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The density of PCB printed circuit boards is getting higher and higher, and the quality of PCB design has a great influence on the anti-interference ability, so the layout of PCB is in a very important position in the design. Layout requirements for special components: 1. The shorter the connection between the high-frequency components, the …
FPC patch processing process and precautionsFPC chip processing needs to provide information1. Complete FPC board making documents (Gerber files, layout diagrams, steel mesh files) and board making requirements;2. Complete BOM (including model, brand, package, description, etc.);3. PCBA assembly drawing.PS: To report the PCBA functional test fee, you need to provide the PCBA functional test method.FPC …
Commonly used fasteners for PCB are screws, nuts, washers, pressure plates and wire clips1. ScrewsMost of the currently used screw structures are slotted and cross-recessed. Because the cross recess has the advantages of good neutrality and the screwdriver is not easy to slip out, it is currently widely used. Type of screwAccording to the structure …
To put it bluntly, the PCB puzzle is to combine several small PCB units with various connection methods. The more common jigsaw puzzles include AA sequential jigsaw, AB front and back jigsaw, AA rotation jigsaw, AB Yin Yang jigsaw, ABC mixed jigsaw and so on. PCB design engineers usually take into account the functional aspects …
The impact of PCB panel design on SMT production efficiency Read More »
What is a part package and how is it different from a part ? (1) Part packaging refers to the appearance and solder joint position indicated when the actual part is soldered to the circuit board.(2) The part package is only the appearance of the part and the location of the solder joints. The pure …
Rule analysis of some high-speed PCB designs1. When designing the PCB layout, fully abide by the design principle of laying along the signal flow in a straight line, and try to avoid going back and forth.Cause analysis: Avoid direct signal coupling, which will affect the signal quality.2. If the PCB clock frequency exceeds 5MHZ or …
Printed board manufacturers have many surface treatments when producing PCB circuit boards. 1. When printed board manufacturers produce PCB circuit boards, the crystal structure formed by immersion gold and gold plating is different. The thickness of gold plating is much thicker than that of immersion gold. satisfy.2. Immersion gold on PCB circuit boards produced by …
The difference between immersion gold and gold plating for printed board manufacturers Read More »
Basic Procedures for Failure Analysis In order to obtain the exact cause or mechanism of PCB failure or failure, the basic principles and analysis process must be followed, otherwise, valuable failure information may be missed, resulting in the failure of the analysis or possible wrong conclusions. The general basic process is that first, based on the …
The milling technology of the circuit board CNC milling machine includes the selection of the direction of the cutting tool, the compensation method, the positioning method, the structure of the frame, and the cutting point, all of which are important aspects to ensure the precision of the milling process. The following is the precision control …
Precision control skills and methods for PCB board milling Read More »
We need a BOM listing the required circuit board and all component parts in a Microsoft Excel format
In high-speed PCB design, multi-layer PCBs are often required, and vias are an important factor in multi-layer PCB design. The via hole in the PCB is mainly composed of three parts: the hole, the pad area around the hole, and the POWER layer isolation area. Impact of vias in high-speed PCBs In a high-speed PCB …
Since Paul Eisner officially invented PCB manufacturing technology in 1936, more than 80 years have passed, PCB has developed rapidly and has become an indispensable foundation for the electronics industry. Although the PCB generally only accounts for 5-10% of the cost of the finished circuit board, the reliability of the PCB is far more important …
Immersion copper / black hole/black shadow process, which one should I choose for PCB? Read More »
