Electronics Forum | Fri Dec 08 00:02:35 EST 2006 | Jack
Hi all, I found this article (Dealing with "the black pad defect)about reworking bare PCB with black pad symptom...Use HASL to treat black pad..Have you guys try this before?? www.smta.org/files/SMTAI01-Jay
Electronics Forum | Mon Mar 17 18:11:32 EST 2003 | davef
Converting to immersion silver is the best solution to the "black pad problem".
Industry News | 2003-03-14 08:18:03.0
The instruction is intended as a practical user's guide for determining if a failure is related to black pad.
Industry News | 2003-02-07 08:34:04.0
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Technical Library | 2013-01-17 15:34:33.0
The use of an electroless nickel, immersion gold (ENIG) surface finish comes with the inherent potential risk of Black Pad failures that can cause fracture embrittlement at the interface between the solder and the metal pad. As yet, there is no conclusive agreed solution to effectively eliminate Black Pad failures. The case studies presented are intended to add to the understanding of the Black Pad failure mechanism and to identify both the plating and the subsequent assembly processes and conditions that can help to prevent the likelihood of Black Pad occurring.
Technical Library | 2023-01-06 16:09:03.0
The 4-14 IPC Standards Committee recently created a revision to the IPC4552 specification for Electroless Nickel/Immersion Gold (ENIG) finished Printed Circuit Boards (PCB). Revision A brings a more comprehensive evaluation of metal layer thicknesses measurement, composition and introduces, for the first time, a quality aspect for nickel corrosion which has been historically connected to a defect called black line nickel or black pad.
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The PCB rework and hand soldering courses courses cover techniques of rework and repair of PCBs, BGAs and other electronics assemblies, and teach fundamentals of soldering of electronics assemblies.
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Grease Replacement Materials without Electrical Isolation Physical Properties Q-PAD II Q-PAD 3 Test Method Color Black Black Visual Thickness Inches .006/.0065 w/ac ±.001.005/.0055 (w/ac) ASTM D374 (mm) .152 ±.025 (.15
