What is a 4-Layer PCB Stackup
A 4-layer PCB Stackup is a multilayer PCB that consists of multiple layers of copper and insulating materials stacked one above the other. For maximum efficiency and minimum losses and EMI, it is important to plan the right stack up of layers before starting the fabrication process. 4-layer PCB is the most common stack-up arrangement used in modern electronics.
A 4-layer PCB stack up consists of top and bottom layers, a core (copper-clad layer), and an insulating layer also called prepreg made of a dielectric material like glass fiber/weave cloth. The top and bottom layers are made of copper foils, which are then laminated and etched to create slots for mounting the components. The core layer is made up of prepreg sandwiched between two copper foils. These top and bottom layers, core layer, and prepreg are bound together in such a way that no air is trapped between them.
As mentioned in the previous paragraph, the 4-layer PCB comprises the top and bottom layers, prepreg and a core layer. Now, the top and bottom layers, made of copper foils are used as signal planes. After lamination, the desired slots are etched for the placement of components and vias, which are electroplated holes connecting different planes in the PCB. The top side of the core is used as a ground plane, while the bottom side is used as a power plane. To reduce EMI and crosstalk, it is advisable to place the ground plane above the power plane. This will help in the reduction of overlapping and interference of the magnetic fields created by the signal and the current planes. The ground plane also helps in routing the return current and dissipation of heat.
Other news about S&L
- Why Metal core PCBnecessary for PCB circuit boards?
- High frequency PCB:What makes it High frequency conducting circuit
- Flexible PCB supplier china :Advantages of FPC in power battery modules
- FPC manufacturer:Flexible PCB Frequently Asked Questions
- PCB supplier China:FPC vs PCB – what is the difference?
- PCB manufacturer China:What’s the type of PCB surface treatment?
- Why are High frequency PCB boards so popular?
- FPC supplier:What Is A Touch Screen FPC?
- PCB manufacturer China:How does the circuit board work?
- Top 5 Advantages of Metal core PCBs
Your browsing history
- PCBmanufacturerChina:China's automobile export value increases RMB442.7 billion in the first eight m
- Multi-layer PCB---Happy Thanksgiving Day!
- FPC supplier:Application of Flex PCB
- WHAT IS METAL CORE PCB (MCPCB) ?
- Metal core PCB:What is a PCB Stencil
- What is Backdrilling in PCB Fabrication in PCB manufacturer China
- See us at IPC APEX 2017
- PCB factory china: Spring Festival is coming, red envelope war, who can win?
- PCB factory china:What Are The Advantages Of Multilayer PCBs
- What are the advantages of Automotive PCB application for automotive industry
A total of -comments【I want to comment】