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power inductors package seen three kinds of flat, I-shaped, and square closed, these kinds of packaging in the use of what is the difference?

Flat chip inductors are now more popular, because this is the power type, with a lot of. This flat chip inductor has a lot to do with our company. Shape and structure will lead to differences in product electrical characteristics, and the use of the difference is mainly based on the electrical characteristics of the device specifications. Many kinds of inductance, the type of package is not the same. Flat is generally used for high-demand products, flat or square type are mostly power-type inductors. Patch Inductors Package with zip shielded and unshielded! Flat, I-shaped is generally not shielded! Square is closed with a shield!

power inductors manufacturers and the general role of the chip is not the same, the general chip inductors in the circuit is not shielded, used in the circuit inductor can not achieve the desired effect, shielding chip inductor can shield out Some of the circuit in the current instability, a good play a blocking role, shielding the inductance of a complete metal shield will be surrounded by a positive conductor, the inside of the shield will be induced with the same amount of charged conductor negative charge, If the metal shield is grounded, the positive charge will flow into the ground, and there will be no electric field on the outside, that is, the electric field with positive conductor is shielded in the metal shield.

Shielding inductance in the circuit also played a role in coupling, shielding chip inductance In order to reduce the alternating electric field on the sensitive circuit of the coupling interference voltage, the inductance can be between the interference source and sensitive circuit set a good conductive metal shield, and Metal shield ground. The magnitude of the coupling interference voltage of the alternating electric field to the sensitive circuit depends on the product of the alternating electric field voltage, the coupling capacitance and the grounding resistance of the metal shield. As long as the metal shield to try to make a good grounding, can make the alternating electric field on the sensitive circuit coupling interference voltage becomes very small. Electric field shielding to reflect the main, so the thickness of the shield is not too large, and the structural strength as the main consideration.

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