BT thermoelectric separation copper substrate

Thank you for choosing Longshun Electronics, we adhere to the quality first, reputation first business policy. Service and meet customer needs.

BT thermoelectric separation copper substrate

Thank you for choosing Longshun Electronics, we adhere to the quality first, reputation first business policy. Service and meet customer needs.

Qualifications

Qualifications

Qualifications

Qualifications

Steel plate cleaning production line

Etching production line

Etching production line

Pretreatment production line

The history of circuit boards: from simple circuit connections to key components of the complex electronic world

Circuit boards are an indispensable and key component of modern electronic equipment. They have gone through a long and arduous development process

Printed Circuit Board (PCB) is a substrate used to connect and support electronic components and is widely used in electronic products. The following is some information about the circuit board industry

Printed Circuit Board (PCB) is a substrate used to connect and support electronic components and is widely used in electronic products

The packaging substrate industry is ushering in new development trends

In recent years, with the rapid development of the global logistics industry and the continuous optimization of the supply chain, packaging carrier boards, as an important loading tool in the logistics industry, are gradually becoming the focus of attention. The innovative design and technological application of packaging carrier boards are leading the development of the industry, providing more efficient and safer solutions for logistics and transportation.

The latest development trends of the circuit board industry in 2023

In 2023, the circuit board industry will usher in a series of exciting new developments that will drive innovation and progress in the industry. The following is the latest industry news about the circuit board industry in 2023:

What special process holes are there in PCB manufacturing?

Countersunk hole -- The transition part of the hole wall at the outermost/maximum aperture and the hole wall at the most small hole is parallel to the pcb surface, and the part connecting the large hole is a plane, not an inclined plane. The connecting part of the big hole is an inclined plane, not a plane. Note the angular (0-180 degree) control

Three major factors causing welding defects of circuit board

Poor weldability of circuit board holes will produce virtual welding defects, affect the parameters of components in the circuit, lead to the instability of multilayer components and inner wire conduction, and cause the functional failure of the entire circuit. The so-called welderability is the property of the metal surface being wetted by molten solder, that is, the metal surface where the solder forms a layer of relatively uniform continuous smooth adhesion film.

What is PCB resin plug hole? Why use resin plug hole?

PCB uses resin plug holes. This process is usually due to BGA parts, because traditional BGA may make VIA to the back between PAD and PAD for wiring, but if BGA is too dense and the VIA cannot go out, it can be drilled directly from PAD to make via to other layers for wiring, and then the hole is filled with resin and copper plated to become PAD. That is, the commonly known VIP process (via in pad), if it is only done on the PAD via without resin plug hole, it is easy to cause tin leakage leading to short circuit on the back and front air welding.

What is a blind hole? What is buried hole?

Blind Via Hole: The outermost circuit of the PCB is connected with the adjacent inner layer by electroplating holes. It is called "blind through" because it cannot see the opposite side. In order to increase the space utilization of PCB circuit layer, the "blind hole" process emerges as The Times require. This production method needs to pay special attention to the depth of the drilling hole (Z axis) to be just right, but this method often causes difficulties in the hole electroplating so almost no manufacturers use; You can also drill a good hole in advance when you need to connect the circuit layer in the individual circuit layer, and then finally stick together, but you need more precise positioning and alignment device.

What is a rigid plate? What problems should we pay attention to when making this kind of board?

Just torsion plate, is we often say the combination of soft and hard plate. The soft and hard combined board has the characteristics of FPC and PCB at the same time, so it can be used in some products with special requirements, both flexible and rigid areas, to save the internal space of the product, reduce the volume of finished products, improve the product performance is of great help. The production process is various, the production is difficult, the rate of good products is low, the material, manpower is more, therefore, the price is more expensive, the production cycle is longer.

What special process holes are there in PCB manufacturing?

Countersunk hole -- The transition part of the hole wall at the outermost/maximum aperture and the hole wall at the most small hole is parallel to the pcb surface, and the part connecting the large hole is a plane, not an inclined plane. The connecting part of the big hole is an inclined plane, not a plane. Note the angular (0-180 degree) control