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06-072020Introduction about the technology of BGA assemblyBGA IC is a type of large-scale integrated circuit, mainly developed for small electronic products. Because its pins are located at the bottom of the IC, although it can save most of the space, it is very easy because its pins are very dense Causes virtual welding. Desoldering. The failure rate is fairly high. Now some maintenance personnel, especially those who are new to this industry, have a headache for it. Below I will introduce the BGA welding method in detail.
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06-072020The advantages of Aluminium PCBAluminum PCB substrate is a new type of heat sink metal plate, which is different from the traditional heat dissipation metal plate. The inherent characteristics of the aluminum substrate can minimize the thermal conductivity, so that more heat can be discharged to the maximum extent Cooling effect. The aluminum substrate is mainly composed of three parts, namely a circuit layer, an insulating layer and a metal layer, and a double panel is used in some high-end aluminum substrate designs.
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06-062020The difference in manufacturing FR4 PCB and Aluminum PCBWhen drilling aluminum PCB substrates, you can choose two drilling methods. One is to drill with a CNC drilling machine, but it is particularly easy to burn the spindle. The advantage of drilling with the drilling machine is that the hole wall drilled is particularly smooth, without burrs, and the accuracy is high. The second type can be drilled with a gong machine, but it is easy to have burrs, and the precision is not so high, it is easy to drill, so the cost of the aluminum substrate is higher than that of the FR4 PCB.
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06-062020Introduction about holes in PCB fabricationThe printed circuit board is formed by stacking layers of copper foil circuits, and the connection between different circuit layers is through vias. This is because the current manufacturing of circuit board proofing uses drill holes to communicate with different In the circuit layer, the purpose of the connection is to conduct electricity, so it is called a via.
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06-052020What's flex PCB stiffenerThe stiffener on the FPC is generally equipped with a layer of thermosetting glue. The thermosetting adhesive is solid at normal temperature and has no viscosity, but when the temperature rises to a certain level, it will change to a semi-cured state with strong viscosity.
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06-052020Introduction about LED PCB assemblyLED PCB assembly Refers to the assembly of LED chips on the PCB board, and because its shape resembles a strap, it is called an LED hard light bar.
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06-042020What is HDI PCBHDI PCB is a type of printed circuit board, which is called high Density Interconnection PCB. High-density interconnection board At present, high-end electronic products are generally HDI products.
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06-042020How to select PCB laminateThere are several types of PCB laminates in PCB industry, the materials for printed circuit board are generally FR-4, high frequency material (CCL), Rogers, High TG FR4, Middle TG FR4, Normal TG FR4, Halogen Free and other laminates.
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06-032020The types of fiducial mark in PCB designArticle is about the classification of fiducial Mark points in PCB design, and PCB design instructions and size requirements, you'll find useful information in this article for PCB design.
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06-032020What's impedance control in PCB manufacturingIn circuits with resistance, inductance, and capacitance, the impediment to alternating current is called. Impedance is usually expressed by Z, which is a complex number. The real part is called resistance, and the imaginary part is called reactance. Among them, the obstruction effect of capacitors in the circuit on alternating current is called capacitive reactance, and the obstruction effect of inductances in the circuit on alternating current is called. For the inductive reactance, the blocking effect of the capacitor and the inductance on the alternating current in the circuit is collectively called reactance. The unit of impedance is ohm.
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06-022020PCB size in PCB designThe design of PCB prototype processing size is mainly considered from the perspective of the device. There are two main situations: one is that there is no limitation of the chassis, and the design is stopped according to the given size; the other is to design on the basis of the selected chassis The size of the circuit board. The first of these two situations is easier to complete, and the second requires designers of PCB proofing to stop comprehensive thinking and accurate measurement of the case size.
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06-022020High frequency & RF PCB manufacturerA-TECH CIRCUITS is a professional PCB manufacturer with High frequency microwave radio frequency PCB board, microstrip circuit board, antenna circuit board, ARLON high frequency PCB, TACOINC high frequency PCB, Rogers high frequency PCB. F4BM high frequency PCB, radio frequency circuit board, power splitter, coupler circuit board.
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06-012020Plug vias in PCB manufacturingWhen solder mask opening in PCB manufacturing, it is generally stipulated that solder mask ink cannot enter through holes. But plug hole requires solder mask ink to enter the hole. Have questions about this?
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06-012020Introduction about PCB assembly machineIntroduction about PCB assembly machine, include: SMT solder paste printing machine, SMT placement machine, SMT reflow soldering machine, DIP wave soldering machine, PCBA testing equipment etc.
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05-312020What is PCB blind & Buried ViasBlind & buried via PCB, also known as HDI pcb boards, are often used in high-end products such as mobile phones, GPS navigation, etc. The structure of a conventional multi-layer circuit board is composed of inner and outer circuits, and then used for drilling , And the process of metallization in the hole, to achieve the connection function between the internal layers of the printed circuit boards.