How to output gerber 274x format file from eagle ? 1. Why should output Gerber 274X format file for PCB manufacturing? Gerber X2 file there are stack up information, but some CAM software are not support it, means it is can not input to CAM software. 2. It is easy to do output gerber 274x…
Printed circuit board commonly used in the standard introduction 1) IPC-ESD-2020: Joint Criteria for Electrostatic Discharge Control Program Development. Including the design, build, implementation, and maintenance of the ESD control program. Based on the historical experience of certain military organizations and business organizations, guidance is provided for the handling and protection of ESD-sensitive periods. 2)…
For surface mount boards, especially for BGA and IC mounting, the via hole must be flat, positive and negative 1 mil, no red tin on the edge of the via hole; tin beads in the via hole, in order to reach the customer The requirements of the through hole plug hole process can be described…
PCB etching process and process control The process of printing a circuit board from a light plate to a display line pattern is a process of complex physical and chemical reactions. This paper analyzes its last step – etching. At present, the typical process of printed circuit board (PCB) processing is “graphic plating”. That is,…
The green color is a solder resist ink. The main components are resin, talcum powder, and pigment, as well as other colors such as red, yellow, black, etc. Green is the most widely used. The answer to this question (why are most of the boards green?) is as follows: Viewpoint 1. Generally speaking, the board-level…
What are the reasons for soldering blistering of circuit boards PCB circuit board soldering and blistering means that the circuit board is separated from the board or copper foil in a high temperature environment (above 250 °C), so that the solder resist and the flow blocking effect are lost. The occurrence of solder mask blistering…
Being able to apply and produce, and then become a formal and effective product is the ultimate goal of the PCB layout, the work of layout is a paragraph. Then, when laying out, what are the general points that should be paid attention to in order to make the documents you draw valid in line…
Reasons for instability of PCB electroless nickel plating solution First, the reason for the instability of electroless nickel plating solution When the gas slowly releases the plating solution from the inside of the plating solution and starts to decompose by itself, the gas is not only released on the surface of the plating member, but…
Factors affecting PCB prices When we design a project, we care more about layout and wiring, and often overlook the additional PCB manufacturing cost in the design. We discuss what factors in the design affect the price of pcb and avoid increasing costs for customers. Number of wiring layers: The number of layers is much…
About the relationship between PI and FPC boards PI refers to a polyimide resin material, which is now widely used in various fields and is a very good material. Some people call PI a symbolic material that promotes the reform of electronic products. . We mainly explain the location and role of FPC and PI….
PCB board is an important electronic component, and it is the mother body of all electronic components. It has become more and more complex since the beginning of the last century. From a single layer to double layer, four layers, and multiple layers, the design is also difficult. Increasing. Because both sides of the double-layer…
PCB through hole introduction Via is one of the important components of a multi-layer PCB. The cost of drilling is usually 30% to 40% of the cost of PCB board. Simply put, every hole in the PCB can be called a via. From the perspective of function, the vias can be divided into two categories:…
How to produce FPC double-sided anti-oxidation board Select materials This is one of the main factors affecting the production of FPC flexible boards, so the materials selected will affect the entire circuit board production process. Cutting and drilling This is a step that every FPC board must go through. In addition to the manual cutting…
Single-sided PCB process flow: Blanking → screen printing → etching → removal of printing materials → hole processing → printing mark → coated flux → finished product. The process flow of multilayer printed boards: Inner Material Processing → Positioning Hole Machining → Surface Cleaning → Inner Layer Traces and Patterns → Corrosion → Laminate Pretreatment…
Five steps of PCB copying PCB copy board, under the premise that there are already electronic products and circuit boards, use the reverse technology to reversely analyze the circuit board, and carry out the technical documents such as the PCB file, bill of materials and schematic diagram of the original product. The restoration operation, and…