Technical Library | 2020-11-09 16:59:53.0
A customer contacted ACI Technologies regarding a high failure rate of their assemblies. They provided assemblies to be X-rayed and inspected for the purpose of identifying any process related issues such as (but not limited to) solder and assembly workmanship and evidence of damage due to moisture related problems during reflow (a.k.a. "popcorning"). Moisture damage usually appears as physical damage to the component. The first indication of moisture damage would be externally observable changes to the package in the form of bulging or fractures to the outer surface of the component, an example of which is shown in Figure 1. Internally observable indicators of moisture damage typically include fractures to the die inside the package and lifted or fractured wire bonds. These conditions would be apparent during transmissive X-ray inspection. Another symptom of moisture related damage would be inconsistent solder joint sizes that result from package deformation during the liquidus phase of the reflow process. None of these indicators of moisture related damage were present on the customer samples.
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BGA & Area Array Failures, Causes & Corrective Actions Online Webinar
I.C.T-AI-4540 | Visual Optical System DIP Inverted Camera Online AOI Machines Overview Introduction: DIP Inverted Camera Online AOI AI-4540(After THT Soldering) I.C.T DIP AOI captures board image in real time by high precision color indust
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.
Industry News | 2015-06-11 22:59:06.0
The SMTA International Technical Committee has finalized their best program to date and registration is now open. The conference will include 130 papers, 19 short courses, and three focused symposiums. Start planning now to attend SMTA International this fall!
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Industry News | 2015-06-17 14:05:18.0
The SMTA is pleased to announce that the program for SMTA International is finalized and available on-line at www.smta.org/smtai and registration is open. The conference will be held at the Donald Stephens Convention Center in Rosemont, Illinois on September 27 - October 1, 2015. This year's program allows the attendee to choose from 19 courses, 120 technical papers, three focused symposia, and numerous complimentary offerings throughout the conference and exhibition
solder paste printing is a critical step in the SMT PCB production, Since the solder paste is used to directly form the soldering joint, the quality of solder paste printing affects the performance and reliability of the surface mount assembly,high q
Industry News | 2024-04-29 03:28:04.0
In the dynamic world of Surface Mount Technology (SMT), precision and efficiency are paramount. Manufacturers worldwide seek inspection solutions that enhance accuracy and streamline production processes. Enter SMT AOI AI Inspection Technology – an innovative solution that combines cutting-edge artificial intelligence algorithms with advanced inspection capabilities.
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