What is PCB Submission What does PCB mean?

It is to send the PCB you drew to the board manufacturer for production.

PCB (printedcircuitboard), the Chinese name is printed circuit board, also known as printed circuit board, printed circuit board, is an important electronic component, is the support of electronic components, is the provider of electrical connection of electronic components. Since it is made using electronic printing, it is called a "printed" circuit board. PCB copy board, that is, under the premise that there are already electronic products and circuit boards, the reverse research and development technology is used to reverse analyze the circuit board, and the original product PCB files, bill of materials (BOM) files, principle ** pieces and other technical documents and PCB silk screen production documents are carried out 1:

1. Restoration, and then use these technical files and production files for PCB board-making, component soldering, flying probe testing, circuit board debugging, and complete the complete copy of the original circuit board template.

The general saying is to send the PCB layout you make to the plate manufacturer and let them make the circuit board for you.

The PCB industry refers to the industry related to integrated circuit boards!!

It is usually said that the circuit board, there are many electronic components on it, and now people's lives are inseparable from it, mobile phones, TVs, computers, and all other electronic products are related to it!

The PCB is in English (printed

circuit

board) is an abbreviation for printed circuit board. Generally, the conductive pattern made of printed circuits, printed components or a combination of the two is called a printed circuit on an insulating material according to a predetermined design.

On the other hand, a conductive pattern that provides an electrical connection between components on an insulating substrate is called a printed circuit. In this way, the finished board of the printed circuit or printed circuit is called the printed circuit board, also known as the printed circuit board or printed circuit board.

Qixiang Circuit-PCB manufacturer. Business contact: 13424260717 PCB board schematic diagram Common error: It is submitted by Shenzhen Qixiang Circuit.

1) ERC reports that there is no access signal on the pins:

a.When creating a footprint, the io attribute is defined for the pin;

b.Inconsistent grid properties are modified when creating or placing components, and pins are not connected to the wires;

c.When creating a component, the PIN direction is reversed and must be non-pin

name.

2) The component runs out of the drawing boundary: the component is not created in the center of the drawing paper in the component library.

3) The created project file network table can only be partially called into the PCB: the netlist is not selected as global when generating the netlist.

4) When using a multi-part component that you have created, do not use annotations

PCB is printed circuit board

circuit

board, PCB) can be found in almost every electronic device. If there are electronic parts in a device, they are also embedded in PCBs of various sizes. In addition to fixing various small parts, the main function of the PCB is to provide the electrical connection of the upper parts.

As electronic devices become more and more complex, more and more parts are needed, and the circuits and parts on the PCB are becoming more and more dense.

A standard PCB looks like this--- computer motherboard. Bare boards (with no parts on them) are also commonly referred to as printed circuit boards

wiring

board（pwb）」。

The substrate of the board itself is made of insulating and non-bending materials. The fine that can be seen on the surface.

The circuit material is copper foil, which was originally covered on the entire board, but part of it is etched away during the manufacturing process, and the part left behind becomes a network of small lines. These lines are called conductors

pattern) or wiring, and is used to provide circuit connections to parts on a PCB.

Due to the increasingly complex processes in the current electronics industry, the requirements for the number of layers of PCB boards are getting higher and higher. In the field of boards, there are two more common types: 4-layer boards and 6-layer boards. One of the great advantages of multilayer board is that the power supply network and the ground network can bear more current while shielding more interference, which can greatly improve the stability of the whole system.

It is a chip resistor, 0805 package. If it is not a high-precision or uncommon resistance, then it is very cheap, and it is generally 1 yuan and 100 on the market. If it is wholesale, it is cheaper, 1 plate of 5000 is about 7 yuan.

It should be a chip resistor, which is blurry and unclear. If the silk screen next to the device on the circuit board is r?? , 99% of the resistance. （？is numbered by numbers).

PCB - Carrier of printed circuit boards, electronic components. You go home and take out the computer motherboard, dismantle all the electronic components on it, and leave a rectangular board, which is the PCB circuit board.

PCB (printed circuit board), the Chinese name is printed circuit board, also known as printed circuit board, printed circuit board, is an important electronic component, is the support of electronic components, is the carrier of electrical connection of electronic components. Since it is made using electronic printing, it is called a "printed" circuit board.

It is an empty circuit board that has not yet been sprayed with tin and patches.

There's no such thing as a free lunch! This scam has already been exposed by other friends, so the landlord is calm and calm!

**Firm! There are a lot of their gunners online. Can you get the money back?

They are fishing for big fish with a long line, and they can't be trusted too much, just for fun.

I think what others say is not as good as what I have tried myself, and only searching for what suits me is the best key for melody.

Hello PCB is the abbreviation of printed circuit board, the Chinese name is printed circuit board, also known as printed circuit board, printed circuit board. is a very important electronic component. For example, the circuit board of a mobile phone, the circuit board of a remote control, and the circuit board of a printer can all be called PCB. Please refer to it.

1.Wash the net: use the grinding paste to remove the grease (new net), the ghost paste to remove the pattern (the old net), remove the slurry powder to remove the net pulp and blue oil, wash the sundries with anti-white water, rinse the net with detergent, and finally rinse it with a high-pressure water gun, and finally clean it with pure water.

2.Drying:--The oven set temperature should be less than 48 degrees Celsius.

3.Agios film method: wash the net and wash it again with purified water.

According to the engineering film puzzle pattern, increase the water film by about 20%, select the water film, press one end of the water film on the net with a triangular ruler, and then use the triangular ruler to slowly scrape up, and then use a rubber scraper to gently press and scrape flat, and wipe the excess water with a towel to dry.

4.Use photosensitive glue (mesh paste): dry the screen plate and then apply the photosensitive glue, use a scraper box, and scrape it to the net, in which the screen printing green oil needs to be sizing three times, (about every 10 minutes or more) screen printing other anti-corrosion inks are twice, and the screen printing can be peeled off the glue (blue glue first on 50 micron water film to tear off the film, and then on the screen slurry twice, scrape three times each time, and dry after the sizing is completed.

5.The selection of mesh yarn generally includes screen printing of character ink, 120t, 100t, 110t mesh for anti-corrosion ink (green oil, bottom oil, surface oil), 51t carbon paste (carbon oil), and peelable ink for silk screen printing (blue glue 24t screen printing photosensitive circuit and 77t for heat-curing ink.

6.The selection of film line with 18K water film (without photosensitive glue with photosensitive adhesive on the net is easy to be uneven, such as burrs (dog teeth) and other problems), other anti-corrosion inks (green oil, bottom oil, surface oil) use photosensitive glue (mesh pulp), carbon paste (carbon oil) use 50 micron water film.

7.Use the required engineering graphics film to paste on the position selected by the screen, place it on the blasting machine for blasting, the selection of time (3000W spotlight), the line is generally in 60-80 seconds, green oil in 80-100 seconds, bottom character oil 40-60 seconds, carbon oil, blue gum 350-400 seconds.

8.Flush the net with pressurized water and dry.

After the screen is made, use the screen sealing glue (blue oil) to scrape the screen that is not covered by film or photosensitive glue on the screen screen and dry it.

10.Inspect, repair the net, write the completion date and the corresponding number, and record and archive and store.

The production of stencil requires photosensitive adhesive, squeegee blade, PCB film, an oven and a plate exposure machine.

The glue on the screen frame needs to be soaked in a special solution (the powder and water in a certain proportion) for one hour, and then it can be washed off with a water gun with pressure.

Scraping skills: when scraping, the angle of the scraper to the wire mesh is 45°, and it moves at a uniform speed from bottom to top.