Design requirements for PCB： 1. PCB design shoud be right This is the most basic and important requirement of PCB…
Flexible circuits are used in various applications where conductors are connected to each other,these conductor interconnections must be bendable or…
Why the insulation solder mask on the board will peel off after the PCB passes the automatic soldering furnace. There are three…
With the continuous development of science and technology, PCB laser drilling is more and more widely used.Here, let the flexible circuit…
PCB design mistake 1: Overlap of weld pad The overlap of the pad (except for surface welding) means the overlap of…
1.The present situation Printed circuit boards cannot be reassembled after assembly, the cost loss is very high caused by microvoid.The problem is due to PCB…
The early process of Rigid-flex PCB board is use connector or hotbar process to connect two PCBs with flex board.This combination with the flex board and rigid PCB process is time-consuming and laborious, so customers transfer the assembly to PCB manufacturer to make rigid-flex PCB. In addition to the price, the use of Rigid-flex Board has many advantages, listed as follows: 1.It can effectively save the space on the circuit board and save the use of the connector or the HotBar process, Because of flex PCB and rigid PCB get together, so that require the use of connectors or HotBar process space can be saved, saved space is very important for some high density board,it also saved the cost of using the parts of the connector or the cost 2. of the HotBar process. In addition, the space between the two pieces of the board can also become more compact because it saves the connector. 3.The distance of the signal transmission is shortened and the speed is increased, and the reliability can be improved effectively. The traditional transmission of the signal through the connector is circuit board --->connector--->flex board--->connector--->circuit board. The signal transmission of rigid-flex PCB is reduced to the circuit board--->flex PCB---> circuit board.The distance between signal transmission is shorter, and the problem of signal transmission attenuation between different media is also reduced.The wiring on the general circuit board is copper material, and the contact terminal of the connector is gold-plated. The solder joints are plated with tin, and solder paste is applied to the printed circuit board. The transmission of signals between different metal will be attenuated.If we change to rigid-flex boards, these media will become less, and the ability of signal transmission can also be improved. 4. Simplifying the assembly of products and saving the time of assembly The use of rigid-flex PCB can reduce the time of SMT process, because the number of connectors is less.It also reduces the time for the assembly of the whole machine, because it saves the assembly of the flex board into the connector, or saves the …
When we design PCB, it’s necessary consider how to calculate PCB trace width/space for the through current.so what is the relationship between PCB trace width and…
Ceramic circuit board and Metal PCB are good in heat dissipation of PCB board.The application of the traditional LED heat dissipation substrate,Metal Core…
All PCB board looks almost same from the surface.Through the surface we see differences, and these differences are crucial to the durability and…