PCB Blogger-China PCB Factory,HOYOGO

       The circuit board is made of copper clad laminate with a layer of copper foil on both sides of the copper clad laminate. When the thickness of the copper foil is greater than or equal to 2OZ, it is defined as a   thick copper board , so why do we make such thick copper, and what are the characteristics of the thick copper board?       1.  C arry  H igh  C urrent In the case of a certain line width, increasing the copper thickness is equivalent to increasing the cross-sectional area of the circuit, so the thickening of the copper foil can make the circuit board carry a larger current.     2.  R educe  T hermal  S train The conductivity of copper foil is small   (conductivity is resistivity; metal conductors are divided into: silver  →  copper  →  gold  →  aluminum  →  tungsten  →  nickel  →  iron.).  In the case of passing a large cu...

       According to JPCA-ES-01-2003 standard: Copper clad laminates with chlorine (C1) and bromine (Br) contents less than 0.09% Wt (weight ratio) respectively (at the same time, the total amount of CI+Br  ≤  0.15% [1500PPM]) are defined as halogen-free copper clad laminates.  So what are the characteristics of halogen-free PCB?   1.   Environmental  P rotection Halogen-free PCB  board realizes environmental protection and non-toxicity of PCB by replacing or replacing harmful elements.     2.  F lame  R etardant Most of the halogen-free materials are mainly phosphorus -based   and phosphorus - nitrogen -based .   The polymer resin containing phosphorus and nitrogen compounds will form a carbonized film when it is burned, which can isolate the burning surface of the resin from contact with the air, so that the fire can be extinguished and the flame retardant effect can be achieved.     3. ...

In the PCB production process, the purpose of surface treatment is to ensure good solderability or electrical properties, so it is one of the important steps.  At present, the common surface treatment methods on the market include spray tin, immersion tin, immersion gold, etc. It is relatively rare to use ENEPIG for surface treatment. What is the PCB ENEPIG  technology ?   ENEPIG is a chemical palladium slot between chemical nickel and chemical gold.  Compared with other surface treatment methods,  ENEPIG   has the advantages of stable durability, excellent solder resistance, good compatibility, high plating flatness, and suitable for high-density pads, so it can be used in more precise PCB.   The welding performance is also better.     At present, the most widely used immersion gold  technology   is to wrap a layer of nickel-gold alloy on the copper surface to protect the PCB for a long time.   Compared with immersion gold, EN...

       BGA packaging is  now  he mainstream packaging method. It has many advantages. Do you know what they are?       1 . Small size The BGA package only has chips, interconnect lines, thin substrate s   and plastic cover s ,  with   few exposed components and no large pins. The height of the entire chip on the PCB can be 1.2 mm.     2.  Large  S torage  S pace Compared with other types of packaging technologies, memory products and operating products using BGA packages will increase by more than 2.1 times in terms of memory capacity and operating speed.     3.  High  S tability Since the pins of the BGA package are directly extended from the center of the chip to the surrounding s , the transmission path of various signals is effectively shortened, the attenuation of the signal is reduced, the response speed and anti-interference ability are improved, and  the stability of the...

       SMT is a mounting technology that does not require drilling insertion holes on the PCBA board, but directly attaches or solders surface mount components to the component positions specified on the surface of the PCBA board. So what are the advantages of SMT processing?       1.  M iniaturization SMT processing has the characteristics of high assembly density, small size and light weight. The volume and weight of SM T   components are only about 1/10 of those of traditional plug-in components.  Generally, electronic products  are   reduced by 40%~60%   in volume   and 60%~80%   in weight after using SMT .   The distance between the adjacent electrodes of the SMT component s  is much smaller than the lead spacing of the traditional DIP integrated circuit, and the current pin spacing has reached 0.3mm.     2. Electrical  P roperties Surface mount components reduce parasitic lead ...

      Farewelled to 2021 and welcomed 2022, HoYoGo welcomed its employees ’ s November-December birthday party! At the beginning of the birthday party, the birthday stars  employees  received the birthday cake prepared by the company. Along with the birthday song, the birthday stars blew out the birthday candles with the blessing of the HoYoGo people, cut the birthday cake together, and shared the joy of birthday!       Then, Yumi spoke: At work, we showed our trust and our value in our position. If a job is worth doing, it is worth doing well. She also said that our turnover  in 2021  was better than  in 2020 , and we doubled our performance in many months  in 2021 . This is because we value "reply in time" as our work criterion, because when  time  is passed, the opportunit ies   are  missed, and the  timing  and the good opportunit ies  coexist, so it is very important to reply in time...

  In the PCB industry, manufacturers have many methods for PCB inspection. For example: signal injection method, substitution method, offline Inspection, online inspection, parameter test method, waveform observation method, visual inspection method, signal tracking method, AC short circuit method, separation test method, etc. The intelligent detection method of the circuit board needs to select the online test method according to the specific characteristics of the PCB board, in order to combine one or more processes, complement each other, and make comprehensive utilization. First, use the idea of virtual instruments on the PCB to establish related application software, that is, implement various functions of traditional instruments through software, including oscilloscopes, signal generators, and various mathematical processes on the collected data. During the test, the digital signal is given by the test software. Then, the PCB test system will have new design id...