Category:PCB PCB Pad
Pad cratering is a mechanically induced fracture in the resin between copper foil and outermost layer of fiberglass of a printed circuit board (PCB). It may be within the resin or at the resin to fiberglass interface. Do you have ever problems about pcb pads? please talk here.
Mentor Graphics Corporation, (NASDAQ: MENT), the worldwide market and technology leader in printed circuit board (PCB) design-through-manufacturing software, announced the latest release of the PADS&r...(view more)
What should be solder paste stencil aperture proper size in comparison with PCB copper pad for lead free technology? When designing PCB foortprints I was using solder paste pad undersize of 2.5 mils (...(view more)
Hi folks, I hope you can help me on how to repair broken pcb pads.(view more)
Is anyone aware of some guidelines regarding through-hole in SMT pads? One of our designers wants to add through-hole leads in some SMT pads for an inductor. The size of the hole is 0.032 inches and t...(view more)
Please advice how can we reduce a delta T of 40 degres between pads with a seven zones reflow for a LF Assy. max 255 min 215 board size 3x5 inches.(view more)
We have received in one lot PCBs with defect of not wetting properly. Pads were finished with HASL but they were matte rather then shiny (attachment). For me looks like they are oxidized. Interesting ...(view more)
hi, the last post on pad cratering dates from 2012. We have (likely similar) problems with a RoHS 783 solder ball BGA size 29x29mm^2 (organic package BT), pitch is 1mm and solder ball diam is 0....(view more)
See them funky via pads ? What's your opinions ? Junk or acceptable ? Anyone know of an IPC manual that has pics and standards of defective and acceptable PCB's ?(view more)
High-speed signals have been a hot topic that can't be avoided by communication industries. With the increase on amount of transmitted information and transmission speed rate, high-speed signals have ...(view more)
After designing my custom PCB at first time,I've found a problem suddently.Some pads overlap on the PCB and become a large pad. I wonder whether I've made a mistake or not. If not, can I assert that i...(view more)