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Flexible Printed Circuit

Flexible Printed Circuit Flexible Printed Circuit，It can be bent, wound and folded freely. The flexible circuit board is processed by using polyimide film as the base material. It is also called soft board or FPC in the industry. The process flow of flexible circuit board is divided into Double-... Read More

Cause of PCB falling solder plate

Cause of PCB falling solder plate PCB circuit board in the production process, often encounter some process defects, such as PCB circuit board copper wire off bad (is also often said to throw copper), affect product quality. The common reasons for PCB circuit board throwing copper are as follows:... Read More

How to deal with PCB signal crossing divider line?

In the process of PCB design, the division of the power plane or the division of the ground plane will lead to the incomplete plane. In this way, when the signal is routed, its reference plane will span from one power plane to another power plane. This phenomenon is called signal span division. ... Read More

Discussion on PCB electroplating hole filling process

The size of electronic products is becoming thinner and smaller, and directly stacking vias on blind vias is a design method for high-density interconnection. To do a good job of stacking holes, first of all, the flatness of the bottom of the hole should be done well. There are several manufactur... Read More

What is copper cladding?

1.Copper cladding The so-called copper coating, is the idle space on the circuit board as a datum, and then filled with solid copper, these copper areas are also known as copper filling. The significance of copper coating is: reduce ground impedance, improve anti-interference ability; Reduce volt... Read More

Types of PCB pads

1. Square pad It is often used when the components on the printed board are large and few, and the printed line is simple. When making a PCB by hand, using this pad is easy to achieve    2.Round pad Widely used in single-sided and double-sided printed boards, the parts are arranged regularl... Read More

Counterbore

Countersunk holes are drilled on the circuit board with a flat head drill needle or gong knife, but cannot be drilled through (i.e., semi through holes). The transition part between the hole wall at the outermost/largest hole diameter and the hole wall at the smallest hole diameter is parallel to... Read More

What is the role of the tooling strip with PCB?

In the PCB production process, there is another important process, that is, tooling strip. The reservation of process edge is of great significance for the subsequent SMT patch processing. The tooling strip is the part added on both sides or four sides of the PCB board, mainly to assist the SMT p... Read More

Introduction of Via-in-Pad：

Introduction of Via-in-Pad： It is well known that vias (VIA) can be divided into plated through hole, blind vias hole and buried vias hole, which have different functions. With the development of electronic products, vias play a vital role in the interlayer interconnection of printed circuit bo... Read More

DFM design of PCB manufacturing spacing

The electrical safety spacing mainly depends on the level of the plate-making factory, which is generally 0.15mm. In fact, it can be even closer. If the circuit is not related to the signal, as long as there is no short circuit and the current is sufficient, large current requires thicker wiring ... Read More

Several Inspection Methods of PCBA Board Short Circuit

In the process of SMT chip processing, short circuit is a very common poor processing phenomenon. The short circuited PCBA circuit board cannot be used normally. The following is a common inspection method for short circuit of PCBA board.   1. It is recommended to use a short circuit positi... Read More

Manufacturability design of PCB electrical safety distance

There are many PCB design rules. The following is an example of electrical safety spacing. Electrical rule setting is the design circuit board in the wiring must abide by the rules, including the safety distance, open circuit, short circuit setting. The setting of these parameters will affect the... Read More
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