1. Spacing Between SMDs The spacing between SMDs should neither be too large (which wastes PCB area) nor too small to avoid solder paste printing adhesion and difficulties in soldering repairs. The spacing can refer to the following specifications: ■ Same component: ≥ 0.3mm■ Different components: ≥ 0.13×h+0.3mm (h is the maximum height difference between … Read more
1. Spacing Between SMD Components The spacing between SMD components is a crucial issue that engineers must pay attention to during layout. If the spacing is too small, it becomes very difficult to print solder paste and avoid solder bridging.The recommended distances are as follows: Spacing requirements for SMD components: Same type of components:≥0.3mm Different … Read more
During this circuit board test, I found that one circuit board could never be programmed. So I checked: 1. There are no issues with the power supply and ground. 2. Using the oscilloscope to measure whether the crystal oscillator is oscillating, I found a strange issue: a 24MHz sine wave appeared at the XOUT pin, … Read more
01 Introduction The SMD RGB light is a three-color LED light made using SMD technology (Surface Mount Technology). Specifically, it packages one red, one green, and one blue light-emitting diode into a light module, which is then soldered onto a PCB using SMT solder paste to create a unit module. This technology improves the durability … Read more
Click the button above to follow us and addstar★ to get timely industry news How much do you know about circuit board knowledge? What is line width, line spacing, and how are hole attributes classified? What is SMD PAD, NSMD PAD? What is VIPPO, POFV, VIP? What is HDI board? What board is called anylayer? … Read more
Chip packaging, simply put, is the process of placing the integrated circuit die produced by the foundry onto a substrate that serves as a carrier, then bringing out the pins and securing the package into a whole. It protects the chip, acting as its shell, not only fixing and sealing the chip but also enhancing … Read more
Soldering SMD components on a PCB is a true test of skill, with numerous chip pins and capacitors and resistors smaller than sand grains, issues like cold solder joints and short circuits frequently arise and are extremely difficult to detect. This requires high levels of technique and patience. More importantly, there are some small tips … Read more
This article organizes some detailed issues that need attention in layout. Let’s check if you know them all! 01 Spacing of SMD Components The spacing between surface mount devices is a critical issue that engineers must pay attention to during layout. The spacing between components should not be too large (which wastes PCB space) or … Read more
Today, I will share with you the 8 common PCB markings found on PCB boards. From left to right: Stamping hole – Via type – Solder mask pad – Reference mark From left to right: Stamping hole – Mounting hole – Solder mask pad – Reference mark From left to right: PCB slot, PCB button, … Read more
Click the “Mechanical and Electronic Engineering Technology” above to follow us Your smartphone, computer, smartwatch, and even the smart socket and router at home are all high-tech products whose core component is the PCB, or printed circuit board. Without it, these devices cannot perform their various complex functions. So, what exactly is PCB design? Why … Read more