Professional trainer/coordinator for electronic assemblies, surface mount and plated through-hole printed wiring boards
Industry Directory | Manufacturer
PCB Repairs of all kinds including-Solder on Tab (Solder Removal, Gold Plating), PTH & Delam repairs, etc.
Precision Dispensing System for Heated Dispense Applications The GPD Global MAX II is a compact; high-accuracy system designed for today’s advanced heated dispensing applications. The frame is molded from “liquid rock” which gives the system a stabl
New Equipment | Education/Training
This two day course is based on the IPC-7721. Students will learn how to repair surface mount pads, BGA pads, finger contacts, traces, laminate, plated through holes and more. Students will be introduced to the proper techniques for SMT & PTH compon
Electronics Forum | Mon Sep 11 20:33:25 EDT 2000 | Dave F
What does a section of the through hole look like? Is you fab using a dull drill and plating over the fibers? Good luck
Electronics Forum | Mon Sep 11 14:07:26 EDT 2000 | Steve
Hi ya'll!! We've got some PCB's in receiving inspection that has these little nodules in plating inside all of the barrels. These are microwave PCB's and have almost all of the surface area on both sides covered with with solid metal planes, and no
Used SMT Equipment | Soldering - Wave
Senju Lead Free Wave SPF-300 Very Nice clean machine Dual Wave Solder No Nitrogen No Top Preheat Zones 355mm Max PCB width 3x Bottom Radiant Preheat Zones SPF-300
Used SMT Equipment | Other Equipment
200 µm. • Ideal for through-hole plating multilayer PCBs. • Number of through-plated holes: No limit. • Maximum number of layers: 8. • Maximum contact resistance: 10 mΩ. • Chemical thinning: Yes. • Activator: Carbon.
Industry News | 2013-07-22 09:54:27.0
GPD Global has introduced its new NCM5000 dispense pump for easy jetting. With only two wetted parts and no seals or springs to replace or adjust, field operation is simple.
Industry News | 2003-02-18 08:52:21.0
Placed Another Order for an ELX6146 High-speed Emma Test System from Viking Test Services
Parts & Supplies | Pick and Place/Feeders
101004 TRANSISTOR BC108 NPN 101020 POWER SUPPLY – UPRATED CURRENT 101047 SQUEEGEE MATERIAL 9.5 X 9.5 85-90 101081 CONNECTOR CIRCULAR 14WAY 97-3102A 101142 FRONT SQUEEGEE CARRIAGE 101143 OUTER MTG SQUEEGEE BLOCK 101145 COVER (TXT) 101146
Parts & Supplies | Pick and Place/Feeders
101004 TRANSISTOR BC108 NPN 101020 POWER SUPPLY – UPRATED CURRENT 101047 SQUEEGEE MATERIAL 9.5 X 9.5 85-90 101081 CONNECTOR CIRCULAR 14WAY 97-3102A 101142 FRONT SQUEEGEE CARRIAGE 101143 OUTER MTG SQUEEGEE BLOCK 101145 COVER (TXT) 101146
Technical Library | 2015-12-23 16:57:27.0
The onset of copper barrel cracks is typically induced by the presence of manufacturing defects. In the absence of discernible manufacturing defects, the causes of copper barrel cracks in printed circuit board (PCB) plated through holes is not well understood. Accordingly, there is a need to determine what affects the onset of barrel cracks and then control those causes to mitigate their initiation.The objective of this research is to conduct a design of experiment (DOE) to determine if there is a relationship between PCB fabrication processes and the prevalence of fine barrel cracks. The test vehicle used will be a 16-layer epoxy-based PCB that has two different sized plated through holes as well as buried vias.
Technical Library | 2021-07-20 20:02:29.0
During the manufacturing of printed circuit boards (PCBs) for a Flight Project, it was found that a European manufacturer was building its boards to a European standard that had no requirement for copper wrap on the vias. The amount of copper wrap that was measured on coupons from the panel containing the boards of interest was less than the amount specified in IPC-6012 Rev B, Class 3. To help determine the reliability and usability of the boards, three sets of tests and a simulation were run. The test results, along with results of simulation and destructive physical analysis, are presented in this paper. The first experiment involved subjecting coupons from the panels supplied by the European manufacturer to thermal cycling. After 17 000 cycles, the test was stopped with no failures. A second set of accelerated tests involved comparing the thermal fatigue life of test samples made from FR4 and polyimide with varying amounts of copper wrap. Again, the testing did not reveal any failures. The third test involved using interconnect stress test coupons with through-hole vias and blind vias that were subjected to elevated temperatures to accelerate fatigue failures. While there were failures, as expected, the failures were at barrel cracks. In addition to the experiments, this paper also discusses the results of finite-element analysis using simulation software that was used to model plated-through holes under thermal stress using a steady-state analysis, also showing the main failure mode was barrel cracking. The tests show that although copper wrap was sought as a better alternative to butt joints between barrel plating and copper foil layers, manufacturability remains challenging and attempts to meet the requirements often result in features that reduce the reliability of the boards. Experimental and simulation work discussed in this paper indicate that the standard requirements for copper wrap are not contributing to the overall board reliability, although it should be added that a design with a butt joint is going to be a higher risk than a reduced copper wrap design. The study further shows that procurement requirements for wrap plating thickness from Class 3 to Class 2 would pose little risk to reliability (minimum 5 μm/0.197 mil for all via types).Experimental results corroborated by modeling indicate that the stress maxima are internal to the barrels rather than at the wrap location. In fact, the existence of Cu wrap was determined to have no appreciable effect on reliability.
Precision Dispensing System for Heated Dispense Applications The GPD Global MAX II is a compact; high-accuracy system designed for today’s advanced heated dispensing applications. The frame is molded from “liquid rock” which gives the system a stabl
ACI Technologies Inc. (ACI) is a scientific research corporation dedicated to the advancement of electronics manufacturing processes and materials for The Department of Defense and industry. This video provides an overview of our commercial service
Training Courses | | | IPC-6012 Specialist (CIS)
The Certified IPC-6012 Specialist (CIS) training covers design, fabrication and inspection of rigid printed boards.
Training Courses | | | IPC-6012 Trainer (CIT)
The Certified IPC-6012 Trainer (CIT) courses recognize individuals as qualified trainers in the area of design, fabrication and inspection of rigid printed boards and prepare them to deliver Certified IPC-6012 Specialist (CIS) training.
Events Calendar | Tue Jan 23 00:00:00 EST 2018 - Tue Jan 23 00:00:00 EST 2018 | New Milford, Connecticut USA
FREE Webinar: Eliminate Circuit Board Problems and Failure Modes
Career Center | Pullman, Washington USA | Engineering
The Opportunity: Schweitzer Engineering Laboratories (SEL) seeks a professional, innovative and detailed individual for our Manufacturing Engineer position. If you are looking for an opportunity to contribute your skills and abilities to our growing
Career Center | Lalkua, India | Engineering,Maintenance,Production,Quality Control,Research and Development,Technical Support
Machine maintenance Service and support knowledge with customer satisfactory. Deal with customers at all level via phone,remote and mail.Sound knowledge of PCB fabrication machine.
Career Center | Fredericksburg, Virginia USA | Engineering,Maintenance,Management,Production,Quality Control
• Certified CP643 Loader Calibration – FUJI American Chicago, IL 2001. • Certified - Cookson Performance Solutions BTU - PARAGON - P150 Oven – Maintenance & Electrical Troubleshooting Charlotte, NC 2001. • Certified UNIVERSAL (GSM) Platform: Operat
SMTnet Express, December 23, 2015, Subscribers: 23,927, Members: Companies: 14,845, Users: 39,621 PCB Fabrication Processes and Their Effects on Fine Copper Barrel Cracks Edward Arthur, Charles Busa, Melissa Durfee, Chad Gibson, Wade Goldman P
| https://www.eptac.com/webinars/plated-through-hole-fill-understanding-the-process-and-assembly-requirements/
Plated Through Hole Fill: Understanding the Process and Assembly Requirements - EPTAC - Train. Work Smarter. Succeed Looking for solder training standards, manuals, kits, and more
| http://www.feedersupplier.com/SMT_THROUGH_HOLE
. Initially, all electronic components were through-hole mounted. Through-hole components have metal leads, and these leads are fed through-plated holes in the circuit board
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