Electronic component

Description of storage requirements and precautions for electronic components

The life of electronic components with different quality is different, and the life depends on how to use them. If properly applied, the life of electronic components is about 5-10 years. Resistance, inductance, capacitance, semiconductor devices (including diodes, triodes, field transistors, integrated circuits), that is, under the same working conditions, semiconductor devices are most likely to be damaged. According to the statistical reports of device physical failure data from several companies, among the device failure cases induced by various stresses (electrical, mechanical, environmental, moisture sensitive, etc.), the failure of electronic components due to moisture accounts for 15%. With the development of device packaging technology, more and more plastic materials with low water vapor permeability are used in large quantities, and the number of pins is becoming more and more intensive. The control technology of humidity sensitive devices is facing great challenges. Device design requires high integration, and production and processing require higher efficiency, making most of the current devices are surface mount packaging.

Application of PPS in Electronic Components

With the rapid development of microelectronic integration technology and assembly technology, the assembly density has rapidly increased, the volume of electronic components and logic circuits has shrunk thousands of times, electronic instruments have become thinner and smaller, while the operating frequency has increased dramatically, and the semiconductor thermal environment has rapidly changed towards high temperature. At this time, the heat generated by electronic equipment rapidly accumulates and increases, and the electronic components can still work normally with high reliability under the operating ambient temperature. The timely heat dissipation capability has become an important limiting factor affecting their service life.

What is the use of CRM system for electronic components?

It is estimated by the Ministry of Industry and Information Technology that by 2023, China's total sales of electronic components will reach 2.1 trillion yuan. With the influx of capital, in this trillion level track, the market competition has become more intense. At the same time, the digital development of the industry has become a general trend.

iSuppli: International component market price tracking

Usually, when we see that the demand for electronic components is slowing down, the concern for the global economy, on the contrary, will affect the consumer confidence this year.

The low-key style of wire technology cannot block the market trend of passive components

Coilcraft, a US funded professional manufacturer of wire wound inductors, also appeared at the 11th International Integrated Circuit Exhibition (IIC China) to show its chip capacitors, power inductors, network transformers and other products used in communication equipment, mobile phones and digital network products.

Small inductors become the mainstream of the market

With the development of miniaturization of electronic products, the volume of inductor has been reduced to the physical limit. In view of this, the president and CEO of EPCOS Greater China, Michael Pocsatko, believes that the development direction of inductors in the future is integration. Inductors will be combined with other discrete devices into complex modules to provide customers with a complete system that is easy to use. However, as far as the present situation is concerned, it is still a long way to realize the integration of miniaturized discrete devices.

Classification of magnetic materials

Magnetic materials have strong magnetic materials with magnetic order, and generally include weak magnetic and antiferromagnetic materials that can apply their magnetism and magnetic effects. Magnetism is a basic property of matter. Materials can be divided into diamagnetic, paramagnetic, ferromagnetic, antiferromagnetic and ferrimagnetic materials according to their internal structure and properties in the external magnetic field. Ferromagnetic and ferrimagnetic substances are strong magnetic substances, and diamagnetic and paramagnetic substances are weak magnetic substances. Magnetic materials can be divided into metal and nonmetal according to their properties. The former mainly includes electrical steel, nickel base alloy and rare earth alloy, while the latter mainly includes ferrite materials. According to the use, it can be divided into soft magnetic materials, permanent magnetic materials and functional magnetic materials. Functional magnetic materials mainly include magnetostrictive materials, magnetic recording materials, magnetoresistance materials, magnetic bubble materials, magneto-optical materials, gyromagnetic materials and magnetic film materials. The basic magnetic properties of magnetic materials are reflected by magnetization curves, hysteresis loops and magnetic losses.

Function of chip inductor

SMD inductor is an electromagnetic induction component wound with insulated wires. It is a commonly used inductive element. Function of SMD inductor: Connect DC resistance to AC This is a simple statement. It isolates and filters AC signals or forms a resonant circuit with capacitors and resistors Function of tuning and frequency selecting inductor: The LC tuning circuit can be formed by the parallel connection of inductance coil and capacitor. Any current of the chip inductor in the circuit will generate a magnetic field, and the magnetic flux of the magnetic field will act on the circuit.

What's wrong with chip inductance heating?

We still need to be calm about the chip inductance heating. Don't panic when you hear "heating"! Anyone who has a little junior high school physics foundation should know the law of conservation of energy! When the electric energy passes through the chip inductor, part of it is converted into heat energy, and the chip inductor must generate heat. But there is a limit to this "heat", commonly known as "temperature rise" in the industry. As long as the temperature is within 45 ° C, there is no problem, and there is no need to worry about affecting the performance of the chip inductor; If the temperature rise exceeds 45 degrees, the chip inductance may really have a problem.

What are the functions and advantages of chip inductor?

The chip inductor mainly has the functions of filtering, oscillation, frequency division, energy storage and boost in the circuit. Different inductors have different working principles in the circuit. An inductor connected in series with the load in the bridge rectifier circuit constitutes a lazy inductor filter circuit. A C-type filter circuit can be formed by connecting a capacitor behind the inductor filter circuit. In the inductor filter circuit, for the DC component, the inductance of the inductor is very low, so a large number of inductors are in a short circuit state. The voltage drops mostly on the load. For the harmonic component, the higher the frequency, the greater the inductance of the inductor.