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GENERAL SERVICES GUIDES PRODUCTS
October 28, 2021
Solder Mask Rework at a BGA Site
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Now and then, an error will occur at the most inopportune time; in this case, it was in the design phase of the printed circuit board. Epoxy or mask needs to be applied to the conductor between the BGA pad and connecting plated hole or via. When circuit boards are in the prototype phase, it is not uncommon for sockets to be used at BGA sites. Design Engineers must layout the BGA sites to meet the requirements of the selected test socket. Many of these sockets rely on a flat surface that precludes the use of ...
Feature Story
Is Solder Mask Considered an Insulator
Ask the Experts
If solder from a PTH lead, on the source side, touches solder mask that is over a copper ground plane, but not electrically shorted: is this a defect per IPC standards due to violation of minimum electrical clearance ...
Ask the Experts
Circuit Technology Center
Circuit Technology Center
Having a Hard Time Sourcing Components?
Consider Salvaging Them!

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We've all seen and read the news stories in the last year about how the worldwide pandemic has disrupted supply chains, causing product delays and shortages in many industries. Salvaging or harvesting valuable and hard-to-find components from scrap, obsolete or unneeded printed circuit assemblies is a viable option many companies are contemplating to help bridge the supply gap.
Learn More
Isolating a Plated Hole From Ground
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Once involved in rework and repair, you quickly realize that all the tools you need to get the job done are just not always available. It occurs to you that unless you're prepared to make the tool yourself or modify an existing one, you won't have it, plain and simple. Isolating surface pads from ground or other connections is a scenario played out with remarkable ...
Feature Story
Circuit Technology Center
Circuit Technology Center
Superconducting Coil Transmits More Energy with Few Losses
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Physicists have developed a superconducting coil capable of transmitting more than five kilowatts of contactless electricity with only small losses ...
Technology Briefing
Cartoon
"This is my favorite relaxation tape. It's the sound of ocean waves crashing against the shore, snatching my boss's body off his beach chair and carrying him out to sea."
Copyright © Randy Glasbergen
Trivia
What are the two dimensions apart from length and width?
See the answer below.
Quote of the Week
"Due to recent budget cuts and the rising cost of electricity, gas, oil, as well as current market conditions, The Light at the End of the Tunnel has been turned off."
Anonymous