3M 1345 0.5"SQ-250

Series:	1345
Part Status:	Active
Type:	Shielding Sheet
Shape:	Square
Length:	0.500" (12.70mm)
Width:	0.500" (12.70mm)
Thickness - Overall:	0.004" (0.10mm)
Operating Temperature:	-40°C ~ 130°C
Adhesive:	Non-Conductive, Single Sided
Material:	Embossed Tin-Plated Copper Foil

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The 3M 1345 0.5 inch SQ-250 is a shielding and absorbing material commonly used for Radio-Frequency Interference (RFI) and Electromagnetic Interference (EMI) reduction. The 3M 1345 material has been specifically designed for a wide variety of applications, such as computer housing and electronic circuit assemblies, providing high effectiveness, excellent reliability, and superior durability.When considering the use of 3M1345 0.5 inch SQ-250 for shielding and absorbing material, the material design must be taken into account in order to ensure that the RFI and EMI reduction is able to reliably meet the desired application requirements. The 3M 1345 material is a combination of a metal foil/screen layer and a highly voluminous foam absorber layer. The foam absorber layer can be varied with regard to porosity, and it includes a special coating that prevents the intrusion of moisture and dust into the foam.The metal foil is made of copper- or aluminum-clad polyester, and it is printed with conductive ink. The printed layer is separated from the metal layer, which improves the electrical performance of the material. The specially formulated conductive foam consists of a matrix of aliphatic polyols, and it is further modified with materials that are formulated to absorb high frequencies. The foam absorber is also supplemented with a special layer that provides additional EMI and RFI absorption.The 3M 1345 material is designed to provide optimal levels of EMI and RFI reduction in a wide variety of applications. It is proven to be an effective solution for applications such as computers, automotive, mobile phone handset, wireless-enabled consumer electronics, and military uses. Since it consists of a two-layer composite, it offers excellent RFI and EMI attenuation properties.The material’s mechanical strength and compression resistance provide excellent long-term performance in a variety of environments. The overall EMI and RFI reduction is mainly a function of the mechanical properties and the geometry of the shielding and absorbing material. Furthermore, the material has been designed for installation into any electrical or electronic enclosure, allowing for straightforward integration into existing systems.3M 1345 0.5 inch SQ-250 shielding and absorbing material is suitable for many applications where EMI and RFI reduction are essential, such as in military, aerospace, connected cars, consumer electronics and networked computing systems. The two-layer design of the material helps to provide maximum shielding and absorption without compromising the performance of the product. In addition, this material is thermally stable, which means that it will maintain its electrical, mechanical, and thermal characteristics for a long period of time.The material is easy to install, and its design ensures that any noise created by electronic components and circuits can be greatly reduced. This makes the material ideal for applications where cost-effectiveness and reliability are critical. The 3M 1345 0.5 inch SQ-250 material is also designed to provide a high level of RFI and EMI attenuation performance. Finally, the two-layer construction of the material ensures that the RFI and EMI absorbers are not affected by the environment.

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