Shields screen EMI onboard

A new line of PC board shields allows electronic components to be shielded from the unwanted effects of EMI on the PCBs themselves.

A new line of PC board shields from electromagnetic interference (EMI) shielding specialist Laird Technologies allows electronic components to be shielded from the unwanted effects of EMI on the PCBs themselves.

These PC board shields feature solid tops, scored to allow peel off when access to board level components within the can is required.

This innovative peel-off feature prevents damage to the board and components by eliminating the need for labour intensive de-soldering.

Peeling off the lid is simply achieved by using a small starter hole for simple removal, the hand operation requiring only minimal force using a simple hook driver or tweezers.

The scored feature can be retrofitted so that it can be incorporated into existing designs of board level shielding.

This eliminates the need for costly miniature fence and lid designs necessary when occasional access to components is required.

The feature is an advance in board level shielding design, and it requires no changes in assembly techniques or normal SMT procedures.

Overall, the advantages of using Laird Technologies' PC board shields can be summarised as: easy removal of the scored lid area; a simple replacement technique for the lids; there is no adverse effect on shielding effectiveness; and the shields can be used on either surface mount or through hole applications.

Moreover, the shields require no special tools or equipment, and only a very low force is required for lid removal.

Laird Technologies' PC board shields retain all physical properties after PSMCIA/JEIDA testing for shock, bending, torque, drop, and vibration, and meet EIA and JEDEC specifications.

Custom sized configurations are available, and these versatile shields can be packed in tape and reel for SMT and pick and place applications, so that overall, the range of applications is wide.

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