Usually have to use wireless communication products, usually in the circuit board design shielding box (shieldingframe) to isolate electromagnetic interference (EMI), but for shielding box function, generally need to use two parts, one is to use SMT parts of shielding box (shieldingframe), the other is a shield (Shieldingcan), so it is necessary to open two sets of the above Press mold.
Whatever the cost of the mould, as far as I'm using the experience of the shielding box, it must pass several ways to shape sheet metal processing, and the general shielding box were asked to SMT machine can play, so its Flatness (Flatness) requirements are generally required to achieve 0.10 mm below, because most of the steel plate thickness are opened in 0.12 mm, assume that using stepwise plate (step - upstencil), the thickness of the steel plate is at best a 0.15 mm, so the low yield, heavy industry under the condition of high demand, make the shielding box has been high fees. And most of the SMT dozen pieces have also prepared the take-up (tape - on - biennial reel), it is also a fee.
Now manufacturers have come up with some brains to move fast to use clip (clip) to replace the shielding box method, the clip can not only use SMT dozen pieces, small volume and so afraid of deformation, in fact, earlier tubular fuse (fuse) is the design of similar products.
This clip can directly replace the shielding box, when the clip is welded on the circuit board, then the shield is installed on the clamp directly to the middle clamp, less equal to the cost of a shielding box. We may compare the shielding box (Shieldingframe) and blocking a clip (shieldingclip) between the advantages and disadvantages of the following:
The vast majority of PCB manufacturers did not know the secret
