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A, FR-4 sheet of continuous innovation In short, the circuit board substrate including copper foil, resin and reinforcing material such as the three major raw materials. However, if further in-depth study of the existing substrate and look at the changes over the years, it will find the complexity of the content of the substrate is indeed difficult to imagine. Due to the increasingly stringent requirements of the circuit board manufacturers for the lead-free era of substrate quality, resulting in the performance and specifications of the resin and the substrate, will undoubtedly become more complex. The challenges encountered by the substrate supplier, is to find the best balance between the various needs of customers, in order to obtain the most economic production efficiency, and its product data provided to the overall supply chain as a reference. Two, leading the industry trend of substrate specifications A number of industry trends in the process, which will lead to the re for...

First, performance: Outstanding representative of silicone type of circuit board conformal coating, Weitai conformal coating (VT-380) with waterproof, moisture-proof, dust-proof, anti corrosion, anti - aging etc. characteristic of the excellent and widely used in circuit boards, electronic components of the insulation. Easy to operate, brush, dip coating. Two, product application Circuit board conformal coating is a special formulation of coating, used for protection of circuit board and related equipment from the erosion of the bad environment, so as to improve and extend their service life and ensure the safety and reliability of using. Three paint coated on the circuit board surface, forming a layer of both light and flexible 0.5-0.8 mm thick protective film. It can protect the circuit board from damage in the case of chemical substances such as fuel, coolant, vibration, humidity, salt spray, humidity and high temperature. In these conditions circuit board may be corrosion, mold...

Circuit board repair is a new repair industry. Industrial equipment automation degree is more and more high, so there are a growing number of various sectors of the IPC board, industrial control board is damaged, replacement circuit boards for the high cost (ranging from a few thousand dollars, as many as tens of thousands or hundreds of thousands of yuan) has become the enterprise is very headache thing. In fact, the vast majority of these damaged circuit boards in the country can be maintained, and the cost is only to buy a new board of 30% - 20%, the time is much shorter than the foreign fixed board. The basic knowledge of circuit board maintenance is described below. Almost all of the circuit board repair are not drawing materials, so a lot of people to the maintenance of the circuit board to skepticism, although various circuit boards vary, but constant is each kind of circuit board are all integrated block, composed of resistors, capacitors and other devices, so the damage of c...

According to the circuit board layer to the right is divided into single panel, double sided and multilayer circuit board, three classifications. The first is a single panel, in the most basic PCB, the parts are concentrated in one side, the wire is concentrated on the other side. Because the wire only appears on one side, the PCB is called a single sided circuit board. The single panel is usually simple and low cost, but the disadvantage is that it can not be applied to the product. The dual panel is an extension of the single panel, when the single layer wiring can not meet the needs of electronic products, it is necessary to use a double-sided board. Both sides are covered with copper wire, and can pass through the hole to guide the two layer between the lines, so that the formation of the required network connection. A multilayer board is a printed board with three layers of conductive pattern layer and insulating material which are laminated and formed with a layer of insulati...

First, the role of PCB In order to avoid the artificial connection error; realized automatically in installation, welding and testing; guarantee the quality and reliability of electronic equipment products, improve labor productivity, reduce production cost, convenient maintenance. So in the electronic equipment which uses the printed circuit board (PCB). There are three main functions as follows. 1, to provide parts of welding resistance welding pattern: PCB to provide resistance welding for components welding graphics, for parts maintenance, to provide identification of character check, insert; 2, the role of wire link parts: PCB to achieve a variety of parts between the electrical connection or electrical insulation, to provide the required electrical characteristics, such as high frequency microwave signal transmission, characteristic impedance; 3, supporting the role of parts: to provide a variety of parts (such as resistance, integrated circuits, capacitors, etc.) assembly, ...

First, the foreword Compared with the traditional vertical plating and cathode plating material take step is its biggest characteristic, this mode can effectively improve the electroplating quality, also covers an area reduced greatly and has its own advantage in mass production, so lately by electroplating industry of the pro Lai. The traditional vertical plating line, cathode relative to the fixed position, the anode titanium basket arrangement, plywood and splints spacing pieces on the board in the horizontal direction uniform has a significant effect, panel splints spacing, end plate position will affect the power line distribution, thus affecting the uniformity of copper plating. And to our a VCP line as an example, unilateral about 300 titanium anode baskets, the titanium basket of copper thick together plays role of an average, so single titanium basket deviation or lack of copper plating uniformity influence almost negligible. At the same time, VCP with a single hanger clip ...

In order to cope with the increasingly stringent requirements of high-frequency circuit design on the board, ROGERS launched a new generation of high-frequency laminate RT/duroid® 5880, which is made of PTFE glass fiber reinforced materials, and the microfibers inside the board are randomly distributed in the material Inside, it can greatly guarantee the strength of the board in the circuit application process and production process. Compared with similar materials on the market, RT/duroid® 5880 has the lowest dielectric constant, measured at 10GHz IPC-TM 2.5.5.5 standard, and its dielectric constant is 2.20±0.02. At the same time, the dielectric loss of the plate is measured under the same standard, only 0.0009. The extremely low dielectric loss makes it very suitable for high-frequency and wide-band applications that require minimum dispersion and loss. Its highest support frequency can reach Ku band or even Higher frequency. In addition, RT/duroid® 5880 has an extremely low moistur...

Rogers RT6002 high frequency board material parameters Download specification RT6002 microwave material is a low dielectric constant laminate, which can meet the strict requirements of mechanical reliability and electrical stability in the design of complex microwave structures. The test results of the rate of change of dielectric constant with temperature from -55 degrees Celsius to +150 degrees Celsius show that the material's dielectric constant has excellent resistance to temperature changes and can meet the requirements of filter, oscillator and delay line designers. The need to stabilize electrical performance. The low thermal expansion coefficient of RT6002 material in the Z direction ensures the stability of the plated through holes. No failure of the through holes was found in 5000 cycles of temperature cycles (-55 to +150 degrees Celsius). By matching the thermal expansion coefficients in the X and Y directions, it is close to The thermal expansion coefficient of coppe...

The RT/duroid® 6006/6010 microwave laminate is a ceramic-filled PTFE material designed specifically for circuits or microwave applications that require high dielectric constants. The dielectric constant of RT/duroid® 6006 is 6.15 and the dielectric constant of RT/duroid® 6010LM is 10.2. RT/duroid 6006/6010 microwave laminates have the characteristics of easy processing and stable use. They have tightly controlled dielectric constant tolerance and thickness, low moisture absorption and excellent thermomechanical stability. RT/duroid 6006/6010 sheets are available with double-sided copper clad thickness from ¼ oz. to 2 oz./ft2 (8.5 to 70 μm), electrolytic copper or rolled copper are available, and thick aluminum base, brass or Red copper base metal plates are available for customization. main advantage High dielectric constant can reduce circuit size Low loss, ideal for X-band applications Strictly controlled thickness and dielectric constant tolerances are suitable for circuit...

On the computer's memory bar and graphics card, we can see a row of golden conductive contacts, which are called "gold fingers". The Gold Finger (or Edge Connector) in the PCB design and production industry uses the connector connector as an outlet for the board to connect to the external network. Next, let's understand the processing method of the gold finger in the PCB and some details. Gold finger PCB surface treatment 1. Nickel electroplating: thickness up to 3-50u", because of its superior conductivity, oxidation resistance and wear resistance, it is widely used in gold finger PCBs that require frequent insertion or removal or PCBs that require frequent mechanical friction Above, but because the cost of gold plating is extremely high, it is only used for local gold plating such as gold fingers. 2. Immersion gold: conventional thickness 1u", up to 3u" due to its superior conductivity, flatness and solderability, it is widely used in high-preci...

Suntak Technology Co., Ltd. (Suntak Technology) was established in Shenzhen in 1995. It is a high-tech company specializing in the manufacture of circuit boards. Through more than two decades of efforts, Suntak Technology has developed into a strong listed company (Stock Code: 002815.SZ), with five modern plants in Shenzhen, Jiangmen and Dalian. Its sales revenue in 2019 was RMB 3.72 billion. And Suntak Technology started to build manufacturing plants in Zhuhai city and Nantong city. Suntak's products are widely used in communication equipment, industrial control, automotive, medical equipment, security electronics, consumer electronics, aerospace and other high-tech fields. Over 70% of its products are sold in more than 40 countries and regions, including the United States, Europe and Asia (excluding China), and it has won the recognition of some of the top 500 companies in the world who are its customers, such as BOSCH, EMERSON, SCHNEIDER and Google. Adhering to the mission ...

Located in China, PCBCart is a professional PCB production service provider with more than 10 years of experience in the electronics manufacturing industry. We've manufactured printed circuit boards for more than 10,000 companies and over 80 countries around the world — some have been with us since our establishment in 2005. Our customer satisfaction rate is around 99%, and we take pride in providing the best service around. We specialize in providing companies of all sizes with full-range and high-quality PCB fabrication, PCB assembly and components sourcing services. We can cover from quickturn PCB prototyping to full production, part kitting to full turn-key assembly and PCB design instructions to PCB material suggestions. And We ship internationally, so regardless of where your company is located, explore our wide range of PCB services today. Our one-stop PCB production solutions shorten your products' time to market, dramatically improving return on investment (ROI)...

Printed circuit board is the most important part of electronics. Alternately, the acronym has also accounted for printed wiring boards and printed wiring cards, which are essentially the same thing. Due to the crucial role of these boards in everything from computers to calculators, PC board material selection should be undertaken with care and knowledge for electrical necessities of a given piece of equipment. Before the development of the PCB, circuit board materials were mostly covered by nests of entangled, overlapping wires that could easily fail at certain junctures. They could also short circuit once age took hold and certain wires started to crack. As could be expected, the manual process that went into the wiring of these early boards was confusing and painstaking. As an increasing variety of everyday electronic components began to rely on circuit boards, the race was on to develop simpler, more compact alternatives, and this led to the development of the material, PCB. W...

The base material or substrate is usually glass fiber. Historically, the most common symbol for this glass fiber is "FR4". Fiberglass is stacked on top of each other and fixed with resin, and made into a unit strong enough to hold the board. There are also flexible PCBs built on flexible high-temperature plastics. Cheaper PCBs should be made with other materials. Epoxy resins or phenolic resins lack the durability of FR4, but are much cheaper. These types of substrates can also be found in low-end consumer electronics products. The PCB can be single-sided (one copper layer), double-sided (one substrate layer with two copper layers on both sides), or multiple layers (outer and inner copper layers, alternating with substrate layers). The next layer is thin copper foil. It is laminated to the circuit board by heating and adhesive. Generally, on a double-sided PCB, copper is applied to both sides of the substrate. In cheaper electronic devices, the PCB may have copper on o...

We typically learn about, analyze, and design electrical or electronic circuits using a diagram, called a schematic, that consists of component symbols connected by lines. The symbols represent everything from basic passive components such as resistors or capacitors to sophisticated integrated circuits such as microcontrollers, and the lines represent conductive pathways that allow electrical current to flow freely from one portion of the circuit to another. One thing that all schematics have in common is the utter inability to drive a motor, or blink an LED, or filter out noise, or do any of the other useful and interesting things that we expect electrical systems to do. A schematic is, after all, just a drawing. To actually accomplish something with a circuit, we need to translate its schematic into physical components and physical interconnections. Simple schematics can often be realized on a breadboard, but the vast majority of circuit designs enter the physical realm in the fo...

PCBSKY is a Printed Circuit Boards (PCB) manufacturer in China that specializes in PCB prototype creation and low volume circuit boards production. We care about the quality of the PCB prototypes that we manufacture. Our use of stable and high quality products is what makes our products right for you and your business. We have a strict quality monitoring system and state-of-the-art testing equipment Our PCB fabrication process is UL approved and IS0 9001compliant. We are a company trying to make circuit boards cheaper for everyone to enjoy professional quality PCBs. Get back to home page PCB fabrication. If you have PCB to produce, please send Gerber to  sales@pcbsky.com.cn  .Thank you.

1、CUT Cutting is the process of cutting the original copper clad laminate into boards that can be made on the production line. 2、INNER DRY FILM The inner dry film is the process of transferring the inner circuit pattern to PCB. 3. Browning Objective: to form a micro rough and organic metal layer on the inner copper surface to enhance the adhesion between layers. 4. Lamination Lamination is a process of bonding each layer of circuit into a whole with the help of the adhesion of PP sheet. This kind of bonding is realized by the diffusion and penetration of macromolecules on the interface, and then interweaving each other. The discrete multilayer board and PP sheet are pressed together to form the multilayer plate with the required number of layers and thickness. During the actual operation, copper foil, bonding sheet (semi cured sheet), inner layer plate, stainless steel, isolation plate, kraft paper, outer steel plate and other materials are laminated according to the process...

Fr-4 epoxy glass fiber cloth substrate is a kind of substrate with epoxy resin as adhesive and electronic glass fiber cloth as reinforcing the material. Its bonding sheet and inner core thin copper clad plate are important substrates for making multilayer printed circuit boards. General Properties Flammability: UL94 V-0 Thermal stress: ≥10 Sec Flexural Strength: ≥415 N/mm2 Dielectric Breakdown: ≥40 kV Dielectric Strength: ≥30 kV/mm Dielectric Constant: Etched/@1 MHZ ≤5.4 Loss Tangent: Etched/@1 MHZ ≤0.035 Moisture Absorption: ≤0.5 % PCB Materials Supplier The following are our main suppliers. If you need relevant information, you can download it from their website ☆ Taiwan Union Technology Corporation (TUC). The website is http://www.tuc.com.tw ☆ ITEQ Corporation(IT),The website is http://www.iteq.com.tw ☆ Isola Group (isola),The website is https://www.isola-group.com ☆ Ventec International Group (VIG),The website is http://www.ventec-group.com ☆ Rogers Corp. (Rogers...

RF is the abbreviation of Radio frequency, which indicates the electromagnetic frequency that can be radiated into space. The frequency range from 300khz to 300GHz. Radio frequency is radio frequency current, referred to as RF, it?s short for a high frequency alternating electromagnetic wave. An alternating current that changes less than 1,000 times per second is called a low-frequency current, and more than 10,000 times is called a high-frequency current, and radio frequency is such a high-frequency current. Radio frequency (300k-300G) is a higher frequency band of high frequency (greater than 10K), and microwave frequency band (300M-300G) is also a higher frequency band of radio frequency. In the theory of electronics, current flows through a conductor, and a magnetic field is formed around the conductor; An alternating current passes through a conductor, and an alternating electromagnetic field is formed around the conductor, called an electromagnetic wave. When the electromagne...

1. High Frequency PCB Electronic gadgets with high frequency are the limelight these days, particularly in the remote systems. Satellite correspondence developing quickly, data items move towards fast and high frequency. In this way growing new items consistently need to utilize high frequency substrate, satellite network, cell phone getting base station, etc, these correspondence items must utilize high frequency PCB. High frequency printed circuit boards are utilized to transmit electromagnetic waves in the frequency of GHz with negligible loses. Subsequently, printed circuit board with some particular attributes are utilized to transmit these electromagnetic waves. A few parameters are thought about while planning a PCB for high frequency applications. The expanding multifaceted nature of electronic segments and switches ceaselessly requires quicker signal stream rates, and hence higher transmission frequencies. On account of short pulse rise times in electronic parts, it has...

PCBs, or Printed Circuit Boards have become an integral part o the modern world. Used in just about every major piece of technology in the world from the simple to the complex, it?s something of a commonplace today. Ever since the PCBs first emerged, a couple of decades ago, they have been adopted and developed into several different variants. Each suited to its own interesting and specialized purpose, one can today find a host of different PCB varieties, and each suited for something unique and special. Of the many PCB varieties that exist, one of the more interesting and often ignored variants, is that of the LED PCB. LED PCB is an abbreviation for Light Emitting Diode PCB. It is an interesting technological development, used in a wide range of applications, and might just be in your own home as well, albeit gone unnoticed. There is much that can be said about LED PCBs, with regard to their nature, characteristics and other aspects. Given in the points below, are some of t...

PCBs are a fairly common aspect of the modern world, found in just about every last piece of tech one comes across. With the technology being used in just about every single part of the world of technology, they are a mainstay of the modern world. This widespread nature of PCBs, in all its shapes, sizes and variants, can make one overlook the work that goes into their assembly. But the truth is that there is quite a story behind the humble PCB, which is as interesting, as it is astounding. There is much that goes into the assembly of PCBs, from the beginning until the end. Explained in the points below, are some of the key details about the process. 1.) Requirement and Need Assessment The first step in the PCB design, has nothing to do with the actual manufacturing process, and everything to do with a basic assessment.  It is the step where the needs of the application or gadget, as well as anything else that goes with it, are taken into consideration, to decide the n...