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Recommended products for noise countermeasures (EMC countermeasures)

WE-SMGS : Solderable Gasket Shield

Features:

This is a gasket-type shielding material that can be surface mounted. It simplifies tasks such as connecting the PCB to the housing and inserting the gasket, which previously had to be done manually. PCB reflow is possible.

Key specifications:

・Size: L:4 x W:3 x H:2.5 ~ L:10 x W10 x L15

・Surface resistance: 0.1Ω/sq

・Shield effect: Attenuation 70dB @100MHz

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WE-MPSB:高ピーク電流対応フェライトビーズ

Features:

These chip beads are compatible with large currents. By reducing DC resistance and molding them with special materials, they achieve a maximum rated current of 10A despite being chip bead inductors. They are effective as a replacement for bead ferrite inductors, which can burn out due to inrush currents. In addition, their low DC resistance reduces unnecessary loss in circuits. As shown in the figure below, data such as "pulse time vs. maximum pulse current" and "maximum current vs. number of pulses" is also clearly displayed, allowing for safe designs against peak currents that occur under various conditions.

Key specifications:

・Size: 0603 (1608mm) to 3312 (8530mm)

・DC resistance value: Minimum 1mΩ

・Rated current: Max. 10.5A

・Impedance: 600Ω@100MHz (@100MHz maximum value)

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WE-CMBNC:ナノクリスタルを用いたパワーライン用コモンモードチョークコイル

Features:

Compared to common mode choke coils that use conventional ferrite cores such as "NiZn" and "MnZn", this product is characterized by "small size", "light weight" and "low loss". From the comparison table below, it can be seen that the magnetic permeability μ is a large value compared to other materials. Since the magnetic permeability is high, inductance can be obtained with a small number of turns, and Rdc is also small, resulting in low loss. In terms of temperature characteristics, one of the features is that a stable inductance value can be maintained in a high-temperature environment. It can be realized with about 50% miniaturization in volume ratio and Rdc less than half.

 

Main Specifications:

・Size: XS ~ XXL 5 types

・Frequency: Can be used in a wide range of frequencies from low frequencies to several 100MHz

・Rated current: Maximum 38A

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WE-EMIP: EMI patch

Features:

This EMI sheet has thermal conductivity and is effective for heat dissipation from high-speed CPUs and EMI prevention. Made of a hybrid material consisting of an absorber and a metal layer, it is effective against both magnetic and electric fields. WE-EMIP's highly flexible material makes it ideal for EMC noise suppression, magnetic decoupling, and electrostatic discharge prevention over a wide frequency range from 100Hz to 25GHz.

Key specifications:

- Wide frequency range from 100Hz to 25GHz

Ultra-thin: 0.072 mm

・Using temperature: -25℃ ~ +105℃

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WCAP-CSST:ソフトターミネーション積層セラミックコンデンサー

Features:

This is a multilayer ceramic capacitor (MLCC) with enhanced vibration and shock resistance. By providing layers that function as absorbents on the electrodes at both ends, it has a structure that is more resistant to vibration and shock than conventional MLCCs. It is ideal for circuits mounted on handheld devices, etc.

Key specifications:

・Size: 0603 (1608 mm) to 1210 (3225 mm)

・Capacity: Various

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REDEXPERT:充実したサポートツール

Features:

An online tool for searching coils, ferrites, capacitors and more. Simply enter your criteria and search to instantly see products that meet your criteria. It is a useful tool for selecting the most suitable parts, such as comparing the characteristics of multiple candidate parts with waveforms on the same screen, and checking data sheets for more detailed information. Simulations such as inductor loss calculation, heat generation, saturation current, DC superimposition characteristics, and impedance detection of coils and ferrites can be used simply by accessing the REDEXPERT site on the browser.

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Related technical articles

Radiation noise countermeasures using shield materials (EMC countermeasures)

If you are interested in a detailed article on shielding materials, please click the image above.

 

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If you want to buy a product in a hurry, you can consider Macnica-Mouser.

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