This 4-layer Radio Frequency Microwave Board features cavities for SMA connectors and has an ENIG Finish
Electronics Forum | Wed Jan 30 15:46:32 EST 2013 | davef
First, look here [http://www.ti.com/lit/ug/snva500/snva500.pdf ] This is the actual pdf from TI, not some cheap-ass reproduction, like the link you gave us. Orange polygons [and other shapes] - copper covered with ENIG * On the edge of the board, bo
Electronics Forum | Mon Nov 28 09:46:24 EST 2005 | pjc
I have waved gold (ENIG) boards. That's a pretty hot pot at 260C, wow. I have used 245C with good results. All other parameters look OK a glance. Well, PCB temp looks a little hot too at 130C before pot. 90-100C is typical for most No-Clean flux. At
Industry News | 2010-09-29 02:16:12.0
STI Electronics, Inc., a full service organization providing training, electronic and industrial distribution, consulting, laboratory analysis, prototyping, and small- to medium-volume PCB assembly, announces that its Fine-Pitch SMT Kit is now available in both lead-free and tin-lead versions. The lead-free component option is available with the ENIG board finish.
Industry News | 2019-04-03 20:07:41.0
Practical Components is a leading international distributor of mechanical IC samples or “dummy” components that has added a new SMTA Solder Paste Test Vehicle for Miniaturized Surface Mount Technology (SMT) to its array of Dummy Components, Solder Training Kits and PCB Evaluation Kits.
Technical Library | 2018-07-11 22:46:13.0
For a demanding automotive electronics assembly, a highly thermal fatigue resistant solder alloy is required, which makes the lead-free Sn-Ag-Cu type solder alloy unusable. Sn-Ag-Bi-In solder alloy is considered as a high reliability solder alloy due to significant improvement in thermal fatigue resistance as compared to a standard Sn-Ag-Cu alloy. The alloy has not only good thermal fatigue properties but it also has superior ductility and tensile strength by appropriate addition of In; however, initial results indicated a sub-par performance in joint reliability when it is soldered on a printed circuit board (PCB) with Electroless Nickel Immersion Gold (ENIG) surface finish. Numerous experiments were performed to find out appropriate alloying element which would help improve the performance on ENIG PCBs. Sn-Ag-Bi-In solder alloys with and without Cu additions were prepared and then tests were carried out to see the performance in a thermal fatigue test and a drop resistance test.to investigate the impact of Cu addition towards the improvement of joint reliability on ENIG finish PCB. Also, the mechanism of such improvement is documented.
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I am working as lab chemist and also involved in troubleshooting and process control of various processes in pcb industry
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/ipc-standards-for-manufacturing-assembly_topic877_post9030.html
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Imagineering, Inc. | https://www.pcbnet.com/blog/understanding-the-pcb-fabrication-process-from-design-to-delivery/
can’t correct existing errors once the layers are bound together. A specialized machine performs an automated optical inspection (AOI) at this point, which compares the PCB with its extended Gerber design
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