Author name: 2PCB

In the PCB routing rules, there is a principle of “key signal lines first”, that is, key signals such as power, analog signals, high-speed signals, clock signals, differential signals and synchronization signals are routed first. Next, let’s take a closer look at the routing requirements of these key signals. Analog signal routing requirements The main …

Essential skills that PCB engineers must master: key signal routing Read More »

Layout and routing are the two most important links in PCB design. After engineers complete the layout and routing of PCB in accordance with the requirements of signal quality, DFM, EMC and other rules, they also need to check the relevant content. Layout check In PCB design, reasonable layout is the first step to the …

What checks need to be done after PCB layout and routing? Read More »

Decoupling capacitors are capacitors installed at the power supply end of components in the circuit. This capacitor can provide a more stable power supply, and can also reduce the noise of the components coupled to the power supply end, which can indirectly reduce the impact of the noise of other components on this component. Decoupling …

Do you know how to place decoupling capacitors during PCB layout? Read More »

Decoupling capacitors are capacitors installed at the power supply end of components in the circuit. This capacitor can provide a more stable power supply, and can also reduce the noise coupled to the power supply end of the component, which can indirectly reduce the impact of the noise of this component on other components. Decoupling …

Do you know how to place decoupling capacitors during PCB layout? Read More »

To learn high-speed PCB design, you must first know what a transmission line is. Signals will reflect because the traces on the PCB have a certain impedance. If the impedance on the line does not match the impedance at the output end, it will cause signal reflection. There will be a delay in the transmission …

Basic knowledge of high-speed PCB design (essential): transmission line Read More »

Power integrity, referred to as PI, is to confirm whether the voltage and current of the power source and destination meet the requirements. At present, power integrity is still one of the biggest challenges in high-speed PCB design. Power integrity involves the chip level, chip package level, circuit board level and system level. Among them, …

PCB industry terms and definitions – Power Integrity (PI) Read More »

Printed circuit boards (PCBs) are used to carry electronic components and provide circuits to connect the components. From a structural point of view, PCBs are divided into single-sided, double-sided and multi-layer boards. Single-sided Single-sided is the most basic PCB, where the parts are concentrated on one side and the wires are concentrated on the other …

Can’t tell the difference between single-sided, double-sided and multi-layer PCB? Read More »

Differential signal VS single-ended signal Single-ended signal Single-ended signal is a simple and common way to transmit electrical signals from a transmitter to a receiver. Electrical signals are transmitted through voltage (usually a changing voltage) that is based on a fixed potential, usually a 0V node called “ground”. Differential signal Differential transmission is a signal …

Differential signal VS single-ended signal Do you know the PCB wiring requirements of differential lines? Read More »

On the basis of comprehensive consideration of signal quality, EMC, thermal design, DFM, DFT, structure, safety regulations and other requirements, the components are reasonably placed on the board. ——PCB layout Except for special requirements, all component pad routing must meet thermal design requirements. ——General principles of PCB routing It can be seen that in PCB …

Basic knowledge of PCB layout design (essential): thermal design requirements Read More »

PCB device layout is not a matter of arbitrariness. It has certain rules that everyone needs to follow. In addition to general requirements, some special devices will also have different layout requirements. Layout requirements for crimping devices 1) There shall be no components higher than 3mm around the surface of the bent/male and bent/female crimping …

In PCB design, do you want to know the layout requirements of some special devices? Read More »