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China Wholesale Smt Boards Quotes - 8 Layer FPC+FR4 Rigid Flex PCB 4 – Huihe
The Rigid Flex PCB plays a key role in the automotive market The Rigid Flex PCB is becoming more and more important in automotive electronics, which is beyond PCB operators’ original imagination. The reason is that we did not think that the technology used in mobile phone lens module would have the opportunity to extend to the ADAS lens module for car, and further attract the auto component industry to introduce the Rigid Flex PCB into the module products such as photar, and become the entry ... -
China Wholesale Round Pcb Board Manufacturers - 6 layer ENIG Impedance Control Heavy Copper PCB 15881 – Huihe
Functions of heavy copper PCB Heavy copper PCB has the best extension functions, is not limited by the processing temperature, high melting point can be used oxygen blowing, low temperature at the same brittle and other hot melt welding, but also fire prevention, belongs to the non-combustible material. Even in highly corrosive atmospheric conditions, copper sheets form a strong, non-toxic passivation protective layer. Difficulty in machining control of heavy copper PCB Thickness of copper PC... -
China Wholesale High Current Pcb Manufacturers - 8 Layer FPC+FR4 Rigid-Flex PCB 8 – Huihe
Rigid-Flex PCB in consumer electronic products The first use of Rigid-Flex PCB in the field of battery modules, now look at all mobile phone brands around the world, the use of Rigid-Flex PCB battery has been a consensus, and may become a long-term trend. At the same time, in order to accommodate more lenses in smaller and smaller space, mobile phone lens module also began to use the Rigid-Flex PCB, in addition to gradually expanded to display and other mobile phone modules. As for the l... -
China Wholesale Transparent Circuit Board Quotes - 6 Layer FR4+Rogers PCB 28727 – Huihe
Features of high frequency PCB 1. High frequency PCB with small dielectric constant, loss will be very small, and advanced induction heating technology can achieve the needs of the target heating, very high efficiency. Of course, while paying attention to efficiency, it also has the characteristics of environmental protection, which is very suitable for the development direction of today’s society. 2. The transmission speed is inversely proportional to the square root of the dielec... -
China Wholesale Pcb Service Factories - 8 Layer ENIG via-in-pad PCB – Huihe
The most difficult thing to control the plug hole in the via-in-pad is the solder ball or pad on the ink in the hole. Due to the necessity of using high density BGA (ball grid array) and the miniaturization of SMD chip, the application of in tray hole technology is more and more. Through the reliable through hole filling process, the in plate hole technology can be applied to the design and manufacture of high-density multilayer board, and avoid abnormal welding. Huihe Circuits has been using... -
China Wholesale Small Pcb Board Factories - 6 Layer ENIG Blind Vias PCB 27809 – Huihe
Features of the Blind Via Blind Vias are located on the top and bottom surfaces of the circuit board and have a certain depth for the connection between the surface circuit and the inner circuit below. The depth of the hole usually does not exceed a certain ratio (aperture). This way of production will need to pay special attention to the depth of the hole (the Z axis) to the right, do not pay attention to words will cause difficult hole plating so almost no factory used, can also be connecte... -
China Wholesale Emc Pcb Pricelist - 6 Layer ENIG Impedance Control PCB 10222 – Huihe
Factors determining controlled impedance The characteristic impedance of a PCB is usually determined by its inductance and capacitance, resistance and conductance. These factors are functions of the physical size of the circuit, the dielectric constant and dielectric thickness of the PCB substrate material. In general, the line impedance of a PCB ranges from 25 to 125Ω. The PCB structure that determines the impedance value consists of the following factors: Width and thickness of top and... -
China Wholesale Embedded Pcb Pricelist - 4 Layer ENIG Impedance Control PCB 9115 – Huihe
About the impedance control In the case of transmission of high frequency signals, the controlled impedance helps to ensure that the signal does not decay significantly during transmission. In essence, controlled impedance refers to the matching of the material properties of the substrate to the characteristics of the line/dielectric layer to ensure that the impedance value of the line signal is within the tolerance of the reference value. Controlled impedance PCBs provide reliable and c... -
China Wholesale Electronic Circuit Board Assembly Manufacturers - 6 Layer ENIG Impedance Control PCB 7736 – Huihe
Why PCB to do impedance? PCB impedance refers to the resistance and the parameters of the reactance, which acts as a barrier to the alternating current. Impedance processing is essential in PCB. Here’s why: 1, PCB to consider the plug installation of electronic components, SMT patch plug also needs to consider the conductivity and signal transmission performance, so it will require the lower the impedance, the better. 2, PCB in the production process through copper deposition, electroplating ... -
China Wholesale Prototype Pcb Assembly Suppliers - 2 layer High TG ENIG PCB 11590 – Huihe
About High Tg material Tg is the mechanical property that specifies the glass transition temperature, the maximum temperature at which the glass remains rigid.Normal PCB FR4-TG is 130-140 degrees, medium TG is greater than 150-160 degrees, high TG is greater than 170 degrees. Compared with standard FR4, high FR4-TG has better mechanical and chemical heat resistance and moisture resistance.The higher the Tg value, the better the heat resistance of the material, so, especially in the lead-... -
China Wholesale Populated Printed Circuit Boards Manufacturers - 4 Layer ENIG half hole PCB – Huihe
Difficulties in machining metallized half-hole PCB Metalized half-hole PCB after forming the hole wall copper black , burr residuadeviation has been a difficult problem in the molding process of PCB factoEspecially the whole row of half holes similar to stamp holes , the aperture isabout 0.6 mm , the hole wall spacing is 0 . 45 mm , the outer figure spacing is 2mm , because the spacing is very small , it is easy to cause short circuitbecause of copper skin. The general metallized half-ho... -
China Wholesale Double Sided Pcb Board Prototype Factories - 10 Layer Medium TG Gold Finger PCB – Huihe
The advantages of high Tg materials The main advantage of high Tg materials is higher operating temperature( MOT ) , which can carry more current . According to experience , TG minusabout 20 C can be used as mot . At this temperature , the PCB can runnormally for a long time without damage. The heat resistance temperature of the common solder mask is usually lowerthan the Tg of the substrate . The conventional maximum operatingtemperature of solder mask is about 150 C . For high Tg appli...
