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PTH - Reliability from Chip Carriers to Thick Printed Wiring Boards

Featured Article

Proof is in the PTH - Assuring Via Reliability from Chip Carriers to Thick Printed Wiring Boards

Endicott Interconnect Technologies

Credit/Source: Kevin T. Knadle, Virendra R. Jadhav

The reliability of Plated through holes (PTH's) is presented as "PTH life curves" which plot cycle to fail vs. temperature for the entire range of field, accelerated thermal cycling, and assembly reflow thermal exposures on a Printed Wire Board (PWB) or Laminate Chip Carrier (LCC). The curves represent years of testing with the Current Induced Thermal Cycle test (CITC) covering different resin systems, via constructions, and metal finishes. The curves reveal a number of critical factors in PTH reliability including the significant effect of Pb free reflows, resin system formulation, and copper plate chemistry on via life...


Featured Auction

Printed Circuit Board Equipment Exchange #7


Sale Type: Online Auction

Sale Open: 27 June 2007, 12:01 A.M. PDT

Sale Close: 28 June 2007, 5:00 P.M. PDT

Location of Assets: USA


Assets for Sale:

Bid on State-of-the-Art PCB Manufacturing Equipment

Featuring Drilling & Routing, Lamination, Etching, Plating, Expore, Solder Mask, Final Test,plus SMT & Placement, Feeders, Reflow & Convection, Screen Printing and much more





Rich Larue

Free Trial

ProntoPLACE used by electronics manufacturers will quickly program your surface mount SMT and thru-hole assembly equipment. Universal, Fuji, Mydata, Siemens, Panasonic, Philips, Contact Systems (CS400, etc.), Camelot, Quad assembly and others are supported. Also create create work and assembly instructions, etc.


Best Video Soldering Tips

Lead-Free (SAC Alloy) PLCC Placement (2 of 2)


Bob Wettermann

BEST Instructors have put to video demonstrations of common hand soldering skills. These are not designed to be in place of live one on one training where repetitive skills and subsequent one on one feedback is given. Rather they are quick refreshers designed to be viewed if a specific skill has not been practiced in a while.

Watch Video


PCB Array Designs

Posted by SWAG

We do not recommend array sizes. PCB houses take a single board and turn it into a step/repeat that is best fit for their process = cheaper boards I suppose. We then approve this array and build programs and tooling to match. (...) What are your recommendations/ideas for improving control on this issue?...»»

IEC - 60601 compliant LF-NC Wire Solder

Posted by Chris Gregg

Im having problems with electromigration post a IEC - 60601 test (95% humidity for 48 hours). Im looking for a lead-free NC wire solder that will pass. Does anyone know of any that will work?.... »»

Electrovert - MiniPak 300, FDC 450 controls, setting Threshold

Posted by jamesm

After completing the field calibration for FDC-450, I followed the instructions on adjusting the Threshold setting. With the density value set a .875, I turned the set screw to the right 14 times from zero and to the left 14 times from zero... »»

Visit the Forum...


Six Sigma DOE Workshop

Seminar/Course | Business Industrial Network

Tue, June 12, 2007 | Microsoft Building, Saint Louis, Missouri, USA

Attend this 4-day skill-building hands-on application workshop and learn how to guide your project team with the proven skills they need to design-in quality in product and process and tackle the technical problems on the production floor... »»

Random Vibration, Shock Testing, HALT, ESS, HASS

Seminar/Course | A.T.E. Solutions, Inc.

Tue, June 12, 2007 | Tinton Falls, NJ, USA

Upon completion of this short course, you will be able to measure vibration and shock, calibrate vibration and shock measurement systems, convert measured data into a test program, interpret vibration... »»

AIMS Harsh Environment Electronics Workshop

Conference | SMTA

Wed, June 13, 2007 | Crowne Plaza Hotel, Indianapolis, IN, USA

This workshop will address the concerns related to harsh environment electronics and the challenges within the electronics community with an added emphasis on military and space... »»

Visit the Event Calendar...




SMTA - Surface Mount Technology Association is a non-profit international association of companies and individuals (totalling 4,000) involved in all aspects of advanced electronics assembly, surface mount and related technologies. The association is dedicated to the advancement of the electronics industry through member education and interaction. Membership Info

Upcoming Event for SMTA

Successful Lead-Free RoHS Strategies Conference / Academy Program

Tue, June 19, 2007 | Holiday Inn, Boxborough, MA, USA

This event will bring attendees timely and relevant information and best practices for use in the reliable and effective transition to lead-free and RoHS assembly. The conference is structured to bring the latest information from industry experts to enable both consistent and reliable processes. The Do it Right � Do it Now seeks to offer attendees the tools to transition to lead-free with the high quality they are accustomed to in leaded systems while maintaining regulatory due diligence...»»


IPC - Association Connecting Electronics Industries is a US-based trade association dedicated to the competitive excellence and financial success of its nearly 2,600 member companies which represent all facets of the electronic interconnection industry, including design, printed wiring board manufacturing and electronics assembly. Membership Info

Upcoming Event for IPC

IPC International Conference on Flexible Circuits

Tue, June 12, 2007 | Minneapolis, MN, USA

Fine lined? Multilayered? Highly dense with IC packages on top? Flex offers an array of choices with a growing number of benefits. For managing high temperatures successfully, reducing weight and space and saving on assembly costs, flex can be the answer you've been searching for. Learn about new manufacturing technologies, test strategies and applications at the IPC International Conference on Flexible Circuits...»»

Career Center


Manufacturing Technician

Quantum Controls

Chanhassen, MN, USA

We seek a highly organized multi-tasker, skilled in troubleshooting, with strong electro-mechanical aptitude...»»

Test Engineer

Plexus Corporations

Neenah, WI, USA

Individual typically has 3-5 years experience in an engineering role or equivalent. A Bachelor's degree in Engineering or similar field...»»

High Tech Equipment Sales

Smith & Associates

Austin, TX, USA

If you are a motivated salesperson with experience in selling late-model capital equipment...»»


Electronic/Mechanical Technician

Desired Field: Maintenance...

Winchester, VA, USA

20 years working on thru hole and Smt equipment. Phoenix II Operator Certification...»»

Electronics Engineer

Desired Field: Engineering

Tijuana, Mexico

7 years of experience in Manufacturing procesess and New Products Introduction of comercial and military SMT and PTH boards...»»

SMT Engineer

Desired Field: Engineering, Production

Mentor, OH, USA

6 years of experience in electronics. I know how to program, operate, maintain, setup SMT machines...»»

Visit Career Center...

SMTnet Express
June 07, 2007

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