on Performance-Based Printed Board OEM Acceptance titled “Via Chain Continuity Reflow Test: The Hidden Reliability Threat—Weak Microvia Interface.” The white paper asserts stacked microvia reliability problems linked to a weak interface between microvia target pads and electrolytic copper fill and provides data in support of the observations reported by numerous IPC OEM member companies.
As a result of IPC-WP-023, the IPC V-TSL-MVIA Weak Interface Microvia Failures Technology Solutions Subcommittee was formed in late 2018 to begin investigating the potential causes of these failures and to provide industry resources on the topic. This group provided its first update to industry during an open forum held during IPC APEX EXPO 2019 and will continue to provide updates as it progresses.
In response to this, IPC is issuing the following warning statement, which will also be included in the forthcoming IPC-6012E, Qualification and Performance Specification for Rigid Printed Boards:
“There have been many examples of post fabrication microvia failures over the last several years. Typically, these failures occur during reflow, however they are often undetectable (latent) at room temperature. The further along the assembly process that the failures manifest themselves the more expensive they become. If they remain undetected until after the product is placed into service, they become a much greater cost risk, and more importantly, may pose a safety risk.”
Looking forward, IPC is working on the concept of moving away from traditional microsection evaluations and focusing on performance-based acceptance testing, a recommendation made several years ago by the IPC D-33a Rigid Printed Board Performance Task Group responsible for the IPC-6012 specification. In conjunction with this task group and the IPC 1-10c Test Coupon and Artwork and Generation Task Group and D-32 Thermal Stress Test Methodology Subcommittee, IPC continues to work on revisions to its existing test methods for thermal stress (IPC-TM-650, Method 2.6.27) and thermal shock (IPC-TM-650, Method 18.104.22.168). These methodologies make use of performance-based acceptance test coupons utilizing electrical resistance measurements, such as the IPC-2221B Appendix “D” coupon, which when designed properly in accordance with the IPC-2221B Gerber Coupon Generator tool, have allowed manufacturers to detect latent microvia failures and shelter themselves from possible defect escapes.
IPC is a global industry association based in Bannockburn, Ill., dedicated to the competitive excellence and financial success of its 5,000 member-company sites which represent all facets of the electronics industry, including design, printed board manufacturing, electronics assembly and test. As a member-driven organization and leading source for industry standards, training, market research and public policy advocacy, IPC supports programs to meet the needs of an estimated $2 trillion global electronics industry. IPC maintains additional offices in Taos, N.M.; Washington, D.C.; Atlanta, Ga.; Brussels, Belgium; Stockholm, Sweden; Moscow, Russia; Bangalore and New Delhi, India; Bangkok, Thailand; and Qingdao, Shanghai, Shenzhen, Chengdu, Suzhou and Beijing, China.
IPC White Paper Emphasizes Critical Importance of Data Analytics for Electronics Manufacturing Process02/26/2024 | IPC
The increasing complexity of electronics manufacturing requires embracing data analytics to manage electronics factories, according to a new white paper from IPC’s Chief Technologist Council (CTC), "Outlook for Data Analytics in the Electronics Manufacturing Industry."
ROCKA Solutions is excited to announce that Justin Worden, Vice President of Sales & Marketing, will present at the upcoming SMTA Dallas Expo & Tech Forum. The event is scheduled to take place Tuesday, March 19, 2024 at the Plano Event Center.
KYZEN, the global leader in innovative environmentally friendly cleaning chemistries, is thrilled to announce the premier of a new online video series “Ask Dr. Adam.”
I-Connect007 has just released the latest episode of its podcast series, On the Line with..., which focuses on designing for reality in the electronics industry. In this episode, host Nolan Johnson talks with ASC Sunstone VP/Manager Matt Stevenson about CAD tool features and data formats that help designers make better decisions and transfer better designs to manufacturing.
TT Electronics, a leading provider of global manufacturing solutions and engineered technologies, proudly announces the grand opening of its newest manufacturing facility located in Mexicali, Mexico.