Longhua motherboard shield, the stamping surface of the product is as smooth as jade + 2 days for proofing-4 days for mold out [hardware]

Hello everyone, I am a precision shield manufacturer hardware responsible for the production of Longhua motherboard shields. Today I will bring you some knowledge about shields. Let’s find out! At present, the main board shielding covers on the market generally use stainless steel and cupronickel. The stainless steel has good shielding effect, high strength and moderate price, while the cupronickel shielding effect is slightly worse, softer, and easy to deform. The price is generally about 30% more expensive than stainless steel. Although stainless steel is not as good as cupronickel in terms of tin effect, it can solve the problem of tinning well after galvanizing. Generally, there are two main board shields in mobile phones, covering the RF and BB sections respectively. If it is a baseband circuit, a circuit board shield, like the core is an AMR9 high-speed circuit, or there are some inductive boost components in the baseband, shielding cover, mobile phone shielding cover on the one hand to prevent external electromagnetic radiation from affecting the radio frequency circuit, but also to prevent radio frequency interference Influencing the normal operation of the components in the baseband circuit is like a motherboard shield. In detail, it is to use a shield to surround the interference sources of components, circuits, assemblies, cables or the entire system to prevent the interference electromagnetic field from spreading out; use shielding The body wraps up the receiving circuit, equipment or system to prevent them from being affected by the external electromagnetic field. It can not only be said that the shielding cover is to prevent radiation or be radiated. Choose, choose success