High-level PCB is usually defined as 10-20 layers or more high-level multi-layer circuit boards. Compared with traditional FR4 PCB products, high-level PCB has the characteristics of multiple thicknesses, multiple layers, dense lines, multiple through holes, large cell sizes, and thin dielectric layers, and requires internal space, layer alignment, impedance control, and reliability. High; is mainly…
The PCB circuit board is a complete device only after PCB processing and can be used in application electronic products. The PCBA process is a combination of the SMT process and the DIP process. Today, we will share with you the steps involved in PCBA Electronics Manufacturing by Shenzhen PCB manufacturers. 1. Single-sided DIP cartridge…
How to Design The Vias in High-Speed PCB? Do the following as much as possible in the design: 1. Choose a reasonable size. For multi-layer general-density PCB design, it is better to use 0.25mm/0.51mm/0.91mm (drilled holes/pads/POWER isolation area) vias; for some high-density PCBs, 0.20mm/0.46 can also be used For vias of mm/0.86mm, you can also…
In order to ensure the reliable conduction effect of the double-sided circuit, the connecting holes on the board should be welded with wires first, and the protruding part of the connecting wire tip should be cut to avoid hurting the operator’s hand. This is the board connection preparation. So, what issues should be paid attention…
With the continuous development of the electronics industry, the technical level of PCB boards is also constantly improving. Common processes mainly include tin spraying, immersion gold, gold plating, OSP, etc. In fact, spraying is divided into HASL and Lead-Free HASL on PCB Board, so what is the difference between them? 1. From the surface of…
For general electronic products, FR4 epoxy glass fiber substrate is used, for use in higher ambient temperatures or for flexible circuit boards, polyimide fiberglass substrates are used, and for high-frequency circuits, PTFE fiberglass substrates are required; How to Choose PCB Materials and What Factors Should Be Considered? Electronic products with high heat dissipation requirements should…
Many people in the PCB class know that, do you know what interconnection methods it has? Electronic components and electromechanical components have electrical contacts, and the electrical connection between two discrete contacts is called interconnection. The electronic devices must be interconnected in accordance with the schematic circuit diagram in order to realize the predetermined function….
There are many kinds of surface treatments for Electronic PCB boards, such as: Immersion gold, Immersion silver, lead-free tin spray, lead tin spray, OSP, etc., so many kinds of surface treatments Why do you want to do this? Then why do PCB boards chose gold surface? So before we talk about why we need to…
In daily work, many PCBA processing requires a BOM list. Why is the BOM table so important in PCBA manufacturing? BOM is the meaning of the bill of materials. The BOM of a product indicates how many parts and accessories the product needs to assemble. All PCBA manufacturers need to purchase the materials needed for…
What are a Rigid PCB board and a flex FPC board? What is the difference between them? The PCB, the so-called printed circuit board, is usually called a hard board. It is a supporting body among electronic components and a very important electronic component. PCB generally uses FR4 as the base material, also called rigid…