Printed circuit board (PCB) assembly is at the heart of electronic components and gadgets. Designers typically choose between two primary techniques for mounting components on PCBs: SMT (Surface Mount Technology) and PTH (Plated Through Hole).
An annular ring refers to the area of copper that surrounds the drilled hole (via) in a PCB. In multi-layer PCBs, vias are essential for connecting various layers. The annular ring ensures strong electrical conductivity between these layers, as it provides the necessary copper coverage around the hole.
The introduction of phenolic resin-based laminates in the 1930s improved mechanical stability and insulation. However, the game-changer was the development of glass-reinforced epoxy laminates (FR-4) in 1940, offering superior electrical insulation, moisture resistance, and mechanical durability.
A PCB is a substrate or laminate that supports and connects electronic components to enable various device functionalities. Common substrates include FR4 (flame retardant material), but there are alternatives such as polyimide for flexible designs. PCBs are categorized by layers—single-sided, double-sided, and multi-layer—and by substrate type (rigid, flexible, or rigid-flex combinations)
Surface Mount Technology (SMT) board assembly is a critical and widely used process in modern PCB manufacturing. This process involves placing and soldering electronic components directly onto the surface of PCB pads.
RF PCB refers to a Radio Frequency Printed Circuit Board, operating within a frequency range of 100 MHz to 100 GHz. These specialized PCBs are integral to devices that rely on wireless communication for data transfer.
High-frequency circuit boards refer to special circuit boards with higher electromagnetic frequencies, and are one of the most difficult boards
In modern electronic equipment, high-frequency PCB boards are widely used and are also an indispensable part of many high-frequency devices. Most of them are used in applications with relatively strict requirements for high-frequency PCB boards .
High-frequency PCB circuit boards are circuit boards specially designed for transmitting high-frequency signals. They have special design and manufacturing requirements to ensure good signal transmission performance and the lowest possible signal attenuation in the high-frequency range
High-frequency circuit boards refer to special PCB circuit boards with higher electromagnetic frequencies. They are used in high-frequency (frequency greater than 300MHZ or wavelength less than 1 meter) and microwave (frequency greater than 3GHZ or wavelength less than 0.1 meter) fields. They are produced on microwave substrate copper-clad boards using some processes of ordinary rigid circuit board manufacturing methods or using special processing methods. Generally speaking, high-frequency boards can be defined as circuit boards with frequencies above 1GHz.