PCB corrosion is caused by many different factors, such as Atmospheric Corrosion, Localized Corrosion, Electric Corrosion, Electrolytic Corrosion, Electrolytic Dendrite Formation, Fretting Corrosion and Intergranular Corrosion. Corrosion can be extremely harmful to PCBs. Although there are many reasons that can cause P...

The membrane switch uses SMD LED lamps (0603, 0805, 1206). According to the color of the luminous tube, LED can be divided into white light, red, orange, yellow, green (subdivided into yellow-green, standard green and pure green), blue light and so on. In addition, some light-emitting diodes contain chips of two or thr...

The heat generated by electronic equipment causes the internal temperature to rise rapidly. If the heat is not dissipated in time, the equipment will continue to heat up and the components will overheat and fail, resulting in a decrease in the reliability of electronic equipment. Therefore, PCB heat dissipation is a ve...

Membrane switches and PCBs are inextricably linked. This link is also reflected in the design process of the two. In order to design an efficient PCB and membrane switch, engineer must have a relatively handy design software. Let's take a look at the commonly used PCB/Membrane Switch design software. 1.Protel/DXP/A...

FR-4 is a glass epoxy laminate, most commonly used in PCBs (printed circuit boards). It is used in various flexible printed circuit boards and other semi-rigid variants. It shows excellent high strength and flame retardancy. The easy integration of applications and the allowable component mounting make it the material ...

We will encounter various safety spacing issues in ordinary PCB design, such as the spacing between vias and pads, the spacing between traces and traces, etc., which should be considered. . So today we will divide these spacing requirements into two categories, one is: electrical safety spacing; the other is: non-elect...

The manufacture of flexible PCBs involves several complicated steps, and extreme care must be taken. Some design or manufacturing defects can cause the entire circuit board to fail. During the PCB manufacturing process, please follow the precautions listed below: 1. Use the right type and quantity of materials to maint...

The choice of components and the size of the PCB are interdependent. Therefore, when choosing the right components for rigid flexible printed circuit boards (PCBs) or other types of PCBs, the footprint of the PCB must also be considered. The package is the basic layout of the PCB. It includes electrical and mechanical ...

Learning to contact a new technology will always encounter various problems, and learning EMC is no exception. EMC includes two parts: EMS and EMI. Generally speaking, solving the EMC problem is actually solving the external radiation interference of electronic equipment, or how to prevent the equipment and electronic ...

In Membrane Switch production, we use LEDs very often. Today, we are going to introduce LED Aluminum Substrates. As soon as LED aluminum substrates came to the market, the development of the heat dissipation application industry started. Because of the heat dissipation characteristics of LED aluminum substrates, and al...

1. Shape: shape, conductor line, insulation treatment, liner combination, etc. should meet the requirements of the drawing or provide physical samples. 2. Material: panel, substrate, silver paste, carbon ink, spacer, adhesive, adhesive, reinforcing plate, insulation printing should meet the requirements of the drawing....

White light LED is a voltage-sensitive device. In actual work, the current is 20mA as the upper limit, but the current will often increase due to various reasons in use. If no protective measures are taken, this increased current The LED will be damaged after a certain time and range. The main reasons for LED damage ar...