Technical Product Application Note

Environmental Ratings & Classifications of EMP/HEMP & TEMPEST Filters

EEP Filters Power, Control & Communication/Signal Line Filters are manufactured to the highest design & production standards, and are endorsed as designed to meet the following listed environmental ratings and climatic categories:

Temperature Ratings

  • Operating temperature range (under full current loading): -45ºc to +50ºc.
  • Storage temperature: -55ºc to 85ºc.


  • Classification in accordance with IEC 60068-2-3: 93%RH at + 40ºc for 21 days.


  • In accordance with MIL-STD-810F, Method 500.4, Procedure I: 15,000-feet 1-hour.

Filters can be built in ‘accordance’ with IP65 upon request.

Our mission is to be the number one supplier of high performance and high power EMP Filters, Tempest Filters and EMC filters to the medical, defence, banking, telecommunications and datacentre sectors.