L-JACK™ Connectors

Installation zone RECOMMENDATION

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-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 backshell 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 backshell 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 the most reliable communication networks.


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.


Download Drawing(s)
Part NumberDescriptionPDFDWG/ZIP 
RLRB121LP01AL-JACK plug, dust cap, short body, (2) LCs, beige, MM n/a n/a
RLRB121LP02BL-JACK plug, dust cap, short body, (2) LCs, blue, SM n/a n/a
RLRB121LP02EL-JACK plug, dust cap, short body, (2) LCs, green, SM/APC n/a n/a
RLRM121LC01AL-JACK inline receptacle with back shell, dust cap, short body, (2) LCs, beige, MM n/a n/a
RLRM121LC02BL-JACK inline receptacle with back shell, dust cap, short body, (2) LCs, blue, SM n/a n/a
RLRM121LC02EL-JACK inline receptacle with back shell, dust cap, short body, (2) LCs, green, SM/APC n/a n/a
RLRD121LC01AL-JACK receptacle, flange-mount, dust cap, beige, MM n/a n/a
RLRD121LC02BL-JACK receptacle, flange-mount, dust cap, blue, SM n/a n/a
RLRD121LC02EL-JACK receptacle, flange-mount, dust cap, green, SM/APC n/a n/a
RLRK121LC01AL-JACK receptacle, jam-nut, dust cap, beige, MM n/a n/a
RLRK121LC02BL-JACK receptacle, jam-nut, dust cap, blue, SM n/a n/a
RLRK121LC02EL-JACK receptacle, jam-nut, dust cap, green, SM/APC n/a n/a

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