News

Tin spraying is a step and process in the PCB proofing process.

Tin spraying is a step and process in the PCB proofing process. The PCB board is immersed in a molten solder pool, so that all exposed copper surfaces will be covered with solder, and then the excess solder on the board is removed by a hot air cutter. remove. The soldering strength and reliabilit... Read More

PCB CNC

CNC also known as computer routing, CNCCH or NC machine tool is actually HongKong there’s a term, then was introduced into China, the pearl river delta is CNC milling machine, and in other area to be called “CNC machining center” a kind of mechanical processing, is a new process... Read More

Matters needing attention in PCB design

1. The purpose of PCB design should be clear. For important signal lines, the length of wiring and processing ground loops should be very strict. For low-speed and unimportant signal lines, it can be placed on a slightly lower wiring priority. . Important parts include: division of power supply; ... Read More

PCB process edge

The PCB process edge is a long blank board edge set for the track transmission position and placement of imposition Mark points during SMT processing. The width of the process edge is generally about 5-8mm. In the PCB design process, due to some reasons, the distance between the edge of the compo... Read More

Global and China Automotive PCB (Printed Circuit Boards) Market Review

Automotive PCB research: vehicle intelligence and electrification bring about demand for PCBs, and local manufacturers come to the fore. The COVID-19 epidemic in 2020 slashed the global vehicle sales and led to a big shrinkage of the industry scale to USD6,261 million. Yet the gradual epidemic co... Read More

Exposure

Exposure means that under the irradiation of ultraviolet light, the photoinitiator absorbs the light energy and decomposes into free radicals, and the free radicals then initiate the photopolymerization monomer to carry out the polymerization and crosslinking reaction. Exposure is generally carri... Read More

What is the relationship between PCB wiring, through hole and current carrying capacity?

The electrical connection between the components on the PCBA is achieved through copper foil wiring and through-holes on each layer.  The electrical connection between the components on the PCBA is achieved through copper foil wiring and through-holes on each layer.  Due to the different products... Read More

Function introduction of each layer of multi-layer PCB circuit board

Multilayer circuit boards contain many types of working layers, such as: protective layer, silk screen layer, signal layer, internal layer, etc. How much do you know about these layers? The functions of each layer are different, let us Let’s take a look at what the functions of each level h... Read More

Introduction and advantages and disadvantages of ceramic PCB board

1. Why use ceramic circuit boards Ordinary PCB is usually made of copper foil and substrate bonding, and the substrate material is mostly glass fiber (FR-4), phenolic resin (FR-3) and other materials, adhesive is usually phenolic, epoxy, etc.  In the process of PCB processing due to thermal stres... Read More

Infrared + hot air reflow soldering

 In the mid-1990s, there was a trend to transfer to infrared + hot air heating in reflow soldering in Japan. It is heated by 30% infrared rays and 70% hot air as a heat carrier. The infrared hot air reflow oven effectively combines the advantages of infrared reflow and forced convection hot air r... Read More

What is PCBA processing?

PCBA processing is a finished product of PCB bare board after SMT patch, DIP plug-in and PCBA test, quality inspection and assembly process, referred to as PCBA.  The entrusting party delivers the processing project to the professional PCBA processing factory, and then waits for the finished prod... Read More

Etching

PCB board etching process, which uses traditional chemical etching processes to corrode unprotected areas. Kind of like digging a trench, a viable but inefficient method. In the etching process, it is also divided into a positive film process and a negative film process. The positive film process... Read More
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