Can PCB test points be a source of noise?
If I want to design a PCB with as much noise immunity as possible, should I leave off test points? Can PCB test points be a source of noise?
November 6, 2023
Oliver Smith
Technical Writer
Oliver is an experienced electronics engineer with over 7 years of experience developing products in IoT, consumer electronics, and medical devices. He is highly skilled in analog circuit design, embedded systems, PCB layout, firmware coding, and prototyping electronic products. Oliver’s expertise encompasses the full product development cycle, from concept to mass production. He holds a Master’s degree in Electrical Engineering and leverages his deep technical knowledge to deliver innovative electronic solutions.
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How do PCB manufacturers prevent solder from entering vias during wave soldering?
I have some PCBs that were wave soldered but the vias still remain open, they are not filled nor plugged form what I can see. I do not see any solder on the annular rings of the vias either. How do they go about doing so?
November 3, 2023
How can I tell whether an SMT/SMD capacitor is oriented with plates horizontal or vertical?
Is there an industry standard for showing how plates in the SMT cap are oriented? How can you tell if it is a square-rectanguloid instead of being flattish in one dimension?
November 3, 2023
Do ICs have a shelf life?
What I would like to know is if ICs also have a limited shelf life and if so, do some types suffer more than others?
November 2, 2023
Why should we bake bare PCB?
The assembly note states: Bake bare PCBs in a clean and well ventilated oven prior to assembly at 125*C for 24 hours. Why is this necessary?
November 2, 2023
Can leaded BGA chips be reflow soldered with lead-free process?
I know that using leaded process for lead-free BGA chips is not acceptable, because the solder balls of the BGA will not melt and the joint will be unreliable. But now BGA chip is only available in lead-free balls. is it ok to solder leaded BGA chips with a lead-free (thus, higher temperature) process?
November 1, 2023
What are the round pads on the bottom of a PCB?
There are several round pads on the PCB prototypes made by the manufacturer. They are marked Scx and labelled with TP. What are they?
November 1, 2023
Why is BGA (Ball Grid Array) socket not considered as an actual CPU socket?
I have a professional question about BGA package. Why is BGA (Ball Grid Array) socket not considered as an actual CPU socket? Anybody knows?
November 1, 2023
What is the recommendations of 2-4 mils for solder mask expansion. But why is it necessary?
I see recommendations of 2-4 mils for solder mask expansion. But why is it necessary?
October 31, 2023
