Aluminium honeycomb fan shield with threaded holes

A range of low-cost EMC vents for use with standard fan size fans. The Honeycomb fan shield 9530 series are designed to provide EMI shielding and maximum airflow without degrading the fan output. These vents provide a low-cost option to perforated metal when airflow rates are critical. A aluminium frame is fitted with one layer of 6.35 or 12.7 thick honeycomb material and an optional conductive foam gasket (5770-3-02-S) to connect the honeycomb to the metalwork. When mounting the conductive foam gasket, the foam side must be against the honeycomb and the mesh against the metalwork side. Honeycomb Fan Shield in almost all sizes corresponding to industry-standard fans with standard 4-hole mounting.

Shielding performance

Shielding performance is achieved from 1/8 cell aluminium honeycomb panels with compressed edges mounted in a square-shaped flat Mu- ferro plate with a circular cut-out on the inside. The contact with the housing is made with an conductive foam gasket cut into the correct shape of the Honeycomb fan shield.

Performance below has been measured with honeycomb specifications 1/8 Cell size, 1/4 Thick.

Standard dimensions

In the table below some common types are specified to illustrate the required information. Threaded hole diameter is standard 3.5 mm but it can also be delivered in any other size.

Honeycomb fan shield available thicknesses