Circuit is composed of wire and electronic components, different line requirements of SMD inductance parameters are not the same, SMD inductance of the main parameters have inductance, allowable deviation, distributed capacitance, rated current and quality factors.
The following inductance factory tells you the meaning of a parameter:
1. The inductance
The amount of inductance, mainly depends on the number of turns (turns) of the inductance coil, winding method, whether there is a core and core material.In general, the more winding, the denser the coil, the greater the inductance.A coil with a core has more inductance than one without.The higher the core permeability, the greater the inductance.So the amount of inductance is a number of factors that determine its size.The basic unit of inductance is Henry, denoted by the letter H.Other commonly used units are the milliheng (mH) and the micheng (muh).Mh 1 = 1000 mu H
2. Allow deviation
The allowable error between the labeled sensitivity and the actual sensitivity.Generally used in oscillating or filtering lines, SMT inductance requires high precision, and the allowable deviation is ±0.2%~±0.5%.However, the accuracy required for coupling or high frequency choke is not high, and the allowable deviation is ±10%~15%.
3. Distributed capacitance
Capacitance between turns of the coil and between the coil and the core.The smaller the distributed capacitance, the better its stability.
4. Rated current
Maximum current allowed when SMT inductor is working normally.If the working current exceeds the rated current, it will burn out.
5. Quality factor
Also known as Q value or excellent value, is the main parameter to measure the quality of the inductor.It refers to the ratio of inductance of SMD inductance to its equivalent loss resistance when working at an ac voltage of a certain frequency.The higher the Q value, the smaller the loss and the higher the efficiency.
Getwell Electronics (Huizhou) Co., Ltd. is a sino-foreign joint venture enterprises, was founded in 2004. We are introducing us as one of the best professional inductor manufacturer in China, which specialized in manufacturing inductor kit, SMD inductor, Toroid Coil, Radial Lead Inductor and High Frequency Transformer. Our products are widely apply to consumer power, lighting, communications, instrumentation, medical, security and new energy, photovoltaic charging pile, automotive electronics and other fields.
Post time: Nov-07-2019