What is the definition of a shielding mask? How is it constructed?
2022-05-13
Shielding Cover Composed of support legs and a cover, the support legs are movably connected to the cover; the cover is hemispherical, and some edges of the shielding cover have positioning feet that lock into the corresponding positions on the main board. Structurally, shielding covers can be divided into one-piece and two-piece frames: currently, one-piece frames are commonly used due to their simplicity and high cost-effectiveness; two-piece frames are more expensive (one shielding frame plus another shielding frame, clipped onto the shielding frame), but they facilitate later maintenance of the internal chips and electronic components. Maintenance personnel only need to gently remove the shielding frame from the shielding frame, and after completing the operation, reattach the shielding frame to repair or replace the chips and electronic components on the main board through the shielding frame.
Both cell phone shielding and GPS shielding are frame-type, with the frame using a copper-nickel-zinc alloy and the cover using stainless steel. The shielding effect of the shielding cover directly affects the entire functionality of the cell phone, so the choice of material for the cell phone shielding cover is crucial. Commonly used in the industry are 0.2mm thick copper-nickel-zinc alloy and stainless steel (GPS shielding generally uses copper-nickel-zinc alloy). Among many materials, copper-nickel-zinc alloy offers excellent shielding performance. It is a metallic shielding material that is easy to tin-plate. Copper-nickel-zinc alloy is also easy to weld, dissipates heat well, and resists steam.
Shielding Cover Principle: The shielding body is used to enclose the interference source of components, circuits, assemblies, cables, or the entire system to prevent the interference electromagnetic field from spreading outwards; the receiving circuit, equipment, or system is enclosed with a shielding cover to prevent them from being affected by external electromagnetic fields.
Cell Phone Metal Shielding Cover The planarity of the cell phone and GPS shielding covers is strictly controlled within a tolerance of 0.05mm to ensure its easy tin-plating performance and excellent shielding effect.
Recommended News
Contact Us
Online Message
* Note: Please fill in the information accurately and keep the communication open. We will contact you as soon as possible.