Identification method of bulk material of Murata chip capacitors

The ** of SMD capacitors is about a few yuan per k, and the expensive ones are more than ten or twenty yuan. The ** of SMD capacitors is affected by many aspects, such as brand, category, specification, market, etc. The key is to learn how to choose.

Major MLCC manufacturers: Kyocera, Murata, Maruwa, TDK; Samsung of South Korea; Taiwan Darfon, Pingshang Electronic Technology, Heshentang, Yageo, Huaxinke; The famous ones in the mainland are Yuyang, Fenghua Hi-Tech, and Sanhuan. There are many factors that need to be considered when selecting the capacitance, and the following is the capacitance selection elements of MLCC.

Selection factors, - parameters: capacitance value, tolerance, withstand voltage, operating temperature, size. -Material,-DC bias effect,Dielectric performance,-C0G capacitors have high temperature compensation characteristics, suitable for bypass capacitors and coupling capacitors.

The X7R capacitor is a temperature-stabilized ceramic capacitor suitable for...

According to Learn More Murata is producing high-end SMD capacitors for the world to be smarter and smarter. The purpose of collecting these bulk materials "MBS1689" is to test whether the function can reach a high value value and other reasons 1: porcelain dielectric capacitance (CT), cheap, small capacity, mainly used in low-frequency circuits.

2: Polyester capacitor (CL), the characteristics and uses are the same as above. 3：

Multilayer capacitors (CC) are very expensive, small in capacitance, and stable in nature. It is generally used in high-frequency circuits. 4：

Electrolytic capacitance (CD) has a large capacitance and is divided into positive and negative electrodes. It is mainly used for power supply circuits, pulsating circuits. 5：

Mica capacitance (CY), withstand voltage (250V-450V), small capacity, very expensive, large volume. It is used in the important parts of the communication machine. There are also tantalum capacitors (Ca), niobium capacitors (CN), film capacitors, and so on.

Murata SMD capacitor bulk material 0805 0603 Good product division Murata 0805 0603 This is a total specification And I am a professional collector of these bulk material raw materials "MBS1689" Murata Yageo too tempting tdk These brands are all factory throwing materials with these volumes, and there needs to be a special machine to distinguish between good products, and I just have these machines 1. Capacitance measurement Turn the multimeter to the buzzer diode file, put the meter pen on the two pins, and you should see that the value is breaking and becoming larger, When infinity is reached, the two tables are reversed, and the value should quickly change from negative to infinity. This process is the charging and discharging process of the capacitor. 2. Judgment of good or bad After the electrolytic capacitor is damaged, the appearance is bulging, leakage, deformation, etc.

If there is no discharge process or the discharge process is very short, and the jump change is relatively slow or even cannot jump to infinity, it indicates that the capacitance is leaking or the performance is poor; If the multimeter reading is consistently zero, it indicates a short circuit in the capacitor. For chip capacitors, it is difficult to judge whether they are good or bad when measuring on the motherboard, so they can only be taken off and measured, and the two stations of the capacitor should be infinity when measuring. The leakage chip capacitor will be slightly darker than the surrounding capacitor; Bad capacitance will cause the computer to enter the system blue screen, crash, crash when running large programs, and leakage will cause the computer to restart.

6. The substitution principle of capacitance 1. The positive and negative poles cannot be reversed. 2. The withstand voltage value should be greater than or equal to the original value. 3. The capacity can be + -20% different from the original value.

4. The chip capacitor can be replaced as long as the color and size are the same. 5. The frequency stabilization capacitors on the two pins of the crystal oscillator should be replaced by the original value (original position) (the capacitor at the same position on another motherboard can be replaced). This is my casual ** article, there are too many such things on the Internet.

Samsung. Yageo Sun Yuden, Murata, SMD capacitor receiving capacitor mixed bulk material package, capacitor original package bulk material and bulk material can talk about capacitance (1 5 3) bulk material (0 2 7) original package (1 8 5 5 0) total material.

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