Rumor one: in the process of washing the PCB, the black is the most likely to cause color, if the PCB factory use of raw materials and self-made process slightly deviated, because the color difference caused by PCB non-performing rate increase.

Counterattack:. First of all, I have not touched the factory to show me the color of the problem of color is not a customer assessment of the project, it is difficult to quantify In addition, compared with the black, other colors are more likely to cause color difference because there is a black, as much as possible black The other colors are easy to have a variety of.

Rumor two: because the black PCB circuit alignment is difficult to identify will increase the difficulty of late maintenance and Debug, generally if there is no function deep RD (R & D) designers and powerful maintenance team brand, is not easy to use black PCB, This is why only a few high-end brands (such as ASUS) high-end series only with the reasons for the black PCB - it can be said that the use of a black PCB is a brand of RD design and post-maintenance team has confidence in the performance, from the side, One of their own strength of self-confidence.

Counterattack:. This argument is simply a nonsense nonsense, put it very reasonable like the first, debugging a drawing, the development of their own circuits, debugging time, can not see the drawings can say, who find a signal, completely leaning on the PCB board Above looking for.

Rumor three:. Improve the cost of maintenance Although the black PCB board is not to say that must be high-end goods, but the use of black PCB board reflects a manufacturer's confidence in their products, but also reflects their work carefully because the production of black PCB board follow-up maintenance are more Difficult, if the quality, but the follow-up maintenance costs will be great. So the use of black PCB board products are generally independent design, product quality confidence in high-end products will be used. In order to reduce maintenance costs, the use of black PCB board product quality control will be more stringent, can improve the yield of manufactured products.

Counterattack: the circuit design of the people will not be guilty not to install a forced to improve the cost of repair maintenance tools, not by the eyes to see the eyes to see where the circuit problems, send the Chinese Academy of Sciences to do research object. The General electronic market master, are modular parts, even if the chip will not be observed by PCB traces, mainly by virtue of tools and experience Imagine: the electronics market, Apple maintenance workers, do not look with the naked eye to find the pad. Do you confirm the green board and look for the naked eye?

Rumor four: in order to prevent plagiarism

Counterattack: brother, you have done 4 layer board, 6 layer board, 8 layer board, 20 layer board? Even if you do green, your eyes to see what? Do you know the multimeter?

Rumors five: good heat dissipation? Why use black oil is actually because the black oil than any other color of the oil to heat better we just know that the black object heat absorption better, in fact, from the theory of heat radiation, heat and heat absorption, the deeper the color, the more rough the surface Of the object of its thermal radiation is better, so a lot of heat sink was made of black, refrigerator condenser, compressor and so are black, is the truth.

Counterattack: black is conducive to heat, but your home PCB itself is so hot, your home design is enough according to the classical law of physical radiation - all objects of radiation skills is equal to its absorption skills, non-bold absorption capacity so forever, Under the same conditions will be non-black and black objects than the cooling capacity of black objects, heat dissipation significantly faster, and the deeper the color, the heat of the emissivity and absorption rate is higher Finally, the black absorbs all the light, with the natural conditions It is better than white heat absorption, but according to the law of classical radiation, black objects heat fast heat is also fast, so when it absorbs too much heat, it will shed the same heat, which can make it absorb more heat. If you need to heat the PCB, then it will be bright copper, but also with aluminum plate, these are not black. In fact, the color compared to other dimensions of the measures, minimal.MOSFET if you need good heat dissipation, will increase the front of the pad, the back of the solder mask removed.

2, because we used to see the green PCB, then also because of chance, chose the green paint as PCB solder material. But if 90% of the world's printed circuit boards are black, it is estimated that people will feel black and ugly, green but tall. It is estimated that Steve Jobs so strong obsessive-compulsive disorder, that is, like the black and the strong contrast of the bright gold, so the uniform choice of black. In fact, iPod has been green. The use of black pcb and high-end does not matter, but the designer of a style. Telecommunications of these blade servers, are tens of thousands or even hundreds of thousands of the price, are often green.

3, black PCB in the product is not easy to be found inside. This is the fact that if you are particularly concerned about this point, then forced to be a reason for it.