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... 
Printed Circuit Board Equipment Exchange #7
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 
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.
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. 
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... »» 
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... »»
Jobs: Chanhassen, MN, USA We seek a highly organized multi-tasker, skilled in troubleshooting, with strong electro-mechanical aptitude...»» 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...»» Austin, TX, USA If you are a motivated salesperson with experience in selling late-model capital equipment...»» Resumes: Electronic/Mechanical Technician Desired Field: Maintenance... Winchester, VA, USA 20 years working on thru hole and Smt equipment. Phoenix II Operator Certification...»» Desired Field: Engineering Tijuana, Mexico 7 years of experience in Manufacturing procesess and New Products Introduction of comercial and military SMT and PTH boards...»» Desired Field: Engineering, Production Mentor, OH, USA 6 years of experience in electronics. I know how to program, operate, maintain, setup SMT machines...»» |
SMTnet
Express Subscribers: 29997 SMTnet Statistics Companies: 6773 Users: 21482
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||
Express Newsletter
The SMTnet Express newsletter is sent weekly to over 25,000 subscribers.
- SMTnet
- »
- Express Newsletter
SMTnet.com, 98 Elm Street, Portland, Maine 04101 USA, Tel.207-780-0887. You have received this mailing because either you are a registered member of SMTnet.com or have expressed interest through one of our affiliate partners.Click here to unsubscribe. Unsubscribe | Manage Profile | Manage Company Listing | Contact customer service |
- SMTnet
- »
- Express Newsletter
 hitech.gif)
