Board Level Shields
In addition to a shielding of the electronic housing it may be useful or even necessary to shield the interference source directly on the Printed Circuit Board (PCB). This is often required
Optionally the user can choose between the following delivery forms:
- one-piece shields
- two-piece shields (frame and cover)
- SMD-compatible shielding clips and separate covers
One-piece shields are a metallic shielding consisting of five sides. The sixth side is determined by the connection to the electric grounding path on the PCB.
Two-piece shields are divided into the so-called fence (frame) and the cover. The advantage of this is that the cover can be belatedly fitted (e. g. after the alignment of a component).
These shielding housings are mounted on the PCB using either THT or SMD technology.
Besides standard Board Level Shields MTC can also supply EMC shielding housings which are specially designed to your specifications. Whether they are for prototypes or for mass production, in small or large quantities, shielding covers are a low cost way of providing a direct shield for your printed circuit board to prevent EMC radiation.
SMD-compatible shielding clips offer the advantage that they can be installed individually on the PCB and thus establish a "fitting" for the shielding cover. Depending on the size of the area to shield the usage of one or more clips per side is recommended.
Shielding clips are made of tin plated steel and are supplied on belt.
Typical applications of Board Level Shields
Board Level Shields have a high shielding effectiveness and are used for example in the measurement technique for the construction of test equipment, in NF technology or in the construction of senders and receivers. They are useful to shield