| July 15, 2019
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A customer identified a design error involving two component patterns on the secondary side of a circuit board. Two circuits were incorrectly routed. Although many of the boards were completely assembled, a large percentage of circuit boards were partially assembled leaving the effected site vacant. Two rework methods were proposed. For those boards that were completely assembled, the most efficient method was to remove the component, a 14 pin gull wing device and make a series of 4 circuit cuts. Following the circuit cuts, the 14 pin ...
Feature Story
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Which of the following do you recommend when reballing BGA components? Reballing with solder paste and solder spheres, or with solder spheres only? Would you change the process depending on the size of the BGA component or number ...
Ask the Experts
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The Circuit Bond Kit contains 10 packages of clear, low viscosity, superior strength adhesive, precisely measured in two-compartment plastic packages. They are easy to use and there is no measuring. Once cured, this adhesive makes an excellent electrical insulator with good high temperature, mechanical and impact resistance properties.
Circuit Bond can be used to repair scratches and burns in circuit board base materials and repair damaged solder mask. The kit also contains mixing sticks, mixing cups and foam swabs.
LEARN MORE ...
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A manufacturer of outdoor electronic billboards had hundreds of circuit board assemblies that were returned from the field. They all required the removal and replacement of a 1500 faulty 44 pin fine pitch QFP devices. Normally this would be a relatively straightforward rework project. In this case however, the boards were completely encapsulated with a 0.20" thick layer of silicone potting gel, making for a significant ...
Feature Story
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Each year, counterfeit goods cost billions of dollars in economic losses. These knock-offs, typically of inferior quality, often masquerade as luxury brands. Manufacturers have tried to incorporate unique tags or bar codes to verify a product's authenticity, but counterfeiters often figure out how to copy these ...
Technology Briefing
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Trivia
Is pi a whole, imaginary, rational or irrational kind of number?
See the answer below.
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