What is SMT
date：2019-12-16 18:00:49
In the whole process of SMT chip processing of electronic device products, there are many factors that will harm the product quality. For example, SMT chip processing machinery and equipment, processing technology, PCB technology and PCB design schemes that people often understand, etc. Selection is also very harmful to product quality
In the whole process of SMT chip processing of electronic device products, there are many factors that will harm the product quality. For example, SMT chip processing machinery and equipment, processing technology, PCB technology and PCB design schemes that people often understand, etc. Selection is also very harmful to product quality. Selecting suitable raw materials for the base steel plate can reasonably improve product characteristics and ensure product quality. So what are the SMT raw materials in SMT chip processing?
There are several major types of chip raw materials in SMTSMT chip processing. One is to use metal material-based chip type to mean organic chemical type chip raw materials; the other is to use ceramic chip type and ceramic shaft coated copper chip. The formula is an inorganic type patch raw material.
1. Metal material patch type: 0.3mm-2.Omm thick metal sheet is used, such as aluminum alloy plate, thick steel plate, copper coin and epoxy resin semi-dry solid sheet, and copper compound. The metal sheet can maintain large-scale SMT processing, and has the following characteristics:
(1) Good physical properties: Metal-based chip mount has high impact toughness and ductility, is better than rigid raw material mount, can be used for large-scale SMT chip processing, and can undertake overloaded electronic device installation. In addition, the metal-based patch type also has high specification reliability and flatness.
(2) The heat pipe has good heat dissipation characteristics: because the metal material patch type immediately touches the semi-dry solid sheet, it has high quality heat pipe heat dissipation characteristics. The SMT patch processing is carried out with a metal material patch type. The metal material patch type can have a heat pipe heat dissipation effect during production and processing. The heat pipe heat dissipation work ability lies in the thickness and thickness of the metal material patch type and the thickness of the resin layer. Naturally, in addition to fully considering the heat dissipation characteristics of the heat pipe, the characteristics of electrical equipment, such as electrical and compressive strength, should also be fully considered.
(3) Shielding electromagnetic induction: In high-frequency electronic circuits, avoiding radiation sources of electromagnetic induction has always been the concern of interior designers. The use of metal-based patch can be used as a shielding board with shielding The effect of electromagnetic induction.
2. Structural ceramics for electronic devices: Porcelain for electronic devices is one of the basic raw materials of microelectronic devices, which has the following advantages:
(1) New packaging materials for large-scale integrated circuit chips and new-performance insulating ceramics for high-frequency insulating layers;
(2) It can replace imported new microwave heating porcelain and electrode capacitor porcelain and ferroelectric porcelain for ceramic capacitors;
(3) Ceramic raw materials and handicrafts for electronic devices for large-scale integrated circuit chips, which are dedicated to chip components.
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