What is FPC flexible board ink? FPC is a flexible circuit board, and FPC flexible board ink is an ink with bending resistance. In the past, FPC was produced with cover film, that is, dry film. Now many flexible circuit boards are produced with photosensitive ink or thermosetting ink, so circuit board ink is also […]
1.FPC Board cut Except for some materials, the materials used in flexible printed boards are basically rolls. Since not all processes must be processed by the tape-and-reel process, some processes must be cut into sheets for processing, such as the drilling of metallized holes of double-sided flexible printed boards, which can only be drilled in […]
In general, the stack-up design mainly follows two rules: Each trace layer must have an adjacent reference layer (power or ground); The adjacent main power supply layer and ground layer should maintain a minimum distance to provide larger coupling capacitance; The stackup from two-layer board to eight-layer board is listed below for example: Lamination of […]
1. Introduction to Printed Circuit Board (PCB) 1.1 What is PCB PCB (Printed Circuit Board) is a printed circuit board, which is a support body for electronic components and a carrier for electrical interconnection of electronic components. Because PCBs are made using electronic printing techniques, they are called “printed” circuit boards. The main function of […]
The emergence of flexible and rigid boards provides a new connection method for the interconnection of electronic components. With the development of electronic information technology and people’s needs for electronic equipment, it tends to be light, thin, short, and multi-functional. Rigid-Flex printed circuit boards are designed to provide solutions, and act as replacements for rigid […]
The hole (via) is one of the important components of the multi-layer PCB circuit board, and the cost of drilling usually accounts for 30% to 40% of the cost of the PCB board. Simply put, every hole on a PCB can be called a via. In terms of function, vias can be divided into two […]
Flexible Printed Circuit (FPC) has the advantages of being soft, light, thin and flexible. With the rapid trend of light, thin, short and small electronic products, it has been widely used in notebook computers, Digital related, mobile phones, LCD monitors, etc. The traditional FPC board material is mainly based on the three-layer structure of PI […]
When designing a PCB, we often rely on previous experience and tips found online. Some rules are general at design time, and some rules can only be used for a specific design. For example, analog-to-digital converter PCB rules do not apply to RF and vice versa. However, certain guidelines can be considered general to any […]
With the popularity of fifth-generation mobile networks and the increase in signal transmission frequencies, issues related to signal integrity in PCBs have received more and more attention. In printed circuit design, back-drilled stubs have a great impact on high-frequency signals. Based on the simulation software H FSS, this paper establishes models of different back-drilling depths, […]
With the rapid update of electronic products, the printing of PCBs has expanded from the previous single-layer boards to double-layer boards and multi-layer boards with more complex high-precision requirements. Therefore, there are more and more processing requirements for circuit board holes, such as: the hole diameter is getting smaller and smaller, and the spacing between […]
1. Flexible circuit board FPC plating (1) Pretreatment of FPC electroplating The surface of the copper conductor exposed by the FPC coating process may be contaminated by adhesive or ink, as well as oxidation and discoloration caused by the high temperature process. A tight coating with good adhesion must remove the contamination and oxide layer […]
As a PCB design engineer, we all know that the impedance should be continuous. There is always a time when the impedance cannot be continuous in PCB design. What should I do at this time? About Impedance To clarify a few concepts first, we often see impedance, characteristic impedance, and instantaneous impedance. Strictly speaking, they […]