Delivery Service Update due to COVID19 Outbreak

Arrangement of PCBWay factory during Chingming Festival:1).April 3rd-April 4th: Do not accept expedited order.2).April 4th: The factory will take a day off.3).April 4th-April 5th: The pickup and delivery services will be suspended. Orders will be sent from April 6th.Dear PCBWayers:Due to the severe outbreak of COVID19 worldwide, some countries and regions have adopted a series of prevention and control measures, which will affect the international transportation business. As a result, your order...

Delivery Service FedEX DHL COVID19

Controlling EMI Radiation with PCB Layered Stack-up

There are many ways to solve EMI problems. Modern EMI suppression methods include: using EMI suppression coatings, selecting appropriate EMI suppression parts, and EMI simulation design. This article starts from the most basic PCB layout, discusses the role and design skills of PCB layered stack-up in controlling EMI radiation.Electricity BusbarReasonably placing a capacitor of appropriate capacity near the power supply pin of the IC can make the output voltage of the IC jump faster. However, th...

Electricity Busbar PCB layout EMI Radiation,Stack-up

Global Collaboration for Combating COVID-19 : Free Masks for PCBWayers!

Love without borders conquers all fear! — Yan, CEO of PCBWayOne World One Fight!These days, COVID19 ravages all of the world, and every country has suffered heavy losses. We must know to win this inevitable battle every one of us should stand together and hold hands tightly. Love will conquer all fears!After more than a month, with the efforts of people across the country, the development of the epidemic ...

COVID-19 Mask Giveaway Ordinary Disposable Masks StandWithPCBWayers Free Masks Combating COVID-19

How to Ensure PCB Design Signal Integrity?

Signal integrity (SI) refers to the quality of the signal on the signal line, that is, the ability of the signal to respond with the correct timing and voltage in the circuit. If the signal in the circuit can reach the receiver with the required timing, duration and voltage amplitude, then it can be determined that the circuit has better signal integrity. Conversely, when the signal does not respond properly, a signal integrity problem occurs.With the use of high-speed devices and more and more ...

Crosstalk, Stack-up Signal Integrity

LM317 Current Boosting Secrets

By Hesam Moshiri, Anson BaoLM317 is one of the most popular adjustable regulator chips. The output voltage of the regulator can be adjusted from 1.25V to 35V. However, the chip can deliver currents up to 1.5A which is not enough for some power applications. In this article, I will discuss two methods of LM317 current boosting, using power PNP and NPN pass transistors.[A] Circuit AnalysisAccording to the LM317 datasheet: “The LM317 [1, 2] device is an adjustable three-terminal positive-voltage re...

LM317 Current Boosting Secrets

Common IPC standards for PCB

1) IPC-ESD-2020The joint standard for the development of electrostatic discharge control programs. Includes the design, establishment, implementation, and maintenance necessary for electrostatic discharge control procedures. Provide guidance for handling and protection during electrostatic discharge sensitive periods based on the historical experience of certain military and commercial organizations.2) IPC-SA-61ASemi-aqueous cleaning manual after welding. Including all aspects of semi-aqueous cl...

Surface Mount Technology Welding Technology IPC Standards

Characteristics and Maintenance of Common Circuit board and Component Failures

1. The fault characteristics and maintenance of industrial control circuit board capacitor damageThe failure caused by capacitor damage is the highest in electronic equipment, especially the damage of the electrolytic capacitor is the most common.Capacitor damage manifests itself as: 1. capacity becomes smaller; 2. complete loss of capacity; 3. leakage; 4. short circuit.Capacitors play different roles in the circuit, and the faults they cause also have their own characteristics. In industrial co...

Impedance Matching in High-Speed PCB Design

Impedance matchingImpedance matching means that when energy is transmitted, the load impedance must be equal to the characteristic impedance of the transmission line. At this time, there is no reflection in the transmission, which indicates that all energy is absorbed by the load. On the contrary, there is energy loss in transmission. In high-speed PCB design, the matching of impedance is related to the quality of the signal.When do PCB traces need to be impedance matched?It does not mainly look...

Parallel terminal matching Series termination matching Impedance matching

Top 10 Failure Analysis Techniques for PCB

As a carrier of various components and a hub for circuit signal transmission, PCB has become the most important and critical part of electronic information products. The quality and reliability of the PCB determine the quality and reliability of the entire equipment. However, due to cost and technical reasons, a large number of failures have occurred during the production and application of PCBs.For this kind of failure problem, we need to use some commonly used failure analysis techniques to en...

Scanning acoustic microscope Slice analysis X-ray fluoroscopy

Real-time updates of production during the epidemic

Dear PCBWayer,Our factory has resumed production as planned since February 10,2020. In response to the national policy, and at the same time to ensure the health and safety of all employees, we will conduct safety isolation and observation for some employees for 14 days. Production capacity (Updated on March 11,2020)Orders for PCB, SMT and Stencil with all parameter's options are acceptable. Production is currently proceeding at the fastest speed, and lead time has also been significantly reduce...

2019nCoV update epidemic, pcbway

PCBWay's factories have started production (Updated on Feb 10,2020)

Dear PCBWayers,With the efforts of the government and all society, the epidemic has been greatly controlled. Our factory also has resumed production as planned today, February 10,2020.At present, the epidemic situation has not been completely over. In response to the national policy, and at the same time to ensure the health and safety of all employees, we will conduct safety isolation and observation for some employees for 14 days, so about 1/3 to 1/2 of factory employees have not fully on duty...

pcb production workers factory pcbway back to work

Stack-up Design in PCB

In general, PCB stack-up design mainly follows two rules:1. Each trace layer must have an adjacent reference layer (power or ground layer);2. Maintain a minimum distance between the adjacent main power layer and the ground layer to provide a large coupling capacitance; The following is an example to explain the stack-up from two-layer board to eight-layer board:I. Stack-up of single-sided PCB boards and double-sided PCB boardsFor two-layer boards, the problem of lamination is no longer due to th...

Stack-up EMI

Generate Position File in Kicad

1.Set the origin pointSelect the menu bar Place-> Drilling and Position Offset, place the origin at the bottom left corner of the PCB board frame, and then place [Layer Alignment Mark] to the position of the origin just placed.2.Generate Footprint Position FileClick the menu [File] >> [Fabrication Output] >> [Footprint Position (.pos) File], select the output directory, other default, click [Generate Position File]. Open the package location file with Notepad or text editor. You c...

PCB Position File Kicad

We Are Growing!!! 15 highlights of PCBWay’s Amazing 2019

Dear PCBWayers,Happy New Year. It is a great honour to have you in our community and PCBWay is moving forward with new goals. Looking back at 2019, "Growing" has been running through this extraordinary year. The following is 15 highlights of PCBWay’s Amazing 2019.1. こんにちは、ついにオンラインになりました。PCBWay.jp is online that is great news for PCBWayers in Japan. 2. Pro service , Advanced PCB comes out. High-end PCB Manufacturer with multilayer, HDI, Rogers, High Tg FR4, IPC2 and IPC3. Learn more>>3. PCB...

factory contest PCBWayer highlights happy new year PCBWay PCBWay2019

Low Noise Adjustable Linear AC-DC Power Supply

By Hesam Moshiri, Anson BaoFeatures:AC – DC ConversionDouble output voltages (Positive – Ground – Negative)Adjustable positive and negative railsJust a Single-Output AC transformerOutput noise (20MHz-BWL, no load): Around 1.12mVpp Low noise and stable outputs (ideal to power Opamps)Output Voltage: +/-1.25V to +/-25V Maximum output current: 300mA to 500mA Cheap and easy to solder (all component packages are DIP)A double output low noise power supply is an essential tool for any electronics enthus...

AC-DC Power Supply

Impedance Matching in HDI PCB Design

Impedance matchingImpedance matching means that when source is transmitted, the load impedance must be equal to the characteristic impedance of the transmission line. At this situation, the transmission will not reflect, which indicates that all source is absorbed by the load. Conversely, there is source loss during transmission. In HDI PCB design, impedance matching is related to the quality of the signal.When do PCB traces need impedance matching?It does not mainly decided by the frequency, bu...

Parallel terminal matching Series termination matching PCB design Impedance Matching HDI

Important Processes of Rigid-Flex PCB Manufacturing

Introduction:Flexible printed circuit boards are used in a wide range of applications, almost all types of electronic products are involved, and the emergence of rigid-flex PCBs for the complex electronic packaging interconnection provides a better way to produce perhaps the most complex interconnection structure of the PCB products. The rigid-flex PCB includes two technologies what are the flexible printed circuit board technology and the rigid printed circuit board technology. For example, by ...

Rigid-Flex PCB,Drilling,Electroless Plating

Merry Christmas and Happy New Year!!! More than 10K PCBWay Christmas Badges 2019 are given away

Now the festive atmosphere of Christmas is everywhere. I think you are all doing a lot to prepare for this important festival in December. As your loyal partner, PCBWay has also been preparing for Christmas events, and I hope to celebrate the festival with PCBWayers around the world.This year's Christmas gifts are 3 Christmas badges, in the shape of ball, star and reno (Special thanks Jorge @akirasan for such amazing designs). They can be perfectly used to decorate the Christmas tree. We have pr...

coupon badge Christmas pcb pcb prototype free Christmas

Programmable Police LED Flasher Using an STM8 [36+36 LEDs]

By Hesam Moshiri, Anson BaoThe STM8S001J3 is an 8-bit microcontroller that offers 8 Kbytes of Flash program memory, plus an integrated true data EEPROM. It is referred to as a low-density device in the STM8S microcontroller family. This MCU offered in a small SO8N package. In this article, we are going to build a programmable Police LED Flasher device that can be used for vehicles, motorcycles, and bicycles.[1]: Circuit AnalysisFigure 1 shows the schematic diagram of the device. The heart of thi...

police led flasher using an stm8

7 Tips in Designing PCB

1. Flexible application of via designFor high-voltage, high-current, high-power, and high-heat components, the layout of components should be as loose as possible when designing printed boards. The size of the component pads and the pad spacing of each solder pin can also be designed bigger. If the number of circuit components and the size of the printed board allow, you can also design some vias in the space between the pads of the components and the copper foil of the printed board according t...

copper foil component PCB

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