Knowledge

Introduction to the production steps and requirements of the PCBA test fixture

PCBA test fixture is a device for testing PCBA finished products. When making PCBAtest fixtures, PCBA processing factories usually need to provide Gerber files and PCBA samples to

What is a characteristic impedance pcb board

Characteristic impedance refers to the resistance of the high-frequency signal or electromagnetic wave in the propagation process of the transmission signal line relative to a cert

How to realize the soldering requirements of PCB and FPC gold fingers

FPC is a flexible printed circuit board (Flexible Printed Circuit Board, referred to as FPC), which is a circuit board made of PI (polyimide) film as the base material and laminate

What problems should be paid attention to in manual soldering of PCB aluminum...

In the production process of PCB aluminum substrate, in order to ensure its better application effect, manual soldering of tin wire is usually used afterwards. So, what problems sh

What is the production process of half-hole PCB board

Metal half hole (slot) means that one drill hole is holed and then the second drill and shape process are performed, and finally half of the metallized hole (slot) is retained, tha

How to do PCB four-layer board conventional laminated structure and design so...

With the increasingly complex and high-speed circuit design, how to ensure the integrity of various signals (especially high-speed signals), that is, to ensure the signal quality,

What are the PCB dry films

Dry film is a polymer material that can block the functions of electroplating and etching. The reaction principle is that after the polymerization reaction is carried out by ultrav

Why is it so difficult to make multi-layer PCB boards

With the development of electronic information technology, more and more fields use multi-layer PCB boards. Traditionally, we define PCB boards with more than 4 layers as "mul

What is gold plating on the surface of PCB

1.Surface treatment of PCB board: anti-oxidation, tin spray, lead-free spray tin, immersion gold, immersion tin, immersion silver, hard gold plating, full board gold plating, gold

Why FPC is suitable for high frequency applications

The demand for printed circuit boards (PCBs) is increasing with the development of technology, and the increase in broadband demand and the miniaturization of equipment has acceler

How to make pcb resin plugging

Pcb resin plugging is a widely used and favored process in recent years, especially for high-precision multilayer boards and products with larger thicknesses. Some problems that ca

What are the characteristics of multi-layer circuit boards

Multilayer circuit boards are made by laminating and bonding several etched single-sided or double-sided boards. Then, compared with single-layer and double-layer circuit boards, w