New Equipment | Rework & Repair Equipment
BEST HeatShield Gel™ is a thermal shield water-based gel designed to be used in the PCB rework/repair or board assembly areas in order to provide thermal protection of electronic components. It is truly a revolutionary means to protect components. It
New Equipment | Assembly Services
S-Bond® solders are unique in their ability to provide a high performance thermal joint between these materials. S-Bond materials offer approximately 10 times the thermal conductivity of most thermal epoxies along with the ability to bond in air with
Electronics Forum | Mon Jan 19 14:54:38 EST 2004 | cyber_wolf
How did you come to the conclusion that you are having a cold joint problem. Just by appearance ? As Dave stated if you have any of the metals that he listed in the joints they will appear to be dull and grainy sometimes. But... Dave, I will have t
Electronics Forum | Tue Apr 13 08:21:05 EDT 2010 | esca
Hi manchella, After ATC test, two different failure modes can be present: solder FATIGUE (into bulk) or BRITTLE INTERMETALLIC fracture. So, first you have to verify this. Moreover, which brand of SMT paste have you used ? The crack into solder joint
Used SMT Equipment | Soldering Equipment/Fluxes
Versaflow Selective soldering Selective Soldering Process Advantages: Better, Faster, Cleaner & Cheaper! . consistent LF solder joint quality & significant reduction of DPM . No re-melting of top side SMD components, as with wave soldering . PCB
Industry News | 2003-06-23 08:49:39.0
Three Organizations from the US, Europe and Japan to
Technical Library | 2023-01-17 17:19:44.0
A test program was developed to evaluate the effectiveness of vacuum reflow processing on solder joint voiding and subsequent thermal cycling performance. Area array package test vehicles were assembled using conventional reflow processing and a solder paste that generated substantial void content in the solder joints. Half of the population of test vehicles then were re-processed (reflowed) using vacuum reflow. Transmission x-ray inspection showed a significant reduction in solder voiding after vacuum processing. The solder attachment reliability of the conventional and vacuum reflowed test vehicles was characterized and compared using two different accelerated thermal cycling profiles. The thermal cycling results are discussed in terms of the general impact of voiding on solder thermal fatigue reliability, results from the open literature, and the evolving industry standards for solder voiding. Recommendations are made for further work based on other void reduction methods and additional reliability studies.
Technical Library | 2023-01-17 17:22:28.0
The impact of voiding on the solder joint integrity of ball grid arrays (BGAs)/chip scale packages (CSPs) can be a topic of lengthy and energetic discussion. Detailed industry investigations have shown that voids have little effect on solder joint integrity unless they fall into specific location/geometry configurations. These investigations have focused on thermal cycle testing at 0°C-100°C, which is typically used to evaluate commercial electronic products. This paper documents an investigation to determine the impact of voids in BGA and CSP components using thermal cycle testing (-55°C to +125°C) in accordance with the IPC- 9701 specification for tin/lead solder alloys. This temperature range is more typical of military and other high performance product use environments. A proposed BGA void requirement revision for the IPC-JSTD-001 specification will be extracted from the results analysis.
Lyra Reflow Oven is a soft soldering that realizes the mechanical and electrical connection between the solder ends of surface mount components or the pins and the printed board pads by remelting the solder paste pre-distributed on the printed board
Career Center | la jolla, California USA | Engineering
More than 18 years experience in AOI. Refer to my resume for more details.
Thermal Cycle Reliability Study of Vapor Phase BGA Solder Joints SMTnet Express September 13, 2012, Subscribers: 25475, Members: Companies: 8976, Users: 33645 Thermal Cycle Reliability Study of Vapor Phase BGA Solder Joints First published
SMTnet Express, August 17, 2017, Subscribers: 30,720, Companies: 10,649, Users: 23,665 The Effect of Vacuum Reflow Processing On Solder Joint Voiding And Thermal Fatigue Reliability Richard Coyle, Richard Popowich, Charmaine Johnson - Nokia Bell
Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2018/07/Vacuum-Void-Reduction-Reflow.pdf
., Osaka, Japan 6Heraeus, Frankfurt, Germany 7Indium Corp., Clinton, NY, USA richard.coyle@nokia-bell-labs.com david.hillman@rockwellcollins.com ABSTRACT A test program was developed to evaluate the effectiveness of vacuum reflow processing on solder joint voiding and subsequent thermal cycling performance
| http://etasmt.com/cc?ID=te_news_industry,3761&url=_print
. Since bulk of real-life solder joint failures are caused by the mismatch between the coefficients of thermal expansion between the component and the substrate, board level thermal cycling in air has
