Don't Sacrifice PCBs for Profiling Double Sided Thermally Conductive Tape Used for Attaching Thermocouples to PCBS. Non-destructive TC attachment Reliable TC readings No waiting for curing or soldering Fast, easy setup Sold in 1
New Equipment | Board Handling - Storage
Eureka XDC-2001 Fast Super Dryer Ultra Low Humidity Dry Cabinet Specs http://www.eurekadrytech.com/fast-super-dryer/xdc-2001 Anti-static Glass, Anti-static Paint on Body and Shelves, Anti-static Caster / Stands, 1 M ω Ground Wire Capacity: 1314 L
Electronics Forum | Thu Dec 16 23:17:02 EST 2010 | Jacki
Hi Kim Dun take any risk in delamination bcoz u will be the person to answer for being it. So, we do bake all Pcbs, which have 3months of shelf life, b4 startin any process although they are still inside the factory packs.
Electronics Forum | Fri Dec 17 00:55:22 EST 2010 | kemasta
Hi Kim Dun take any risk in delamination bcoz u > will be the person to answer for being it. So, > we do bake all Pcbs, which have 3months of shelf > life, b4 startin any process although they are > still inside the factory packs. We keep it in
Industry News | 2003-03-25 08:31:07.0
On completion of the transaction, Flairis will become a wholly-owned subsidiary of Beyonics and its shares will be delisted from Sesdaq.
Industry News | 2018-02-19 13:55:53.0
IPC — Association Connecting Electronics Industries® Pb-free Electronics Risk Management (PERM) Council has developed the first single document dedicated solely to assisting design engineering in the development of electronics that are completely lead-free (Pb-free) and meet the demanding requirements of aerospace, defense and high performance (ADHP) products and systems.
Technical Library | 2020-10-27 02:02:17.0
Solder powder size is a popular topic in the electronics industry due to the continuing trend of miniaturization of electronics. The question commonly asked is "when should we switch from Type 3 to a smaller solder powder?" Solder powder size is usually chosen based on the printing requirements for the solder paste. It is common practice to use IPC Type 4 or 5 solder powders for stencil designs that include area ratios below the recommended IPC limit of 0.66. The effects of solder powder size on printability of solder paste have been well documented. The size of the solder powder affects the performance of the solder paste in other ways. Shelf life, stencil life, reflow performance, voiding behavior, and reactivity / stability are all affected by solder powder size. Testing was conducted to measure each of these solder paste performance attributes for IPC Type 3, Type 4, Type 5 and Type 6 SAC305 solder powders in both water soluble and no clean solder pastes. The performance data for each size of solder powder in each solder paste flux was quantified and summarized. Guidance for choosing the optimal size of solder powder is given based on the results of this study.
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.
Events Calendar | Wed Apr 20 00:00:00 EDT 2022 - Wed Apr 20 00:00:00 EDT 2022 | ,
Virtual Course: Selection Criteria of Surface Finish for Next Generation PCB Technologies
Events Calendar | Tue Feb 14 16:00:00 EST 2017 - Tue Feb 14 16:30:00 EST 2017 | San Diego, California USA
Invited Speaker at APEX 2017 - Managing the Diminishing Supply and Obsolescence of PCBs for Legacy Systems
Career Center | , California | Quality Control
Tammy T Vo P.O. Box 2213 (714) 254-5073 E-mail: nhutamvo@yahoo.com Position of Interest Senior Quality Inspector Aerospace Manufacturing. / Electronic PCBA/Advanced coating technologies Profile of Qualifications 12 years of experience wo
BGA Package Component Reliability After Long-Term Storage BGA Package Component Reliability After Long-Term Storage In 2008, the white paper Component Reliability After Long Term Storage was published in support of shelf life extension
Imagineering, Inc. | https://www.pcbnet.com/blog/advantages-and-disadvantages-of-polyimide-pcbs/
. It has a long life, is less brittle than rigid printed circuit board materials, and is resistant to heat. Advantages of Polyimide PCBs Although they may be more expensive than typical FR-4 materials, polyimide material is adept at conforming to unusual environments that would test the limits of more
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Life Science | Nordson ASYMTEK ASYMTEK Products Corporate | Global Directory | Languages Division Only All of Nordson Fluid Dispensing Systems Jets
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