Yueqing Chirx Electron Co.,Ltd

Our company is one of core enterprise in Wenzhou and one of best Chinese capacitor manufacture.

Home > News > Content
Select The Capacitors Need To Know The Basics
- Aug 25, 2016 -

We have introduced many basic knowledge about capacitors, also explained the presumption of knowledge of metallized film capacitors. But this knowledge not only to know and you want to use, and now we have to teach all the basics you need to know to select capacitor for product choices to let everyone have a preliminary understanding.

1. all passive components, capacitors belonging to the type specifications and characteristics of the most complex components. Especially in order to meet the needs of different circuits and the working environment, even the same capacitance and rated voltage values, there are also other different types and selection of material characteristics.

2. a case study of electrolytic capacitors, due to its larger capacity, ceramic and plastic film capacitors or capacitors to separate each other. practical use still has the following characteristics:

A. temperature range: to select type in general or high temperature resistance to + 85 ℃-25 ℃-40 ℃ to + 105 ℃

B. using a height restriction: traditional A/I standard minimum height of 11mm, mini-7mm, Ultra mini 5mm (height equivalent of chip Electrolytic Capacitor).

C. error of capacitance value: high capacity is greater than the rated voltage or 100uF, General +100/-10% or m +/-20%.

D. low leakage flow characteristics: for specific circuits, and time constant accuracy when charging and discharging. (The equivalent of Tantalum tantalum capacitors feature)

E. Low ESR and low impedance characteristics: for some filters, must cooperate with the filtering effect of high frequency pulse current. such as switching power supply filter circuit.

F. Bipolar bipolar characteristics: high frequency pulse circuit must cooperate with high frequency pulse current pathways of effect. for example, promoting the level of deflection coil output circuit.

G. Non-polar-polar features: for low-frequency high-amplitude audio signal path, to avoid the reverse bias voltage of the capacitor, causing the output waveform distortion.

H. above for General A/I electrolytic capacitors, electrolytic capacitors and chips also have a standard, high temperature resistance, low leakage current flows (that is, tantalum chip capacitor), the promise of property, and so on.