Multi Line Analogue Telephone Line HEMP Filter

High-altitude Electro-Magnetic Pulses (HEMP) generated from both natural and intentional sources can cause disturbance and damage to military and industrial installations by getting transmitted through telephone lines.

EMP/HEMP telephone line filters protect telecommunication and electronic equipment by absorbing the potentially destructive EMP voltage and current within the filter before it reaches the devices.

HEMP telephone line filters are designed to withstand all the E1, E2 and E3 pulse types. These components are subjected to the PCI test and must match the shielding effectiveness as stated in MIL-STD-188-125.

  • Voltage Range

    95VAC / 125VDC

  • Current Range

    125 mA

  • Application

    Telephone

  • Voltage Range

    95VAC / 125VDC

  • Current Range

    125 mA

  • Application

    Telephone

Product Specification

Applications

Telephone and Signal lines for various application areas:

  • Military – Power Line POE for shielding chambers, Radar systems, Airborne Communication Systems
  • Medical systems – MRI scanning rooms and diagnostic facilities
  • High security government agencies
  • Banking and financial services
  • Data centers and server rooms
  • Test & measurement equipment

What EMIS Offers

EMIS range of EMP Surge Protectors/Filters for Analog Telephone Lines provide very effective noise attenuation for a wide range of military and industrial applications.

Our Multi Line HEMP Filters support filtering of Up to 100 Lines. They have very low power requirements.

All lines are individually filtered. The filters guarantee good attenuation for both continuous and transient EMI noise.

Mounting, Construction, Ratings

  • Multi Lines HEMP Filter (2, 4, 6, 8, 32 up to 100 Lines)
  • Tested as per MIL 188-125-1 standards (Unrestricted Lines of Intra-site, Short Pulse (E1))
  • Upto 500mA
  • 125VDC/90VAC
  • 100dB Attenuation upto 3GHz
  • >100MΩ (Prior to fitting Surge suppressors)
  • Max Surge Current : 10KA @ 8/20µs

Note: Customer specific solutions are also delivered on request, apart from filters and shielding solutions from the product catalog. Very High attenuation Filters upto 40GHz can be made as per customer request.