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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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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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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 | 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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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 | Introduction of Silkscreen
What Is Silkscreen On a PCB? When you design or order your printed circuit boards, do you need to pay extra for silkscreen? There are some questions you need to know what’s silkscreen? And how important silkscreen is in your PCB Board fabrication or Printed Circuit Board Assembly? Now ABIS will explain for you. What is silkscreen? Silkscreen is a layer of ink traces used to identify components, te...
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HDI board-high density interconnect
HDI board, high density interconnect printed circuit board HDI boards are one of the fastest growing technologies in PCBs and now available in ABIS Circuits Ltd. HDI boards contain blind and/or buried vias, and usually contain microvias of 0.006 or smaller diameter. They have a higher circuit density than traditional circuit boards. There are 6 different types of HDI PCB boards, from surface to su...
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How to prevent PCB board warping during the manufacturing process
SMT(Printed Circuit Board Assembly, PCBA) is also called surface mount technology. During the manufacturing process, the solder paste is heated and melted in a heating environment, so that the PCB pads are reliably combined with surface mount components through the solder paste alloy. We call this process reflow soldering. Most of the circuit boards are prone to board bending and warping when unde...
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How to make a pcb in panel?
1. The outer frame (clamping side) of the Printed Circuit Board panel should adopt a closed-loop design to ensure that the PCB jigsaw will not be deformed after being fixed on the fixture; 2. PCB panel width ≤260mm (SIEMENS line) or ≤300mm (FUJI line); if automatic dispensing is required, PCB panel width×length ≤125 mm×180 mm; 3. The shape of the PCB jigsaw should be as close to the square as poss...
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Ceramic PCB Board
Ceramic circuit boards are actually made of electronic ceramic materials and can be made into various shapes. Among them, the ceramic circuit board has the most outstanding characteristics of high temperature resistance and high electrical insulation. It has the advantages of low dielectric constant, low dielectric loss, high thermal conductivity, good chemical stability, and similar thermal expan...
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