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Passive Ethernet & USB Filters

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Made in the USA 

DJM Electronics RF Shielded EMI Ethernet Filters

PASIF 1G


Pasif 1G Ethernet EMI Filter

Price: Call or Email

PASSIVE GIGABIT ETHERNET EMI FILTER, ≥80 dB up to 40 GHz



  • Gigabit‑capable 8‑line passive design (no power required)
  • ≥80 dB shielding effectiveness
  • Field‑swappable threaded penetration for 1"–12+" wall thickness
  • Ideal for SCIF, TEMPEST and EMC test enclosures
  • Supports custom I/O formats up to 250 MHz per line
  • ICD 705 compliant

PASIF 1G


ACTIV 10G

ACTIV 10G Ethernet EMI Filter

Price: Call or Email

DIGITAL 10 GbE EMI FILTER, ≥100 dB 10 kHz–40 GHz



  • Supports 10BASE‑T through 10GBASE‑T (10 Mb/s–10 Gb/s)
  • ≥100 dB shielding effectiveness from 10 kHz to 40 GHz
  • Field‑swappable threaded penetration for 1"–12+" wall thickness
  • 12 VDC 2 A external power supply included
  • Meets ICD 705 and MIL‑STD‑461 requirements

ACTIV 10G


ACTIV PoE

ACTIV PoE Ethernet EMI Filter

Price: Call or Email

INTEGRATED 60 W PoE & 10 GbE FILTER, ≥100 dB ISOLATION



  • Passes up to 60 W (802.3bt) while shielding 10 kHz–40 GHz
  • Auto‑negotiates PoE class and data rate up to 10 Gb/s
  • Internal low‑noise injector — no external injector necessary
  • Field‑swappable threaded penetration for 1"–12+" wall thickness
  • LED indicators for PoE and link status
  • Ideal for PTZ cameras, access points, IP telephones

ACTIV PoE


DJM Electronics USB 3.1 Gen 2 EMI Filters

ACTIV USB 3.1


ACTIV USB 3.1

Price: Call or Email

USB‑C EMI FILTER – 10 Gb/s & 60 W PD, ≥90 dB up to 40 GHz

  • USB 3.1 Gen 2 (10 Gb/s) full‑duplex data throughput
  • Type‑C connectors inside and outside, reversible orientation
  • Passes USB Power Delivery 3.0: 5, 9, 15 or 20 V up to 3 A (60 W)
  • Backwards compatible with USB 2.0/1.1 devices
  • Field‑swappable threaded penetration for 1"–12+" wall thickness
  • Complies with ICD 705, TEMPEST, and MIL‑STD‑461

ACTIV USB 3.1


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