How do PCB manufacturers prevent solder from entering vias during wave soldering?

1 year ago

I have some PCBs that were wave soldered but the vias still remain open, they are not filled nor plugged…

How can I tell whether an SMT/SMD capacitor is oriented with plates horizontal or vertical?

1 year ago

Is there an industry standard for showing how plates in the SMT cap are oriented? How can you tell if…

How to Prevent PCB Delamination: A Definitive Guide

1 year ago

Printed circuit boards (PCBs) are at the heart of electronics manufacturing. However, PCBs can sometimes experience failures due to a…

Do ICs have a shelf life?

1 year ago

What I would like to know is if ICs also have a limited shelf life and if so, do some…

Why should we bake bare PCB?

1 year ago

The assembly note states: Bake bare PCBs in a clean and well ventilated oven prior to assembly at 125*C for…

Can leaded BGA chips be reflow soldered with lead-free process?

1 year ago

I know that using leaded process for lead-free BGA chips is not acceptable, because the solder balls of the BGA…

What are the round pads on the bottom of a PCB?

1 year ago

There are several round pads on the PCB prototypes made by the manufacturer. They are marked Scx and labelled with…

Why is BGA (Ball Grid Array) socket not considered as an actual CPU socket?

1 year ago

I have a professional question about BGA package. Why is BGA (Ball Grid Array) socket not considered as an actual…

PCB Lamination: An Introduction to Materials and Process

1 year ago

PCB lamination is a critical step in PCB fabrication, which involves “sandwiching” a core layer containing the circuitry between sheets of…

What is the recommendations of 2-4 mils for solder mask expansion. But why is it necessary?

1 year ago

I see recommendations of 2-4 mils for solder mask expansion. But why is it necessary?