ACI Technologies, Inc.

ACI Technologies, Inc. Engineering, Training, Manufacturing, Analytical, and Programs ACI was established in 1992 by its founder and current CEO, Alan J. Criswell.

His vision was to develop a vehicle to bridge the gap between leading edge applied research efforts in electronics manufacturing and the successful integration of the developed technologies on the factory floor. ACI occupies over 36,000 square feet of office and laboratory space in a contemporary office campus adjacent to the Philadelphia International Airport. The facility houses a 10,000 square

foot demonstration factory containing the latest electronics manufacturing equipment, fully equipped classrooms for skill-based and professional level technical training, an analytical laboratory for materials and environmental testing. Most importantly, ACI has achieved excellence in electronics manufacturing training, research, and consulting services by recruiting and retaining the best engineers and technicians in the field, most with advanced degrees in their respective disciplines. ACI successfully privatized a regional, government operated laboratory known as the EMPF in 1995. ACI transformed this facility into a National Center of Excellence offering best-in-class technical resources in electronics manufacturing to the U.S. Navy, the Department of Defense, and industry. Today, ACI's National Center of Excellence Model serves as a conduit to leverage the nation's best technical resources from government, industry, and academia in a cooperative and cost-efficient effort to maximize the development and insertion of electronics manufacturing technologies across a broad base of industrial partners. This leveraged technical capability has and will continue to contribute greatly to ensuring the competitiveness of the U.S. industrial base in electronics manufacturing.

https://mailchi.mp/aciusa/happy-holidays-from-aci-technologies-3wp6pl0gha
12/22/2020

https://mailchi.mp/aciusa/happy-holidays-from-aci-technologies-3wp6pl0gha

ACI would like to say thanks to all of you and wish everyone a wonderful holiday season. As a token of our appreciation, we are delighted to offer you a 15% discount on any training (including online), manufacturing, or analytical lab service from now through March 31st, 2021. Use the code HolidayGi...

December Courses and Tech TipCheck out the December training class schedule and read “Tin Whisker Risk Assessment Improv...
11/19/2020

December Courses and Tech Tip
Check out the December training class schedule and read “Tin Whisker Risk Assessment Improves Reliability” in this month’s Tech Tip.

Check out the December class roster and view the complete 2021 training schedule on our website. Read “Tin Whisker Risk Assessment Improves Reliability” in this month’s Tech Tip.

https://mailchi.mp/aciusa/november-courses-at-aci-and-tech-tipNovember Courses and Tech TipCheck out the November traini...
10/22/2020

https://mailchi.mp/aciusa/november-courses-at-aci-and-tech-tip
November Courses and Tech Tip
Check out the November training class schedule and read “A Non-destructive Approach to Identify Intermittent Failure Locations on Printed Circuit Cards (PCC) that have been Temperature Cycle Tested” in this month’s Tech Tip.

Normally, I'd post a   article. But, since I was on vacation last week visiting my daughter in Cocoa Beach ,Florida, I t...
08/10/2020

Normally, I'd post a article. But, since I was on vacation last week visiting my daughter in Cocoa Beach ,Florida, I thought I'd share the joy that my family and I were able to witness!

SpaceX designs, manufactures and launches advanced rockets and spacecraft.

07/30/2020


Vacuum reflow ovens

Vacuum reflow ovens can both correct existing voids and prevent excessive voiding issues.
The consequences of voids in solder joints can vary from a non-issue to a serious and reject worthy condition. The voiding problem is most closely linked to Ball Grid Arrays, (BGAs) and quad flat no-leads (QFNs). Voiding has a consequence in two ways, the electrical reliability of the component, and the heat transfer of the component to the board can be reduced. The resulting overheating of the component can result in poor service life. In general, the less voiding the better.

With a standard reflow oven void reduction is usually addressed in the set-up phase of the process,
selecting the solder paste and the temperature profile, but there is a limit to what these steps can achieve. On the other hand, Vacuum reflow ovens can drive down voids to less than 5%.

Vacuum reflow technology can also remedy excessive voiding in established products and assembled circuit cards, and this process could salvage products which would otherwise be unusable. Finished boards can be run thru the vacuum reflow oven. Recognizing that the Vacuum reflow technology can remedy excessive voiding in existing products could be a less expensive corrective action than reworking the components of individual boards.

BGAs are a common component with well-established IPC limits on voiding, e.g. 30 %. The voiding limits for QFNs is not yet resolved but it is being established. QFNs are especially vulnerable to voiding as there is a large thermal pad under the part designed to transfer heat from the component to the circuit board. The solder joint under the component pad acts as a heat transfer path. If the solder joint is filled with gas voids it restricts the heat transfer rate, raising the temperature of the component and leading to decreased component life.

To summarize, to enable manufacturers to manage voiding in either QFNs or BGAs, vacuum reflow ovens have been introduced. These ovens have a vacuum chamber directly after the liquid stage of the process. Pulling a vacuum when the solder is a liquid stage enables the solder to outgas, with far fewer gas voids in the solder joint. What is also a critical strength of reflow ovens is that finished products that demonstrate a voiding problem can also be sent thru the vacuum reflow oven and the voids can be reduced.

..."And should we win the day, the 4th of July will no longer be known as an American holiday, but as the day when the w...
07/28/2020

..."And should we win the day, the 4th of July will no longer be known as an American holiday, but as the day when the world declared in one voice: "We will not go quietly into the night!"...

Bombshell: The government’s once-clandestine UFO program will reveal findings on unexplained materials and crashes.

 07/27/1949.."ain't got time to take a fast train..."
07/27/2020



07/27/1949
.."ain't got time to take a fast train..."

On July 27, 1949, the world’s first jet-propelled airliner, the British De Havilland Comet, makes its maiden test-flight in England. The jet engine would

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1 International Plz Ste 600
Philadelphia, PA
19113

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Monday 9am - 5pm
Tuesday 7:30am - 5pm
Wednesday 7:30am - 5pm
Thursday 7:30am - 5pm
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