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IPC is the trade association for the printed wiring board and electronics assembly industries.
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professional manufacturer of pcb
The PCB Footprint Expert is a powerful CAD library development tool powered by our own proprietary CAD LEAP Technology (Libraries Enhanced with Automated Preferences). It is packed with very powerful advanced library management features that cuts foo
New Equipment | Education/Training
This specification covers qualification and performance of rigid PCBs including with or without plated-through holes, single-sided, double-sided, multilayer with or without blind/buried vias and metal core boards. It addresses final finish and surfac
Electronics Forum | Mon May 26 03:27:00 EDT 2014 | julianf
Thanks for your reply Sarason. I'm aware now that my goals seem very ambitious and infeasible. Let me formulate my problem in an different way that might be more realistic. Is it possible to measure a DIFFERENCE in strain between top and middle la
Electronics Forum | Thu Jul 09 21:04:50 EDT 1998 | Dave F
| Hi there, | I am looking for some informations concerning the shear or pull strength of a typical TQFP 20 mils leads in relationship with the Copper/Tin intermetalic layer thickness. Could anyone help? | | Thank in advandce. | rgs, | chiakl Chiakl
Industry News | 2010-04-10 02:09:54.0
If a picture is worth a thousand words, the new H revision of IPC-A-600, Acceptability of Printed Boards, is a priceless work of art for fabricators and assemblers, particularly inspectors and product developers. IPC — Association Connecting Electronics Industries® announces the new releases of IPC-A-600H and its companion document the C revision of IPC-6012, Qualification and Performance Specification for Rigid Printed Boards.
Industry News | 2010-12-17 01:47:04.0
IPC has released the A revision of IPC-2222, Sectional Design Standard for Rigid Organic Printed Boards. Helping developers avoid common missteps that reduce board manufacturability, IPC-2222 has been expanded to include more information on board materials, such as relative costs, tolerances of board thickness, unsupported holes, and hole aspect ratios.
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.
Technical Library | 2018-10-24 18:04:12.0
Polymer Thick Film (PTF)-based printed electronics (aka Printed Electronics) has improved in durability over the last few decades and is now a proven alternative to copper circuitry in many applications once thought beyond the capability of PTF circuitry. This paper describes peak performance and areas for future improvement.State-of-the-art PTF circuitry performance includes the ability to withstand sharp crease tests, 85C/85%RH damp heat 5VDC bias aging (silver migration), auto seat durability cycling, SMT mandrel flexing, and others. The IPC/SGIA subcommittee for Standards Tests development has adopted several ASTM test methods for PTF circuitry and is actively developing needed improvements or additions. These standards are described herein. Advantages of PTF circuitry over copper include: varied conductive material compositions, lower cost and lower environmental impact. Necessary improvements include: robust integration of chip and power, higher conductivity, and fine line multi-layer patterning.
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
The PCB Footprint Expert is a powerful CAD library development tool powered by our own proprietary CAD LEAP Technology (Libraries Enhanced with Automated Preferences). It is packed with very powerful advanced library management features that cuts foo
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-600 Specialist (CIS)
The Certified IPC-600 Specialist (CIS) training targets quality assurance and acceptance of bare printed circuit boards.
Career Center | Erode, Tamilnadu India | Engineering
Professional Summary 3+ years of experience in the PCB CAM engineering Exposure to FRONTLINE GENESIS 2000 Having exposure in UCAM Exposure to Create, Array & Panelize it for manufacturability Experienced in Creating impedance cou
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/our-company/news-room/feature-content-roll-up-page/top-10-nordson-stories-of-2015
Nordson ASYMTEK Receives 2015 Global Technology Award for Tilt+Rotate 5-Axis Fluid Dispenser World´s First 9-Manifold Extrusion Die is Up and Running, Yielding Multi-Layer Film with Two-Thirds Less Layer Thickness Variation Nordson ASYMTEK Wins Service Excellence and New Product Awards at IPC APEX 2015
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/ipc7351-padstack-naming-convention_topic36_post3503.html
: Every board fabricator’s ability to register solder mask is different. The 1:1 scale solder mask covers the variation, and so long as manufacturers are building to specs such as IPC-6012 that say you
IPC is the trade association for the printed wiring board and electronics assembly industries.
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