In SMT chip processing, customers generally care about the processing quality, and the processing quality of SMT chip is the top priority. But for SMT foundries, the choice of electronic components is also one of the key factors affecting product quality. Electronic processing is inseparable from electronic components, and the choice of components is also one of the core issues. We should not only ensure the product quality, but also control the cost within the budget, so as to achieve the balance between quality and cost.


1.SMD resistance
Resistor is an electronic component with resistance characteristics, which is widely used in SMT chip processing. Resistors are divided into fixed resistors and variable resistors (potentiometers), which play the role of voltage equalization, shunt and current limiting in the circuit.


2.SMD capacitor
Capacitor is also one of the basic components of SMT processing. It is a storage component of electric energy. It plays the role of coupling, filtering, DC and tuning in electronic circuits.


3.Inductor
Also known as inductance, it can store magnetic energy. Inductance coil in SMT processing usually consists of frame, winding, shield and iron core. In the process of SMT chip processing, it is necessary to continuously adjust the resistance within the specified range, which is called potentiometer. The potentiometer consists of a housing, a sliding end, a rotating shaft, a ring resistor and three lead ends.


4.Transformer
Generally speaking, a transformer consists of an iron core and a coil. The coil has two or more windings, of which the winding connected to the power supply is called the primary coil and the rest is called the secondary coil. When there is AC current in the primary coil, AC magnetic flux will be generated in the magnetic core, thus inducing voltage in the secondary coil. Transformers are mainly used for AC voltage conversion, current conversion, power conversion, impedance conversion and buffer isolation.


5.Crystal diode
It is composed of diode PN junction, electrode lead and additional sealed shell, and has unilateral conductivity.


6.Field effect transistor
This diode is also a PN junction semiconductor device. Unlike transistors, in SMT chips, it uses the insulation characteristics of PN junction instead of its conductivity.