Technical Library | 2019-05-29 10:38:59.0
Decapsulation, or de-cap, is a failure analysis technique which involves the removal of material packaging from an integrated circuit (IC). After de-cap, visual inspection by optical microscopy of the internal circuitry may reveal areas where damage is most likely to have occurred. In addition, scanning electron microscopy (SEM) with energy dispersive x-ray spectroscopy (EDS) can identify the composition of any anomalies present after de-cap under higher magnification. The removal process of package material can be done either mechanically or chemically depending on the design of the integrated circuit. With ceramic packaging, de-cap is usually done mechanically by chiseling off the top with a fine razor and small hammer. For plastic packaging, de-cap requires chemical etching by strong acids. In this Tech Tips article, de-cap by chemical etching will be outlined step by step.
Technical Library | 2020-05-08 18:22:31.0
A customer contacted the Helpline to perform analysis on a lead-free assembly which exhibited intermittent functionality. The lead-free assembly exhibiting intermittent functionality when pressure was applied to the ball grid array (BGA) packages. Industrial adaptation of a Restriction of Hazardous Substances (RoHS) compliant solder standard has created a new host of failure modes observed in lead-free assemblies. Pad cratering occurs when fractures propagate along the epoxy resin layer on the underside of the BGA connecting pads. While originating from process, design, and end use conditions, it is the combination of a rigid lead-free solder with inflexible printed circuit board (PCB) laminates that has advanced the prevalence of this condition. Pad cratering is simply the result of mechanical stress exceeding material limitations.
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SMTA California Technology Day
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Webinar: Overcoming Challenging X-Ray Problems
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Optimizing Conformal Coating Coverage for Improved Environmental Corrosion Protection - Free Webinar
ACI Technologies Inc. (ACI) is a scientific research corporation dedicated to the advancement of electronics manufacturing processes and materials for The Department of Defense and industry. This video provides an overview of our commercial service
ACI Technologies Inc. (ACI) is a scientific research corporation dedicated to the advancement of electronics manufacturing processes and materials for The Department of Defense and industry. This video provides an overview of our commercial service
Parts & Supplies | SPI / Solder Paste Inspection
Quick programming, friendly programming interface Multiple measurement methods True one-button measurement Eight-way motion button, one-click focus Adjustable scanning pitch Solder paste 3D simulation function Powerful SPC function MARK
Industry News | 2010-05-30 23:23:13.0
Minneapolis, MN - The Surface Mount Technology Association (SMTA) announces the Call for Papers for the 2011 Pan Pacific Microelectronics Symposium, which will be held January 18-20, 2011 on the Big Island of Hawaii. The symposium focuses on the critical business markets and technologies of microelectronic packaging, interconnection, microsystems technology and assembly. The deadline for abstracts is July 16, 2010.
