At Schlegel Electronic Materials Inc. we have an unwavering commitment to the safety of our customers and our co-workers during the COVID-19 virus pandemic. SEM is a worldwide company and our facilities in Asia, Europe, and the United States are working in concert to provide production support as needed. We are currently operating at 100%

Mesh Performance

The performance of any RFI / EMC window is dependent on how well it is bonded to the equipment screen. The following tables show the screening capability of the mesh, where the mesh itself is clamped to the screen with no gaskets in between.

The shielding performance will improve as the window size reduces, due to the performance characteristics of the aperture. Mesh selection should be based on required performance and with the way that it interacts with your chosen display.

SHIELDING PERFORMANCE (dB ATTENUATION)

Test Window 300 x 300 mm

 OpeningsWireEFIELDPLANEWAVEOpen
Meshper inchdiameter1 MHz10 MHz100 MHz100 MHz400 MHz1 GHz10 GHzaera %
Copper1000.0019090705020
Copper1000.0021071118570705864
Stainless500.00294908258552882
Stainless800.001106888264603484
Stainless1000.001128112927780867481
Stainless80 x 600.00110210510375604384

Test Window 1000 x 1000 mm for BLK / Cu / 100 opi / 0.002 / 90º

FrequencyModeITO (dB)Single Mesh (dB)Double Mesh (dB)
100 KHzE-98123
1 MHzE-93152
10 MHzE3278124
100 MHzE2865111
400 MHzP3260115
1 GHzP285094
10 GHzP24-67

Test methods used were consistent with MIL – STD – 285
The about test results are for guidance only