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What role do those “special pads” on the PCB play?

  1. Plum blossom pad. 1: The fixing hole needs to be non-metallized. During wave soldering, if the fixing hole is a metalized hole, tin will block the hole during reflow soldering. 2. Fixing mounting holes as quincunx pads is generally used for mounting hole GND network, because generally... Read More

Why does PCB design generally control 50 ohm impedance?

In the process of PCB design, before routing, we generally stack the items we want to design, and calculate the impedance based on the thickness, substrate, number of layers and other information. After the calculation, the following content can generally be obtained.     As can be see... Read More

How to reverse the schematic diagram of PCB copy board

PCB copy board, the industry is often referred to as circuit board copy board, circuit board clone, circuit board copy, PCB clone, PCB reverse design or PCB reverse development. That is, on the premise that there are physical objects of electronic products and circuit boards, reverse analysis of ... Read More

Analysis of three main reasons for PCB rejection

The PCB copper wire falls off (also commonly referred to as dumping copper). PCB factories all say that it is a laminate problem and requires their production factories to bear bad losses.   1. The copper foil is over-etched. The electrolytic copper foil used in the market is generally singl... Read More

PCB industry terms and definitions: DIP and SIP

Dual in-line package (DIP) Dual-in-line package (DIP—dual-in-line package), a package form of components. Two rows of leads extend from the side of the device and are at right angles to a plane parallel to the body of the component. The chip adopting this packaging method has two rows of pins, w... Read More

Wearable device requirements for PCB materials

Due to the small size and size, there are almost no existing printed circuit board standards for the growing wearable IoT market. Before these standards came out, we had to rely on the knowledge and manufacturing experience learned in board-level development and think about how to apply them to u... Read More

6 tips to teach you to choose PCB components

1. Use a good grounding method                                                                                                 (Source: Electronic Enthusiast Network) Ensure that the design has sufficient bypass capacitors and ground planes. When using an integrated circuit, make sure to use a su... Read More

Gold, silver and copper in the popular science PCB board

Printed Circuit Board (PCB) is a basic electronic component widely used in various electronic and related products. PCB is sometimes called PWB (Printed Wire Board). It used to be more in Hong Kong and Japan before, but now it is less (in fact, PCB and PWB are different). In Western countries and... Read More

The destructive analysis of laser coding on PCB

Laser marking technology is one of the largest application areas of laser processing. Laser marking is a marking method that uses a high-energy density laser to locally irradiate the workpiece to vaporize the surface material or cause a chemical reaction to change color, thereby leaving a permane... Read More

6 tips to avoid electromagnetic problems in PCB design

In PCB design, electromagnetic compatibility (EMC) and related electromagnetic interference (EMI) have always been two major problems that have caused engineers to headache, especially in today’s circuit board design and component packaging are shrinking, and OEMs require higher-speed syste... Read More

There are seven tricks for LED switching power supply PCB board design

In the design of switching power supply, if the PCB board is not designed properly, it will radiate too much electromagnetic interference. The PCB board design with stable power supply work now summarizes the seven tricks: through the analysis of the matters needing attention in each step, the PC... Read More

The future of 5G, edge computing and the Internet of Things on PCB boards are key drivers of Industry 4.0

The Internet of Things (IOT) will have an impact on almost all industries, but it will have the greatest impact on the manufacturing industry. In fact, the Internet of Things has the potential to transform traditional linear systems into dynamic interconnected systems, and may be the biggest driv... Read More
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