What are the main defects that the Wellman X-ray inspection system can find on the electrolytic capacitor?
There are two main types of capacitors used on printed circuit boards (PCB), Multi-layer Ceramic Capacitors (MLCC) and electrolytic capacitors. Today we mainly talk about electrolytic capacitors. The capacitance per unit volume of electrolytic capacitors is [...]
LED light SMD LED lights are the most important and common components in LED related products such as LED strips and LED boards. The welding quality of SMD LED light directly affects the quality [...]
What are the main defects that the Wellman X-ray inspection system can find on the through-hole PTH of PCB?
PTH (Plating Through-hole) is a common process on a printed circuit board (PCB), but the surface of the hole drilled directly on the PCB is only resin, which is not conductive. Therefore, we plated a [...]
Flat no-leads packages such as quad-flat no-leads (QFN) and dual-flat no-leads (DFN) physically and electrically connect integrated circuits to printed circuit boards. Flat no-leads, also known as micro leadframe (MLF) and SON (small-outline no [...]
In the previous article, we talked about the principle of a closed microfocus X-ray tube for X-ray inspection equipment. Correspondingly, there is an open microfocus X-ray tube. They are distinguished according to how the [...]
What is the focal spot size and why it matters in the PCB X-ray inspection system? First of all, let's understand the focal spot size. This parameter comes from the X-ray source. It affects [...]