Void Defect: Weak agitation -> Review spray pump settings / Nozzle cleaning / Filter replacement. Weak agitation accelerates detachment near the hole's opening, making voids more likely to form. If the nozzle and filter inlet are blocked, agitation weakens, leading to void formation. High current density -> Reduce current density. High current density accelerates detachment near the hole's openi..

Today, we will delve into the electroplating process as part of the substrate plating stages. Electroplating involves using electro-deposition to grow a thin copper (Cu) layer on top of the chemically deposited layer. This process enhances reliability. Electroplating Process Overview: It involves introducing a plating solution containing Cu ions and supplying electrons to the plating solution to..

"Mag" stands for magnification and zoom. Moving to the desired position can be done by clicking the mouse wheel. A higher scan speed reduces noise but results in slower image output. Lower speeds generate more noise but produce faster images. The STG incident angle refers to the angle at which the electron beam is incident. This button is usually not adjusted. Pressing the "auto" button adjusts ..

Operating Instructions for Scanning Electron Microscope (SEM), Part 3 Continuing from Part 2 of the SEM user manual, today we will delve into the actual imaging techniques. Rather than focusing on the sequence, let's concentrate on the meanings of each button. 3. Actual Imaging Once the vacuum state is achieved, the "beam on" indicator will light up, and you can proceed with the actual imaging. ..

2. Creating Vacuum in SEM Once you have completed these two steps, you are ready to place the object into the SEM machine. Open the SEM machine, place the object inside, and ensure that the door is securely closed to establish a proper vacuum. Next, press the "pump" button to initiate the vacuum. However, if the vacuum is not properly established, there could be two potential causes: The door is..

Scanning Electron Microscope (SEM) is an electron microscope that uses an electron beam to obtain the surface of a specimen, and it has superior resolution compared to an optical microscope. Today, we will explore the usage of SEM, specifically focusing on the initial procedures. Process before inserting into SEM machine: I take SEM images of molded circuit boards. Since the molding itself is an..