How to Choose Lead-free Surface Finish Techniques

Introduction of Application of Lead-free Surface Finish Techniques:Whether lead-free HASL can be popularized will depend on the results of the scientific study and its promotion and influence, but its smooth surface and high temperature process problems may be obstacles. OSP technology is widely used when a flatter surface is required, long shelf life is not required, and multiple heating applications are not required. OSP is likely to replace HASL technology in a large number of general applica...

Surface Finish

Applications of Rigid-Flex PCB in Electronic Products

Introduction:Rigid-flex PCB has a wide range of applications, such as it can be used in a variety of common electronic products in common life, but also can be installed in high-end aircraft armed systems. Military aviation and medical devices are the most important conventional applications of rigid-flex PCBs. Rigid-flex PCB can provide many advantages to meet the needs of military aviation design, because it can reduce the overall weight of electronic equipment, at the same time, but also redu...

rigid-flexible PCB

The Crucial Manufacturing Process of Rigid-Flex PCB

Introduction:The rigid-flex PCB technology almost immediately delivered on its promise of simplifying interconnection and assembly of complex interconnection structures. Because of the superiorly mechanical and electrical reliability, the rigid-flex PCBs have been used in the fields of military, aerospace, automotive, computer peripherals and portable electronics. Characteristics and Applications of Rigid- Flex PCB:There have always been 4 drivers that have created the need for rigid-flex:1) ...

Winners List of PCBWay Second PCB Design Contest

Dear All PCBWayers,After six months’ collection, we received more than 220 entries, which is almost 4 times the number of last year’s entries. Thank you very much for your participation and we are truly honored to have your awesome projects in the contest. The Best Designs1st Prize: Hedgehog Educational Robotics ControllerAward: $1000 in cash + $100 in coupons+ 10000 PCBWay Beans+ Certificate of Awards & HonorsJudge’s Comments: “This is one of the only SMD boards entered that has tented via...

PCB pcbdesign contest winners

AT Maker Prize Judging Report By Bill Binko

Dear all,I am happy to provide the winner and runners up of the 2018 PCBWay/ATMakers Assistive Technology Award. This year we had over a hundred submissions for consideration and several very strong candidates for the award. I am delighted to see this amount of interest in Assistive Technology among PCB designers.Judging Approach & CriteriaWhen judging submissions I reviewed the submissions for the following criteria:Eligible as an AT Project: Is the project in any way directed towards Ass...

ATMakers maker pcbwayer pcbdesign pcb Assistivetechnology

Manufacturing Process of Flexible Substrate

Introduction:The substractive process has been gradually unable to meet the processing requirements of high-density flexible substrates for miniaturization and high-performance packaging devices, and the semi-additive process has been increasingly applied to the manufacturing process of high-density flexible substrates. Semi-additive Process:The circuit formation of traditional flexible substrates adopts the subtractive method, which is mainly characterized by isotropy. That is to say, when etch...

New Flexible Substrate Manufacturing Technology ---Electrodeposition Polyimide Process

Introduction:As the wiring density of flexible substrate becomes higher and higher, the circuit made by subtractive process can no longer meet the requirements of circuit elaboration. Therefore, the industry gradually turns to the semi-additive manufacturing process. At the same time, some thin flexible substrates and embedded flexible substrates manufacturing technology is also gradually applied in the production of mass production.Electrodeposition Polyimide Process:The protective layer of fle...

Electrodeposition Polyimide Process

Some Points of PCB Design (1)

Introduction:Electronic products fill our work and life. The reasonable design of printed circuit board will directly affect the efficiency of electronic products. Whether the design of grounding, the electromagnetic compatibility, size of PCB board and the heat dissipation can meet the requirements of production and use is the focus of PCB design.The Key Points of PCB Design:Whether PCB design has good manufacturability is an important standard to measure PCB design. If you want to do this well...

Some Points of Flex-PCB Assembly

Introduction:The assembly of flexible PCB is basically same with the rigid-PCB assembly, and in actual manufacturing process, the operator will take different processes according to the different requirements of the process. Its common single-side mount flexible PCB assembly process as shown in the figure 1.Characteristics of Flex-PCB Assembly:Flex-PCB Attached to Rigid-PCB:Flexible PCB is easy to be deformed due to its light and thin characteristics, so it cannot be assembled directly on the SM...

PCB Assembly

Analysis of Silkscreen Printing Process

Background:PCB manufacturing is now a very developed high-tech industry, and the rapid development of silkscreen technology has injected new vitality into the industry, brought about major changes to the electronics industry, and it has become an indispensable part of various electronic equipment and instruments. The current screen printing technology has been able to adapt to the high density of PCB production.Youtube: https://www.youtube.com/watch?v=mwy9Kigv9MgMaterials:1) Stencil:Stencil ...

Acid Electroplating Copper Technology

Application of Acid Copper Plating in PCB Manufacturing:After a series of processes, the printed circuit board needs to be metallized and deposited on the hole wall surface of the through hole in order to achieve the purpose of interconnection and intercommunication between the board and the board and to achieve strong conductivity. Taking into consideration, copper metal is regarded as the most extensive deposition material in the industry. At present, the process of hole metallization generall...

The Last Surprise Activity of 2018 is Coming! ---Christmas Coupons Wheel

Introduction:How time flies!!! Christmas is coming soon! The year 2018 will be over in just over 20 days! A New Year is coming. Do you have any plans? Or how are you going to spend Christmas? The activity of Thanksgiving Day in PCBWay has just come to an end, and we have already prepared a Christmas surprise for you, which is “Christmas Coupon Wheel---the last big event of 2018”! So, please allow me to introduce the details of this Christmas activity for you all!If you want to collect coupons, p...

PI and PDN in High-Speed and High-Density PCBs

Introduction:One of the signs of the development of digital IC technology is that the feature size of transistors becomes smaller and smaller. With the continuous progress of very deep submicrometer technology, the integration degree of digital IC is getting higher and higher, the speed is getting faster and faster, the power consumption is getting larger and larger, and the core power supply voltage is getting lower and lower. This trend will continue for quite some time.PI (Power Integrity) an...

Flexible PCB and Its Manufacturing Process

Introduction:The development and wide application of flexible PCB are due to its remarkable advantages. First of all, its agile structure, tiny volume, light weight, good quality, which are satisfied the requirement of contemporary electronic product. Secondly, it can extend to three dimensional space, and improve the freedom of circuit design and mechanical structure design. These advantages not only reduce the workload of the whole machine and assembly errors, but also greatly improve the reli...

Flexible PCB flex-PCB

Overview of Flexible Printed Circuit Board

Introduction:Flexible Printed Circuit Board is a kind of Flexible, folding degrees higher polyester film or polyimide substrate after a series of production processes and made of a kind of components and circuits can be put, and can finish electrical functions with high reliability, good flexibility and light weight of the Printed Circuit Board, also can call it Flexible plate or soft Board, its English name is a Flexible Printed Circuit Board, FPCB for short. In the early days, it was mainly us...

Flexible Printed Circuit Board, Flex-PCB

Traditional Manufacturing Engineering of Flexible Substrate

Introduction:In recent years, with the rapid development of portable electronic products, flexible substrate to high-density development, flexible circuit board is widely used in IC circuit packaging, but also promote the development of flexible substrate to high-density direction. In the field of packaging, flexible substrates have some incomparable advantages over rigid substrates. For example, it is suitable for the assembly of ultra-thin chips, flexible electronic system packaging, medical i...

Flex-PCB Flexible PCB

Brief Introduction of PCB Cleaning Technologies

Abstract:The cleaning effect after PCB installation soldering is directly related to the electrical performance, working life and reliability of the product. Cleaning is also a key process in PCB production.The Necessity of Cleaning Process:Different types of flux are required for PCB assembly. Flux is usually composed of active agent, film agent, additive and solvent. Active agents are composed of organic acids or halogens, and additives are often composed of substances such as acidity regulato...

Design of Rectangular Sheet Type Component Solder Pad

Abstract:Thought the design software has been very advanced and convenient, and has been improving fast, it can’t satisfy all the designer, especially no solder pad library responding to all kinds of SMC or SMD. So analyze the influences of PCB solder pad on the reliability of PCA, and according to the relative quality requirements, give some simple design methods.Solder Pad Design:1. Rectangular Sheet Type Component Solder Pad:The inspection of welding quality of rectangular components, whet...

PCB Requirements for Typical SMT Equipment

Introduction:There are many types of SMT equipment. How to make the design of PCB meet its requirements is decided by the type of equipment. The basic requirements of typical SMT equipment to PCB in China are summarized as follows.Edge (Break-away tab):PCB in the process of SMT equipment is generally completed by rail transportation. When locating in equipment such as patch machine and wave soldering, it is guaranteed that it can be fixed reliably. Generally, more than 5mm should be reserved at ...

SMT

Introduction of MVI & ICT & X-Ray Inspection

MVI (Manual visual inspection):Manual visual inspection, shortly as MVI, is a method to detect defects in digital circuits by naked eye, magnifier and microscope in SMT production. In the manual visual inspection, you can also make a comprehensive judgment with the help of metal needles or bamboo toothpicks, and with appropriate force and speed across the QFP pins. In addition, MVI has a good effect in checking whether the IC pin has pseudo soldering or bridge connection. MVI with the aid of mag...

MVI (Manual visual inspection) ICT (In-Circuit Test) AXI (Automated X-Ray Inspection)

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