Fr4 1.2mm Double Sided Pcb Lead Free Hasl

What is the difference between FR4 and FR5?

 fr4 board, friends who first heard of this professional name may not have any impression of it. In fact, it is a grade number of flame-resistant material, which means a material specification that the resin material must be able to extinguish itself after being burned. It can be seen that the flame resistance of the product is relatively good. If there is an emergency fire or other problems, we don’t have to worry about it causing the spread of the fire. On the contrary, the fr4 board can also effectively suppress the loss of property and personnel. It depends on the material. The colors can be classified, and can also be classified according to the performance characteristics. You can refer to the following to understand the various information and performance of the fr4 board.

　　 One, what is fr4 PCB
FR-4 is glass fiber epoxy copper clad laminate, a kind of substrate in circuit boards. In fact, you should have seen it. For example, the green board inside is made of FR-4 when the small game console is taken apart. circuit board.
　　 FR4 FR5 epoxy board is a laminate product made of special electronic cloth impregnated with epoxy phenolic resin and hot pressed at high temperature and high pressure. It has high mechanical properties and dielectric properties, good insulation properties, heat resistance and moisture resistance, as well as good machinability. Application: Used as insulating structural parts in motors and electrical equipment, and also widely used For PCB testing; and can be used in humid environment conditions and transformer oil.
　　 2. What are the specific differences between FR5 sheet and FR4 sheet?
     FR-4 is the code name of a kind of flame-resistant material grade. It represents a material specification that the resin material must be able to extinguish by itself after burning. It is not a material name, but a material grade. Therefore, the current general circuit There are many types of FR-4 grade materials used in the board, but most of them are composite materials made of so-called Tera-Function epoxy resin, filler (Filler) and glass fiber.
    FR-4 epoxy glass cloth laminate, according to different uses, the industry is generally called: FR-4 Epoxy Glass Cloth, insulating board, epoxy board, epoxy resin board, brominated epoxy resin board, FR-4 , Fiberglass board, fiberglass board, FR-4 reinforcement board, FPC reinforcement board, Rigid-Flex Board reinforcement board, FR-4 epoxy resin board, Flame resistant PCB, FR-4 laminated board, epoxy board , FR-4 light board, FR-4 fiberglass board, epoxy glass cloth board, epoxy glass cloth laminate, circuit board drilling pad.
Main technical features and applications: electrical insulation, stability, good flatness, smooth surface, no pits, thickness tolerance standards, suitable for products with high-performance electronic insulation requirements, such as FPC reinforcement boards, PCB drilling pads , Glass fiber meson, potentiometer carbon film printed glass fiber board, precision star gear (wafer grinding), precision test plate, electrical (electrical) equipment insulation support spacer, insulation backing plate, transformer insulation plate, motor insulation, grinding Gears, electronic switch insulation boards, etc.
　　FR-5 has better advantages over FR-4:
　　1, TG, TD are higher;
　　2, better heat resistance, about twice that of ordinary FR-4;
　　3, Z-CTE is smaller, suitable for high multilayer boards;
　　4, T288 is better.
　　FR4FR5 epoxy board is a laminate product made of special electronic cloth impregnated with epoxy phenolic resin and hot pressed at high temperature and high pressure. It has high mechanical properties and dielectric properties, good insulation properties, heat resistance and moisture resistance, as well as good machinability. Application: Used as insulating structural parts in motors and electrical equipment, and also widely used For PCB testing; and can be used in humid environment conditions and transformer oil.
　　 As a kind of flame-resistant material with good performance, the fr4 board mentioned above is often used in the electronic and electrical industry. It has stable performance and still has good mechanical strength and electrical performance at higher temperatures. In addition, because most fr4 boards are made of imported raw materials and are carefully manufactured through standard processes, they have the advantages of raw materials, ensure the performance of custom circuit board cost manufacturing, and enjoy a good reputation and sales at home and abroad. , This is also the key to the development of fr4 board to the more and more widespread applications.