Electronics Forum | Tue Jul 25 13:40:04 EDT 2017 | davegoad
I have some CERSOT-23 transistor packages with castellated terminals. The 4th lead (drain castellation) is electrically connected to the top of the device by the castellation. The castellation goes up the ceramic body and contacts the metal package
Electronics Forum | Tue Jul 25 14:30:04 EDT 2017 | emeto
Looks like you have a great wetting of your paste :). Once body has been in contact with molten solder, the package could suffer damages on the body(outside and inside) and on the circuitry inside. It is considered a defect. I have seen that before a
Industry News | 2011-08-24 17:13:21.0
The IPC Conference on Reliability: Assembly Process for a Reliable Product will be held November 1-2, 2011, in Irvine, Calif. The conference will address reliability issues that arise at the assembly level, dedicating half-day programs on new developments in each of three key areas: materials, processes, and test and inspection.
Industry News | 2010-09-27 23:01:06.0
Christopher Associates/Koki Solder announces that Jasbir Bath will present a paper titled “An Investigation into the Development of Lead-Free Solder Paste for Package on Package (PoP) Component Manufacturing Applications” at the upcoming SMTAI Technical Conference, scheduled to take place October 25-28, 2010 at the Walt Disney World Swan and Dolphin Resort in Orlando, FL.
Technical Library | 2012-10-18 21:58:51.0
First published in the 2012 IPC APEX EXPO technical conference proceedings. In this paper, we report on a comprehensive study regarding the morphology evolution and voiding of SnAgCu solder joints on the central pad of two different packages – QFN and an Agilent package called TOPS – on PCBs with a Ni/Au surface finish.
EKT AOI machine application: inspection after stencil printing, pre/post reflow oven, pre/post wave soldering?FPC etc. Stencil printing: Solder unavailability, insufficient or excessive solder, solder misalignment, bridging, stain, scratch etc. Compo
SMTnet Express, April 20, 2017, Subscribers: 30,402, Companies: 10,575, Users: 23,153 High Throw Electroless Copper - Enabling new Opportunities for IC Substrates and HDI Manufacturing Tobias Sponholz, Lars-Eric Pribyl, Frank Brüning, Robin Taylor
Surface Mount Technology Association (SMTA) | https://www.smta.org/knowledge/proceedings_abstract.cfm?PROC_ID=5246
The Role of Nickel in Solder Alloys - Part 2. The Effect of Ni on the Integrity of the Interfacial Intermetallic in Sn-Based/Cu Substrate Solder Joints 中文
Heller 公司 | http://hellerindustries.com.cn/Vacuum-Void-Reduction-Reflow.pdf
The Effect of Vacuum Reflow Processing On Solder Joint Voiding And Thermal Fatigue Reliability To be published in the Proceedings of SMTA International, September 17 - 21, 2016, Rosemont, IL
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