L-JACK™ Fiber Optic Connector


OCC introduces L-JACK™, a robust fiber optic duplex LC connector that couples the small form factor of traditional LCs with the known ruggedness of OCC harsh environment connectors. OCC’s L-JACK connector is designed for environmentally challenging situations and offers easy installation with proven optical performance. Available in a broad range of configuration possibilities, the L-JACK is ideal for installations in extreme mobile environments, industrial applications, and any install that requires excessive fiber optic protection.

Conventional fiber optic connectors were never intended for, or able to withstand, the rough handling of deployable and harsh applications. With the OCC L-JACK fiber optic connector, users can expect:
  • Unsurpassed ruggedized connector design. OCC’s L-JACK is manufactured with optimum metal materials that can withstand wide temperature ranges and provide extreme impact resistance, unlike the competition’s polymer versions. The L-JACK’s robust design is ideal for almost any harsh environment application where survivability is a factor. Multiple plating options complement the resilient nature of this connector to reinforce its mechanical performance.
  • Superior optical performance. Compliant with IEC 61540-20, Telecordia GR-326, and TIA/EIA-604-10-A standards, the L-JACK connector accommodates standard LC and is available in multimode, single-mode and single-mode APC polish. The threaded coupling ensures proper fiber alignment and reinforces positive mating of the LC connector to the receptacle.
  • IP-68 environmental sealing. OCC’s L-JACK prevents dirt and moisture from deterring optical connections and protects the duplex LC connector from harsh environments where mud and water are present.
  • Specialized strain relief for intense tensile loading. When terminated with OCC’s Distribution or Breakout style cables, the L-JACK back shell enables up to 400 pounds of pull strength allowing the fiber cable to withstand intense tensile loading through difficult hauls.
  • Variety of configurations to fit any application need. Once terminated, the L-JACK plug with back shell is then used to interconnect with a variety of L-JACK receptacles, including flange-mount, jam-nut and D38999 jam-nut form receptacles.
While there are many similar types of connectors on the market, only the OCC L-JACK can bring proven durability and performance to deployable and harsh environment communications. Ideal for quick equipment connections, the L-JACK fiber  optic connector is a logical choice for reliable communications networks.


  • CATV, LAN, WAN, and PONS
  • Telecommunications
  • Remote Radio Heads (RRH)
  • Data Center and Processing Networks
  • Fiber-to-the-X (FTTC, FTTH, FTTD)
  • Deployable Mobile Systems

Features & Benefits

  • L-JACK receptacles are designed to accommodate standard LC/UPC and LC/APC duplex jumpers that have been
    manufactured in accordance with IEC-61540-20, Telecordia GR-326 and TIA/EIA-604-10-A connector standards.
  • All L-JACK receptacles and plugs provide an IP-68 compliant seal and pass IEC-60529 standards for water submersion and dust testing.
  • Specialized strain relief supports 400 lbs of tension strength and provides superior cable performance compared to commercial options when utilized with OCC Distribution or Breakout style cables.
  • L-JACK in-line receptacles provide the ability to “daisy-chain” duplex assemblies.
  • L-JACK offers a variety of plug and receptacle options including flange-mount, and jam-nut options.
  • L-JACK can be ordered as a component or as factory terminated cable assemblies provisioned with L-JACK plugs and receptacles or other OCC connector options. Contact OCC Sales for additional ordering information.

Performance Specifications

 Parameter  Specification  Performance
 Insertion Loss (IL) (UPC)
 EIA/TIA-455-171  0.25dB - Typical;  0.50dB - Maximum
 Return Loss (RL) (UPC)
 EIA/TIA-455-107A  Minimum 0.50dB
 Operational Temperature
 EIA/TIA-455-5C  -40ºC to +85ºC
 Storage Temperature
 EIA/TIA-455-5C  -40ºC to +85ºC
 Temperature Humidity Cycling
 EIA/TIA-455-5C  -40ºC to +71ºC at 95% RH, 240 hrs.
 Dust Test
 IEC 60529 IP68
 8 hrs dust exposure with 20 mbar
 Water Submersion
 IEC 60529 IP68
 48 hrs. immersion/1 meter water
 Cable Retention1
 EIA/TIA-455-6  400 lbs. for 10 minutes
 Mating Durability
 EIA/TIA-455-21  500 cycles
 Impact  EIA/TIA-455-2C  8 drops, 2.4 meters
 Vibration  EIA/TIA-455-11  10-55Hz, 2 hr./axis, 3 axis
 Mechanical Shock
 EIA/TIA-455-14A  Condition C, 5 shocks/axis
 Crush  EIA/TIA-455-26A  450 lbs.

Instruction Sheets