Nowadays, precise components is widely used in some advanced electronics devices, such as fine pitch FPGA component from Xilinx. But this take extra challenge to PCB designer and PCB manufacturing capability accordingly. Today, we simply discuss the PCB design guideline for 0.4mm fine pith BGA component to facilitate in PCB manufacturing. Standard guideline points: No … Continued
The standard 6L layers stackup is the most common options selected by most PCB designers. The standard layer stackup can be utilized in most applications. As a standard, you can get a variable layer stack up from Weller’s engineering suggestion, which is defined by following PCB thickness: 0.7mm/0.8mm/1.0mm/1.6mm/2.0mm/2.4mm/3.0mm Final finished copper thickness: 1/1/1/1/1/1oz ( (Note: … Continued
Thermal management is very crucial in PCB design to transmit the heat of the PCB board with some critical high power components assembled. The four methods of thermal management 1. Thermal Vias,They can be mechanically drilled blind or through vias. 2. Laser, stacked micro-Vias, become more common, especially with low i/o pitch components. 3. Coppr … Continued
More and more PCB designers are interested in impedance track for USB circuit board of 90 ohm impedance. For 90 ohm impedance, there are two options of circuit track to get that: One option is to get 90ohm impedance by single-end impedance track, with stack up as below: The other option is by differential impedance … Continued
1. Principle One: Avoid Vias too Close to the SMT Pads If the via without oil plug hole, we will punch the via too close to the SMT pad during layout, which will cause the solder to flow through the via to the other side of the PCB during the reflow of the SMT pad … Continued
The DRC (design rule check) is an in-depth review of your PCB fabrication data, which is carried out by our experienced CAM station engineers before production of your circuit boards even begins. The DRC is an extremely important step in circuit board manufacturing. The customer’s data are verified for manufacturability and for observance of required … Continued
Coplanar Waveguide is a type of PCB Impedance When it come to talk about PCB impedance, often it refer to talk single-end impedance,differential impedance.There is another type of impedance called co-planar impedance. What is co-planar impedance It is the impedance measured from signal track when it transmit the signals between GND and VCC zone. What … Continued
Background The quality of SMT soldering has a great impact on the life of any electronic product, and there are many reason of SMT soldering quality that are actually affected in the production process.The following are some main factors affecting SMT soldering quality. 1-BOM preparation As one of the most important composite materials in SMT, … Continued
Via in pad is the design practice of placing a via in the copper landing pad of a component. Compared to standard PCB via routing, via in pad allows a design to use smaller component pitch sizes and further reduce the PCBs overall size. With component manufactures pushing smaller parts every year and the demand … Continued
Nowadays the digital world is getting simpler and simpler. Your phone is getting smarter and your computer is no longer heavy.You can work on your laptop and keep your business running while you board a flight. You can also watch your favorite action movie on your smartphone, or you can just plug in your wireless … Continued
