• What is wave soldering?

    Wave soldering is to make the solder side of the PCB directly contact with high temperature liquid tin for welding purposes,its high temperature liquid tin maintains an inclined surface, and a special device makes liquid tin form a wavy phenomenon, so it is called “wave soldering”,its main material is soldering tin bar. Wave soldering is currently the most commonly used and effective method, wave soldering system has a large enough tin can handle the maximum circuit board width you expect.Wave soldering is suitable for medium batch or large quantity welding. Advantage:...

  • The advantage of robot in PCB industry

    The advantage of robot in PCB industry Like the automobile industry and other manufacturing industries, industrial robots have brought many advantages to enterprises in the PCB industry. 1.Reduce the use of work, speed up the pace of work, improve work efficiency. 2.Improve operation precision and product quality. 3.To avoid the potential threat to the health and safety of workers from the operating environment and save the investment in environmental safety. 4.Reduce the loss of efficiency, quality and accident rate caused by repeated and boring processes...

  • Why PCB Design Software is Proving So Vital to Modern Circuit Board Ingenuity

    Printed circuit board (PCB) design software is a remarkable tool when it comes to designing PCB for electronic devices. By using the PCB design software, an engineer not only addresses issues associated with power integrity and signal, but is also able to modify and improve the entire circuit structure. PCB design software can be easily integrated with other associated plugin PLM software that can assist engineers to better analyze layouts and designs of PCBs. In recent years, the demand for PCB design software from the electronics manufacturing industry has been robust. According to the latest data released by Future Market Insights (FMI), the global market for PCB design software is set to witness a CAGR of more than 12% between 2016 and 2026 to rake in $4,755.1 million in revenues by the end of the forecast period. Needless to say, PCB design software eliminates issues faster and significantly reduces circuit......

  • The veteran’s answer about Crystal Oscillator (Part one)

    Someone who has just started to join in Electronic Industry,they often faced the questions about Crystal Oscillator,even they have researched a lot of resources from refernce books or internet,but many of them are still in confusion. Today I share with you some typical questions and answers from the veteran electronic engineer. What’s the fonction of Crystal Oscillator? The main fonction is providing a clock signal for the whole system. For example,the run model of CPU is step by step,every step defined an instruction that base on Crystal Oscillator. What’s the relation between Crystal Oscillator and timing sequence? Timing sequence is counted on the clock’s order,and the clock is generated by a Crystal Oscillator. Why we often set some different Crystal Oscillator on the same PCB? Evey different CPU or Chip has different frequencies,they need matched Crystal Oscillator to run. For example,USB1.1 needs 48MHz clock to be divided, so 12MHz crystal......

  • The veteran’s answer about Crystal Oscillator (Part two)

    USB1.1 needs 48MHz clock to be divided, so 12MHz crystal oscillator is required, and the frequency is 4 times that of 48MHz. Why don’t choose 48MHz Crystal Oscillator directly? Because high frequency crystal oscillator is easy to be affected by peripheral circuits or affect peripheral circuits. Most of the time,we get high frequency by using low frequency crystal oscillator with second harmonic generation. But it’s not absolute,many circuits is often used a crystal oscillator of 50M or more. That’s a key point that we need a special attention when we do PCB layout.   Why we use 32.768KHz crystal oscillator when the RTC clock needs a more accurate 1S (1 second)? Because all digital circuits are expressed by binary system,32768 is 1000000000000000 in binary system. So as long as we detect the highest bit changes, we will know that 1 second, don’t need to check every bit, the circuit is......

RCY ELECTRONIC : Production process of halogen free PCB board

As we all know, PCB has halogen and halogen free two types, there are halogen PCB board production flow we introduced before. However, today let's talk about the halogen free PCB board and its manufacturing process flow 1. Lamination Lamination parameters may vary from company to plate. For example, the ShengYi raw material of  as the multi-layer board mentioned before In order to ensure the sufficient flow of the resin and good bonding force, we must require the lower heating rate of the sheet (1.0-1.5 ° C / min) and the multi-stage. In addition, It also require the Multi-stage Pressure matching and in the high temperature phase a longer time 180 ° C for more than 50 minutes during manufacturing of halogen free PCB board The pressed plate was used to detect the bonding force between the copper foil and the substrate being 1.ON/mm   2 Drilling processability Drilling conditions are an important parameter that directly affects the quality of the hole wall of the PCB during processing. What's more,  the halogen-free copper-clad laminate uses P, N series functional groups to...

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RCY ELECTRONIC : Technical requirements you must know for PCB base material

In recent years, the PCB market has shifted from computers to communications,including base stations, servers, and mobile terminals. In addition,mobile communication devices represented by smart phones have driven PCBs toward higher density, thinner, and higher multi-functions. And also, the manufacturing technology of printed circuit board is inseparable from substrate materials, which also involves the technical requirements of PCB base material   1 Requirements of high frequency and high speed Electronic communication technology ranges from wired to wireless, from low frequency, low speed to high frequency and high speed. Now the performance of mobile phones has entered 4G and will move towards 5G,which means faster transmission speed and larger transmission capacity. What's more,the arrival of the global cloud computing era has doubled the data traffic,and the requirements of high-speed and high-speed for communication equipment is an inevitable trend. In order to meet the PCB requirements for high frequency and high speed transmission needs In addition to reducing signal interference and loss in circuit design,maintaining signal integrity,and PCB manufacturing to meet design requirements it...

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RCY ELECTRONIC : What are the specific types of PCB Materials ?

printed circuit boards must be fire & flame resistant and can not burn at a certain temperature the temperature point at this time called the glass transition temperature (TG value) which is related to the dimensional stability of the PCB. So, what is a high Tg PCB board? And the advantages of using high Tg PCB ? Okay, let's talk about this today. High Tg printed circuit boards are PCB when the temperature rises to a certain area, the substrate will change from "glass state" to "rubber state" However,the temperature at this time is referred to as the glass transition temperature (Tg) of the plate That is, Tg is the highest temperature at which the substrate remains rigid. What specific types of PCB material  are there? According to the grade level and standards, we can divide PCB Materials as follows: 94HB - 94VO - 22F - CEM-1 - CEM-3 - FR-4 The details are as follows: 94HB: ordinary cardboard, not fireproof (the most cheap material,  die punching hole, can not be used as power board) 94V0: flame...

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RCY ELECTRONIC : How to judge the quality of PCB board?

1  Distinguish the quality from the pcb appearance Under normal circumstances,  we can analyze and judge the appearance of PCB circuit board through following three aspects. 1)     Standard rules for size and thickness. The thickness of the board to the standard board is different, and the customer can measure and check the thickness and specifications according to their own products. 2)  Light and color The external circuit board has ink coverage on the surface of pcb board, which can play the role of insulation for the circuit board However, if the pcb board has no bright color and the reflective light is poor, we can say that there is less ink on the pcb board. So, the board itself is not good 3)  The appearance of the welding Due to the large number of components and parts on the pcb board. But, if the welding is not good, which will cause components and parts easy to fall off. What's more, poor welding  seriously affects the  quality of the circuit board. It is very important to carefully identify the interface.   2 ...

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RCY ELECTRONIC : China has become the largest PCB industry base in the World

PCB has a wide range of applications and is currently welcoming the industry boom period. Globally,the supply side is strained due to various reasons, resulting in an imbalance between supply and demand.  Global PCB Output has Shifted   From 2009 to 2016, the growth rate of PCB output value in China is leading the world In the past eight years, the growth rate of output value in mainland China is basically higher than that in the world and other regions. Undoubtedly, mainland China has become the fastest growing region of PCB industry. In addition, the 5G construction demand will drive much room for growth in PCB According to industry insiders, with the advent of the 5G era, major changes will occur in the fields of communications consumer electronics and automotive electronics, which will drive the development of the corresponding PCB industry. Communication field: The 5G base station has features of high frequency and high speed What's more, it needs to adopt a millimeter wave band with higher frequency and wider bandwidth. According to...

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RCY ELECTRONIC : Substrate-based PCB technology

Substrate type PCB technology Under the general trend of thinner and lighter smartphones,the internal space of mobile phones is getting smaller and smaller. And also, the competition for internal space of various components inside mobile phones is becoming more and more fierce. Relatively speaking,it is more common to provide space for other mobile phone components by reducing the battery capacity. Therefore, the space reserved for the battery inside the mobile phone is also shrinking, but the subsequent battery life problem has become one of the  big troubles for mobile phone manufacturers. Under the premise that the battery technology has not achieved breakthrough progress it is the most simple and effective method to increase battery life in order to increase more power for mobile phones substrate-based PCB technology However, the traditional PCB technology is to design circuit connection wires and mounting holes on the printed board After the leads of the traditional components a r e pass e d through the holes on the circuit board, since the components have leads, when...

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High-frequency high-speed PCB –5G core benefit PCB

As we all know, PCBs has many types according to different categories. However ,among all the PCB categories and PCB types, there are two types of PCB boards, which will benefit greatly from 5G applications 1. High frequency PCB board The high frequency PCB i s mainly used in the antenna and RF front end. In addition, the CCL of the high frequency PCB uses high frequency materials (PTFE and hydrocarbon) and FR-4,because the high-frequency material is softer than the FR-4 material. the consistency of the mixing process is poor,the production difficulty is increased, and the price and profit margin are higher. However, many high-speed boards used for 5G are high multi-layer PCB boards, especially the backplane PCB of the core network is even higher than 20 layers ( general PCB is 4,6,8 layers ), which can make the data rate  increase and smaller size for the base station What's more, the line width and line spacing are further refined, and the technical difficulty is naturally higher   2. High speed PCB board In general, due to the high difficulty...

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The Factors That We should Consider About Power Processing In PCB

The processing of the power plane plays an important role in PCB design. In a complete PCB design project, usually the power supply process determines the success rate of 30%-50% of the project Today, let's talk about the basic elements that we should  consider in the power plane processing during the PCB design process. 1   When doing power processing, we should first consider its current carrying capacity,which includes two aspects: a) Whether the power line width or the width of the copper is sufficient to consider the power line width The first step is to understand the copper thickness of the layer on which the power signal is processed. However, under the conventional process, the outer thickness of the PCB (TOP/BOTTOM layer) is 1OZ (35μm), and the inner copper thickness is 1OZ or 0.5OZ according to the actual situation For 1OZ copper thickness, under normal conditions, 20mil can carry about 1A current. But,  for 0.5OZ copper thickness, under normal circumstances, 40mil can carry about 1A current   b) Whether the size and...

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Introduction of PCB Vias & PCB Holes

1   Via design in high speed PCB In high-speed PCB design, multi-layer PCBs a r e often required. H0wever, vias are an important factor in multilayer PCB design. The via holes in the PCB a r e mainly composed of a hole, a pad area around the hole, and a POWER layer isolation area. Today, let's talk about the vias of PCB  and design requirements for vias in high-speed PCBs. In high-speed PCB multi-layer boards,signals a r e transmitted from one layer of interconnect to another and via vias a r e required to connect. And also,when the frequency is lower than 1 GHz, the via can play a good connection, However, when the frequency is higher than 1 GHz, the influence of the parasitic effect of the via on the signal integrity can not be ignored. At this time, the via appears as a discontinuous breakpoint on the transmission path which will cause signal reflection, delay, and attenuation. Signal integrity problem   2  Type of vias Blind hole: refers to the...

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Development of Flex PCB (FPCs) and substrate-like pcb (SLPs) in PCBs

Nowadays, as we all know, the development of mobile phones is becoming more and more intelligent, thin and light which means that the internal components of mobile phones will be further reduced or integrated. Under this trend, flex pcb  (FPCs) and substrate-like pcb (SLPs) in PCBs have the opportunity to be further promoted and applied. At present, FPC has grown to RMB 31.6 billion in the Chinese market. It is estimated that by 2021, China's FPC market will have an opportunity to reach RMB 51.6 billion with a compound annual growth rate of 10%. And today's mainstream Chinese brands of mobile phones use FPCs in 10 to 15 pieces,while iPhone X uses up to 20 to 22 pieces. We can see that there is still much room for improvement in the use of FPCs in Chinese smartphones market. At the same time, the FPC single value has reached 10 US dollars, the amount is still rising. However, FPCs are used extensively in smartphones for connections between components and...

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Building 4, JinFeng Industry Zone, Heping Village, Fuyong Town, Bao’an District, Shenzhen, Guangdong Province, PRC.:
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