Senko CS Duplex Fiber Optic Patchcord

Senko CS Duplex Fiber Optic Patchcord

The CS® connector was introduced as a replacement to current duplex LC connectors which are too big for newer generation transceiver interfaces and to increase the connector density in patch panels. The CS® connector is operated with a push-pull mechanism having two cylindrical, spring-loaded 1.25 mm ferrules, within a single housing. The CS® connector’s two ferrules are pitched at 3.8 mm apart, which is the minimum possible spacing to meet today’s TOSA and ROSA optics requirement. The CS® connector can be used with either 2 mm or 3 mm jacketed cable.
CS® Connector Designed for next generation 200/400G transceiver QSFP-DD and OSFP.


  • 40% size reduction compared to LC Duplex
  • Connector adopted by QSFP-DD, OSFP and COBO
  • Performance exceeds LC
  • Push/Pull tab for a better usability in high density applicationsfor a better usability in high density applications
  • Double the density in patch panel compared to LC


  • Data center
  • Next generation Telecom & LAN, WAN
Mode SM MM
Polishing UPC UPC
Insertion Loss Typical ≤0.15dB, Max ≤0.3dB Typical ≤0.25dB, Max ≤0.5dB
Return Loss ≥55dB ≥35dB
Interchangeability ≤0.1dB
Salt Spray ≤0.2dB
Repeatability ≤0.1dB, RL≤5 (1,000 times)
High Temperature ≤0.2dB (+85°C 168 hours)
Low Temperature ≤0.2dB (-40°C 168 hours)
Temperature Cycle ≤0.2dB (-40°C~85 °C 21 cycles 168 hours)
Humidity ≤0.2dB (95% 75°C 168 hours)
Durability ≥1,000 matings
Tensile Strength ≥90N (3.0mm), ≥70N (2.0mm)
Vibration ≤0.1dB (10-55Hz 1.5mm)
Falling ≤0.2dB (1.5m high, 8 times)
Operating Temp. -20°C~+70°C
Ordering Information:
Brand MAY
Name CSPA: Senko CS Duplex Fiber Optic Patchcord
Connector 1 CS: CS/UPC
Connector 2 CS: CS/UPC
Fiber Count DU: Duplex
Fiber Type 2D: SM G.652D
7A1: SM G.657A1
7A2: SM G.657A2
OM1: MM 62.5/125um
OM2: MM 50/125um
OM3: MM 50/125um
OM4: MM 50/125um
OM5: MM 50/125um
Cable Length 0.5: 0.5m
1: 1m
1.5: 1.5m
2: 2m, etc
Cable Diameter 9: 0.9mm
2: 2.0mm
3: 3.0mm
Jacket Material P: PVC