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Printed Circuit Board | Plating Through Hole, Blind hole, Buried hole
Printed circuit board is made up of layers of copper foil circuits, and the connections between different circuit layers rely on these "vias". This is because today's circuit board manufacturing uses drilled holes to connect different circuits. Between the circuit layers, it is similar to the connection channel of the multi-layer underground waterway. Friends who have played the "Brother Mary" vid...
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Printed Circuit Board | Material, FR4
What we often refer to is "FR-4 Fiber Class Material PCB Board" is a code name for the grade of fire-resistant materials. It represents a material specification that the resin material must be able to extinguish itself after being burned. It is not a material name, but a kind of material. Material grade, so there are many types of FR-4 grade materials used in general circuit boards at present, but...
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Impedance Control Testing of PCB Board
TDR testing is currently mainly used in battery circuit board manufacturers' PCB (printed circuit boards) signal lines and device impedance testing. There are many reasons that affect the accuracy of TDR testing, mainly reflection, calibration, reading selection, etc. Reflection will cause serious deviations in the test value of the shorter PCB signal line, especially when the TIP (probe) is used ...
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Printed Circuit Board| Via VS Pad
Vias in the circuit board are called vias, which are divided into through holes, blind holes and buried holes(HDI Circuit Board). They are mainly used to connect wires on different layers of the same network and are generally not used as soldering components; The pads in the circuit board are called pads, which are divided into pin pads and surface mount pads; pin pads have solder holes, which are...
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Shelf life of PCB? Baking time and temperature?
The storage time of PCB, and the temperature and time of using industrial oven to bake PCB are all regulated by the industry. What is the shelf life of PCB? And how to determine the baking time and temperature? 1. The specification of PCB control 1. PCB unpacking and storage (1) The PCB board can be directly used online within 2 months of the manufacturing date of the sealed and unopened PCB board...
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Introduction to plasma processing on PCB boards
With the advent of the digital information age, the requirements of high-frequency communication, high-speed transmission, and high-confidentiality of communications are becoming higher and higher. As an indispensable supporting product for the electronic information technology industry, PCB requires the substrate to meet the performance of low dielectric constant, low media loss factor, high-temp...
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How to figure out a good PCB board?
The rapid development of the mobile phone, electronics, and communication industries promoted the continuous growth and rapid growth of the PCB circuit board industry. People have more requirements for the number of layers, weight, precision, materials, colors, and reliability of components. However, due to fierce market price competition, the cost of PCB board materials is also on a rising t...
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Black PCBs are Better than Green?
First of all, as a printed circuit board, PCB mainly provides interconnection between electronic components. There is no direct relationship between color and performance, and the difference in pigments does not affect the electrical properties. The performance of the PCB board is determined by factors such as the material used (high Q value), wiring design, and several layers of t...
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High-precision circuit board technology
High precision circuit board refers to the use of fine line width/spacing, tiny holes, narrow ring width (or no ring width), and buried and blind holes to achieve high density. And high precision means that the result of "thin, small, narrow, thin" will inevitably bring high precision requirements, take the line width as an example: O. 20mm line width, according to the regulations to produce O. 16...
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