Industry News | 2024-07-01 11:35:19.0
The Surface Mount Technology Association (SMTA) announces the release of several more photo libraries as part of a generous donation from renowned industry expert, Bob Willis.
Industry News | 2015-05-18 21:19:33.0
The SMTA Capital Chapter is pleased to announce it will welcome Denis Barbini, Universal Instruments Corporation, on June 9th to instruct a tutorial on Advanced SMT Technologies at ZESTRON Americas located at 11285 Assett Loop, Manassas, VA 20109. The tutorial is scheduled from 9:00 am to 4:30 pm and includes lunch. The following should attend: quality engineers, failure analysis engineers, reliability engineers, procurement specialists, design engineers, process engineers, project managers. Registration is required for this learning event.
Technical Library | 2019-10-21 09:58:50.0
An ACI Technologies customer inquired regarding printed circuit board(PCB) failures that were becoming increasingly prevalent after the SMT (surface mount technology) manufacturing process. The failures were detected by electrical testing, but were undetermined as to the location and specific devices causing the failures. The failures were suspected to be caused predominately in the BGA (ball grid array) devices located on specific sites on this 16 layer construction. Information that was provided on the nature of the failures (i.e., opens or shorts) included high resistance shorts that were occurring in those specified areas. The surface finish was a eutectic HASL (hot air solder leveling) and the solder paste used was a water soluble Sn/Pb(tin/lead).
Industry News | 2013-11-01 16:09:44.0
Eric Chason, Ph.D., professor of engineering at Brown University, will present his tin whisker research at the 7th International Tin Whiskers Symposium, November 12–13 in Costa Mesa, Calif., hosted by IPC with academic partner CALCE.
Industry News | 2012-03-26 15:58:58.0
Tin whisker growth, risk mitigation, detection and failure analysis will be the focus of the IPC Tin Whiskers Conference, April 17–19, 2012, in Ft. Worth, Texas.
Technical Library | 2019-06-21 10:39:15.0
Recently, an ACI Technologies (ACI) customer called to discuss failures that they had observed with some through-hole capacitor parts. The components were experiencing failures following vibration and accelerated stress testing. Upon receipt of the samples, ACI performed three levels of inspection and Energy Dispersive Spectroscopy (EDS) testing to investigate the root cause of the failures. These analyses enabled ACI to verify the elements comprising the solder joints and make the following recommendations in order to prevent future occurrences. The first inspection was to investigate the capacitor leads using optical microscopy, and no anomalies were found that could indicate bad parts from the vendor or improper handling prior to assembly. However, vertical fill in the barrel of the plated through-holes was too close to the IPC-A-610 minimum specification of 75% to determine a pass/fail condition, and therefore required further investigation.
Technical Library | 2020-12-07 15:26:06.0
Temperature cycling testing is a method of accelerated life testing done to PCCs that are exposed to normal operation temperature variations over its lifetime. During the testing, intermittent "open" failures can first occur at the hot and cold extremes of the test, exposing weaknesses in the design and assembly. A poor/weak solder joint fatigues, a via trace or barrel cracks, loose connections or a component fails all causing an intermittent open. When not at extreme temperatures, the PCC assembly relaxes, the "open" closes creating electrical connectivity. If you are monitoring the PCC under test in-situ you will know that an intermittent failure has occurred, and the test could be stopped for inspection. If in-situ monitoring was not implemented, you would not know if there were intermittent failures or not. The PCC gets powered up and works fine at room temperature.
Events Calendar | Wed Dec 06 00:00:00 EST 2017 - Wed Dec 13 00:00:00 EST 2017 | Rolling Meadows, Illinois USA
X-Ray of PCBs Webtorial
Industry News | 2018-10-18 09:34:29.0
Application of lead-free solder
Industry News | 2018-10-18 08:04:17.0
Influences of the solder material for the wave soldering machine soldering quality
