The definition of Bare Board Before discuss bare board E-testing process, we should learn the definition of bare board first. Bare Board, simple says an unassembled PCB. A PCB has all lines, pads and layers intact, but without components installed. How to make a bare board ensure good? To most customers, bare board quality is […]
Author Archives: emma-mc
This paper will focus on discuss Different understanding of Motherboard between flexible PCB engineers with new guys. The name of Mother Board Motherboard, also called Backpanel, Backplane, back plane, or matrix board. In engineer communication, usually use mother board. The definition of Mother Board For normal people, the definition of mother board is below: The […]
The Definition of back-driving from Wikipedia A back-drive is a component used in reverse to obtain its input from its output. From this sentence, most professional engineer may can understand. But for most new PCB designers or normal people, the definition of back-driving also confuses. The simple understand of Back-driving So, 4MCPCB experts have summary […]
Why we should learn the B-stage definition? Recent weeks ago, some friends asked some B-stage of PCB board questions. Emma have searched on Google, but none good result,. Then ask some 4MCPCB colleague, then get some idea about the B – stage of PCB board. For most normal PCB guys, B-stage is a strange definition. […]
This paper we are going to discuss B&B. B&B is short for Blind and Buried via holes. If you have follow 4MCPCB update, you may have memory about Blind and Buried via holes. And in this paper we will introduce some different content regarding B&B. B&B is a special PCB layer connected method Blind and […]
The reason why we introduce Impedance Control applicate in TV products? 4MCPCB expert told Emma a TV example to explain impedance control application. You know, most TV is connected with antenna or satellite dish, then you can look at it and change differed channel. In the PCB experts world, TV is the typical impedance control […]
Top 3 topic of impedance cotrol PCB impedance of PCB board Important of control Impedance impedance control application We have introduce Impedance of PCB board, have discussed the simple exactly definition of impedance. This article will focus on the Important of control Impedance. The theory of impedance of PCB board There was a situation, that […]
Top 3 topic of impedance cotrol PCB impedance of PCB board Important of control Impedance impedance control application Why we discuss Impedance of PCB board? Even though the definition of impedance of PCB board can be searched on Google. There were many green hands don’t know what is the impedance of PCB board. Most of […]
In this paper, we are going to discuss how to use Gerber file for PCB manufacturing process. Now most of PCB design are use CAD, Computer Aided Design. The flexible board designer has prepared his layout on CAD. There were many software for flexible PCB board CAD design process. But choose which one is the […]
This paper will focuse on The forecast of China’s CCL market. In 2016, China’s CCL price have many changes. One reason is the raw CCL price to have risen by about 3 percent. Then electronic car industry also needs more copper to make a battery, the demand raw CCL material have become bigger. The reason […]