What structural engineers should know about shielding covers | || Published by: China Mobile R&D Network Release date: 2005-7-12 || || || \"Yuanhang\" shares with everyone || 1. This component is mainly used to prevent electromagnetic interference (EMI) and shield the components and LCM on the PCB. || 2. It is divided into fixed type (directly soldered to the PCB with SMT) and detachable type (combined with structure and LCM or directly buckled with the protrusions on the shielding_cover on the shielding_frame). || 3. Mainly * solder joints or buckles for positioning. || 4. Design guidance: || A Shielding_frame has a flatness of 0.13mm, sufficient strength, thickness of 0.3mm, || height of 2mm, 0.75mm from the edge of the PCB board, and the inner edge of the frame is at least 0.8mm away from the outer frame. || B The thickness of the shieling_cover is 0.2mm; sometimes, for the heat dissipation and cooling of components, || small round holes can be added on the cover, with a diameter of ¢1.0~¢1.5mm. Too large a hole will result in poor shielding effect. ……
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