Capacitors, inductors, resistors and other components on the PCB, with the advancement of technology, process development and other requirements, the space requirements of components on the circuit board are getting smaller and smaller, and the efficiency is higher, so SMT chip components have appeared. Machine patch machines are very efficient and have fewer and fewer problems. What are the SMT chip components?
In the SMT chip processing production process, we will be exposed to a variety of materials, the most common is SMT components, SMT components are also known as SMC components, including surface mount resistors, capacitors and inductors.
Surface mount resistors, whose resistance is generally printed on the surface of the component, usually three or four digits. When the surface is printed with three digits, the first two digits are valid digits, the third digit is zero after the significant digit, and the main parameters are four, which are capacitance, size, error, and coefficient. The value of the capacitance varies with the medium and is usually represented by three digits. For aluminum electrolytic capacitors, the darker pole is called the negative pole. For ceramic capacitors, the capacitance is not printed on the surface of the component, and the components of the same color and size have different capacitance values.
Surface mount inductors, also known as magnetic beads, have similar surface and surface mount capacitances, but are darker in color and can be sized with a detector and measured for inductance. Surface mount inductors are divided into wirewound and non-wirewound. The main parameters are size, error, inductance and so on.
Surface mount diodes, commonly available in glass diodes and plastic diodes. Diodes are widely used in life, such as light-emitting diodes used in mobile phones. Diodes of different materials can emit light of different colors. When different voltages are applied within the range of pressures that they can withstand, light of different brightness is emitted.