Industry Directory | Manufacturer
We are Registered in 2015, Kms Electronics has immense expertise in supplying of electronic voltage Stabilizer, PCB Assembling, EMS services etc. our company is located in Chennai, Tamil Nadu and is one of the leading supplier
New Equipment | Rework & Repair Equipment
BEST HotDots™ are designed to simply and cleanly attach jumper wires on a board. HotDots™ are built to survive at high temperature as both the adhesive and the polyimide material are designed to withstand wash and reflow temperatures. HotDots™ are a
Quick Turn PCB Prototype Manufacturer Quickturn PCB quote please sent E-mail to quotes@huanyupcb.com. Why choose us? 1.The world top 500 PCB supplier.( Samsung DELL Alcatel-Lucent Huawei Lenovo FOXCONN ASUS etc ) 2.Over 15+ Years of PCB Expertise
Electronics Forum | Sun Nov 01 01:33:52 EST 2009 | isd_jwendell
Just my opinion: Top pic - Solder mask registration WAY too far off, without a doubt I would reject. Bottom pic - I would worry that there was/is a contamination that caused the poor looking mask. This may be cosmetic only, but unknown. I would rej
Electronics Forum | Wed Jan 10 13:22:09 EST 2018 | tozitom
Thanks, You're right, mid scale for me is something that would be probably very small scale for som companies... What I need is to produce 10.000 units a month until the end of the year, probably more depending on sales.
Industry News | 2016-06-27 14:59:09.0
GPD Global introduces the NEW TempView Thermal Imaging System that ensures the success of heated dispensing processes like Underfill, Encapsulations, Dam and Fill, and more. The TempView Thermal Imaging System monitors the temperature of the entire substrate for complete heat profile characterization. Regions of the product may be selected for monitoring during the heating process. Now you can accurately monitor temperature of specific devices to be sure they are up to temperature before starting a process.
Industry News | 2017-04-11 21:19:32.0
GPD Global offers versatile large format inline dispensing systems and stand-alone liquid dispense technologies for maximizing product yield. This is the largest standard PCB dispensing system platform in the industry.
Parts & Supplies | Pick and Place/Feeders
more than we can offer contact person:banny chen mail:zksale@hysmt.cn skype:miayuan8 motor JUKI KE730 Z Axis Motor L404-151EL8 JUKI KE730 T Axis Motor L402-021EL0 23W 24V 1.9A JUKI KE750 X Axis Motor TS4513N1820E200 E9611721000 JUKI K
Parts & Supplies | Pick and Place/Feeders
more than we can offer contact person:banny chen mail:zksale@hysmt.cn skype:miayuan8 motor JUKI KE730 Z Axis Motor L404-151EL8 JUKI KE730 T Axis Motor L402-021EL0 23W 24V 1.9A JUKI KE750 X Axis Motor TS4513N1820E200 E9611721000 JUKI K
Technical Library | 2016-11-30 15:53:15.0
The use of microvias in Printed Circuit Boards (PCBs) for military hardware is increasing as technology drives us toward smaller pitches and denser circuitry. Along with the changes in technology, the industry has changed and captive manufacturing lines are few and far between. As PCBs get more complicated, the testing we perform to verify the material was manufactured to our requirements before they are used in an assembly needs to be reviewed to ensure that it is sufficient for the technology and meets industry needs to better screen for long-term reliability. The Interconnect Stress Testing (IST) protocol currently used to identify manufacturing issues in plated through holes, blind, or buried vias are not necessarily sufficient to identify problems with microvias. There is a need to review the current IST protocol to determine if it is adequate for finding bad microvias or if there is a more reliable test that will screen out manufacturing inconsistencies. The objective of this research is to analyze a large population of PCB IST coupons to determine if there is a more effective IST test to find less reliable microvias in electrically passing PCB product and to screen for manufacturing deficiencies. The proposed IST test procedure will be supported with visual inspection of corresponding microvia cross sections and Printed Wiring Assembly (PWA) acceptance test results. The proposed screening will be shown to only slightly affect PCB yield while showing a large benefit to screening before PCBs are used in an assembly.
Technical Library | 2020-10-27 02:07:31.0
For companies that choose to take the Pb-free exemption under the European Union's RoHS Directive and continue to manufacture tin-lead (Sn-Pb) electronic products, there is a growing concern about the lack of Sn-Pb ball grid array (BGA) components. Many companies are compelled to use the Pb-free Sn-Ag-Cu (SAC) BGA components in a Sn-Pb process, for which the assembly process and solder joint reliability have not yet been fully characterized. A careful experimental investigation was undertaken to evaluate the reliability of solder joints of SAC BGA components formed using Sn-Pb solder paste. This evaluation specifically looked at the impact of package size, solder ball volume, printed circuit board (PCB) surface finish, time above liquidus and peak temperature on reliability. Four different BGA package sizes (ranging from 8 to 45 mm2) were selected with ball-to-ball pitch size ranging from 0.5mm to 1.27mm. Two different PCB finishes were used: electroless nickel immersion gold (ENIG) and organic solderability preservative (OSP) on copper. Four different profiles were developed with the maximum peak temperatures of 210oC and 215oC and time above liquidus ranging from 60 to 120 seconds using Sn-Pb paste. One profile was generated for a lead-free control. A total of 60 boards were assembled. Some of the boards were subjected to an as assembled analysis while others were subjected to an accelerated thermal cycling (ATC) test in the temperature range of -40oC to 125oC for a maximum of 3500 cycles in accordance with IPC 9701A standard. Weibull plots were created and failure analysis performed. Analysis of as-assembled solder joints revealed that for a time above liquidus of 120 seconds and below, the degree of mixing between the BGA SAC ball alloy and the Sn-Pb solder paste was less than 100 percent for packages with a ball pitch of 0.8mm or greater. Depending on package size, the peak reflow temperature was observed to have a significant impact on the solder joint microstructural homogeneity. The influence of reflow process parameters on solder joint reliability was clearly manifested in the Weibull plots. This paper provides a discussion of the impact of various profiles' characteristics on the extent of mixing between SAC and Sn-Pb solder alloys and the associated thermal cyclic fatigue performance.
Hot Sale pcb Push-up stacker for chip mounter Assembly Line Product introduction: 1.This equipment is used to collect bare PCBs at the end of SMT production line 2.Stable and reliable PLC control system; 3.Easy to operate LED touch screen control
Events Calendar | Thu Jun 08 00:00:00 EDT 2023 - Thu Jun 08 00:00:00 EDT 2023 | ,
SMTA Workforce Development Webinar: PCB Design Courses and Careers in PCB Design
Career Center | , India | Engineering,Production,Quality Control,Research and Development,Sales/Marketing,Technical Support
I am working as lab chemist and also involved in troubleshooting and process control of various processes in pcb industry
Career Center | BANGALORE, India | Engineering,Maintenance,Production
Hi, I have 8 years experience in electronics manufacturing company. I have good knowledge in SMT process and equipment maintenance.i successfully completed more than 200 NPI's. I have good knowledge in SMT machine programming and maintenance
SMTnet Express, March 19, 2015, Subscribers: 22,524, Members: Companies: 14,266, Users: 37,922 Exceptional Optoelectronic Properties of Hydrogenated Bilayer Silicene Bing Huang, Hui-Xiong Deng, Hoonkyung Lee, Mina Yoon, Bobby G. Sumpter, Feng Liu
SMTnet Express, February 19, 2015, Subscribers: 22,404, Members: Companies: 14,224, Users: 37,735 Numerical Study on New Pin Pull Test for Pad Cratering Of PCB Billy Hu, Jesus Tan - Flextronics Pad cratering is an important failure mode besides
| https://www.eptac.com/blog/quality-standards-in-cable-harness-assembly-quality-control-measure
: Provides a secure connection and prevents wire strands from fraying or breaking. Challenges in Assembly The process of assembling a cable harness is intricate and comes with its set of challenges
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/ipc2581_topic886_post3274.html
? Currently im in negotiations with our EMS companies to get DFM/DFA reporting, most of them have never heard of IPC-2581, and are even reluctant to go with ODB
Products, services, training & consulting for the assembly, rework & repair of electronic assemblies. BGA process experts. Manufacturers Rep, Distributor & Service Provider for Seamark/Zhuomao and Shuttle Star BGA Rework Stations.
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