What is a blank PCB board ?

blank sided pcb
  • A blank pcb board is a simple circuit board. No electronic components on the blank PCB board. We need to combine various originals on a blank pcb board. In this way, the circuit board can achieve the functions we want. We usually refer to blank circuit boards as copper-plated circuit boards.
  • The reason why it is called a blank pcb board is that there is a layer of copper plating around it. Let us not neglect this layer of copper plating. This is a distinctive feature of blank circuit boards. Abstract To put it simply, a blank pcb board are empty circuit board free from any contacts as well as devoid of pieces that are used and installed in the creation of actual circuit boards.

Usefulness of blank circuit boards

Blank circuit boards have only basic channels, patterns, copper coatings and circuit substrates. The design of the blank circuit board is very simple. Engineers and designers are free to add components as needed. This blank circuit board provides flexibility and enables mass production.

Compared with other circuit board wiring methods, blank circuit boards require more design work. However, after the blank circuit board is assembled and manufactured, it can often be automated. This makes a blank circuit board the cheapest and most effective option.

Use a blank circuit board after adding components. The blank circuit board eventually becomes a complete circuit board. If matched with the right components, it will have multiple uses. Therefore, blank circuit boards have greater flexibility than single-sided circuit boards, double sided circuit boards, and provides flexibility.

Use a blank circuit board after adding components. The blank pcb board eventually becomes a complete circuit board. If matched with the right components, it will have multiple uses. Therefore, blank circuit boards have greater flexibility than single-sided circuit boards, double sided circuit boards, and provides flexibility.

When we make pcb, blank pcb board is essential. Because all circuits and traces need to be operated on a blank circuit board. Usually the manufacturer will print a design on the blank circuit board to represent the circuit, and then add components and soldering circuits to make the blank pcb board work normally.It can also be seen that the blank circuit board is the basis of all circuit boards.

blank sided pcb
double sided pcb

Do you want to make a blank pcb yourself? Do you know what materials are needed? Do you know what is the use of the blank pcb?

Of course, it is also very important to check whether the circuit board is faulty after production. Do the newly produced blank circuit boards on the market also need to be inspected? Why test? How to check? Do you know all this?

Blank circuit board material

There are many materials for making blank circuit boards, most of which have copper coatings. Some people say that the color of the material is about quality. This statement is wrong. The color of the material is just a personalized expression, and has nothing to do with quality.

The reason why there is a copper coating on the surface is because copper is a very good conductor and heat resistant. The good heat resistance of copper is good for the blank circuit board to work well with the current during use.

How to make a blank circuit board yourself.

There are four processes in the production of circuit boards.

  1. Line draft — (drawing by PROTEL or other related LAYOUT software, and then transfer to transparencies or tracing paper)
  2. Exposure—(The photosensitive circuit board is illuminated by a desk lamp or exposure lamp to print the line draft on the photosensitive board)
  3. Development—(Use a developer to wash off the sensitizer after exposure, leaving a line draft)
  4. Etching—(Wash away the unnecessary copper foil and leave the lines we need)

If you like and want to make a circuit board yourself, you can try it.

What is it used for

As electronic devices become more and more complex, more parts are required. The circuits and parts on the circuit boards are getting denser. Blank circuit boards (no parts on the circuit board) are also often called “printed circuit boards.

The substrate of the board itself is made of materials that are insulated and not flexible. The small circuit material that can be seen on the surface is copper. Foil,Aluminum foil covers the original copper foil on the entire board, but part of it is etched away during the manufacturing process, and the remaining part becomes a net-like small circuit.Circuit connections of components on the PCB will use it.

blank sided pcb

blank pcb board testing

Why do blank circuit board testing

There are many reasons for testing blank circuit boards. It serves as the basic frame of the circuit board. The blank circuit board may malfunction during the installation of wires and components, causing many problems.

Although failures are not common, the blank circuit board may already have defects before adding components. The more common problems are over-etching, under-etching and holes. Even a small defect may lead to the failure of the manufacturing of additional components in the future. This will cause more trouble. Therefore, a blank pcb board is manufactured. It is necessary to carry out quality inspection. Check if it is qualified.

Simply put, when using blank circuit boards to make other circuit boards. With the increase in component density, the demand for multilayer PCB boards continues to increase. It becomes even more important for blank circuit boards to undergo quality testing. After assembling a multilayer PCB, once a failure occurs, it is almost impossible to repair it.If the blank circuit board has been faulty at the beginning. In this way, when manufacturing other circuit boards later, it is equivalent to wasting time and manufacturing costs.

Another metaphor. If the blank pcb board is the skeleton of the circuit board, the components are organs and muscles. Components can be very expensive and often critical, so in the long run, having a strong frame can prevent high-end components from wasting.

The benefits of blank circuit testing

When the blank circuit board is finished, it has many advantages to test it in time.And, after the blank circuit board is made, don’t forget to check for faults. This step in the manufacturing process can avoid many problems. A small amount of early capital investment can save a lot of maintenance and replacement costs.

At the same time, blank circuit board testing helps to find problems early in the manufacturing process. Finding the problem early means finding the root cause of the problem and being able to solve the problem at its root.

If the problem is discovered in the follow-up process, it will be difficult to find the root cause. Once the PCB board is covered by the components, it is impossible to determine what caused the problem. Early testing helps to troubleshoot the root cause.

Testing also simplifies the entire process. If problems are discovered and resolved during the prototype development phase, the subsequent production phases can proceed without hindrance.

How to know if the blank pcb board is damaged.

There are two ways to test whether the blank PCB is faulty. One is electrical testing. The second is the resistance test. Blank pcb board testing needs to consider the isolation and continuity of electrical connections at the same time.

In daily life, although electrical testing is more common, resistance testing is not uncommon. Some companies will use a combination of the two, instead of blindly using a single test.

For products with a certain project scale, blank pcb board manufacturers generally use fixed fixtures for testing, called “test racks.” This test uses spring-loaded pins to test every connection surface on the circuit board.

The fixed fixture test is very efficient and can be completed in just a few seconds. But the main disadvantages are high cost and lack of flexibility.