QSFP+ Direct Attach Passive Copper Cable

The QSFP+ to 8x LC Connector Breakout Fiber Cable assemblies are high performance,cost effective I/O solutions for 40G LAN, HPC and SAN applications. It assemblies of 4 full duplex lanes, and are compliant with, QSFP+MSA and IEEE P802.3ba 40GBASE-SR4. It is offer a low power consumption,short reach interconnect applications. The cable each lane is capable of transmitting data at rates up to 10Gb/s, providing an aggregated rate of 40Gb/s.


  • Full duplex 4 channel 850nm parallel active optical cable
  • Transmission data rate up to 10.3Gbit/s per channel
  • SFF-8436 QSFP+ compliant
  • Hot pluggable electrical interface
  • Differential AC-coupled high speed data interface
  • 4 channels 850nm VCSEL & PIN photo detector array
  • Maximum link length of 300m on OM3 Multimode Fiber (MMF)and 400m on OM4 MMF
  • Low power consumption
  • Housing isolated from connector ground
  • 3.3V power supply voltage
  • Temperature Range: 0~ 70 °C
  • 10 Gigabit Ethernet
  • 40 Gigabit Ethernet
  • InfiniBand4x SDR, DDR, QDR
  • 2, 4, 8, 10 Gigabit Fiber Channel
  • Fiber Channel over Ethernet
  • SAS,Servers,Hubs,Switches,Routers
Absolute Maximum Ratings
Parameter Symbol Min Max Unit
Supply Voltage Vcc -0.3 3.6 V
Input Voltage Vin -0.3 Vcc+0.3 V
Storage Temperature Tst -20 85 ºC
Case Operating Temperature Top 0 70 ºC
Humidity (non condensing) Rh 5 95 %
Recommended Operating Conditions
Parameter Symbol Min Max Unit
Supply Voltage Vcc 3.13 3.47 V
Operating Case temperature Tca 0 70 ºC
Data Rate per lane fd 2.5 10.3 Gbps
Humidity Rh 5 85 %
Power Dissipation Pm   1.5 W
Fiber Bending Radius Rb 3   cm


Optical Characteristics – Transmitter
Parameter Symbol Min Max Unit
Centre Wavelength lamda 840 860 nm
RMS spectral width  0.65 nm
Average launch power, each lane Pout -7.5 2.5 dBm
Difference in launchpower between any two lanes (OMA)     4 dB
Extinction Ratio Peak power, each lane ER 3   dB
Transmitter and dispersion penalty (TDP), each lane TDP   3.5 dB
Average launch power of OFF transmitter, each lane     -30 dB
Eye Mask coordinates: X1, X2, X3, Y1, Y2, Y3 Specification Values Hit Ratio= 5x 10-5
0.23, 0.34, 0.43, 0.27, 0.35, 0.4
Optical Characteristics – Receiver
Parameter Symbol Min Max Unit
Centre Wavelength lamda 840 860 nm
Stressed receiver sensitivity in OMA each lane    -5.4 dBm
Maximum Average power at receiver input, each lane     2.4 dBm
Receiver Reflectance Peak power, each lane     -12 dB
Peak power, each lane     4 dBm
LOS Assert   -30   dBm
LOS De-Assert – OMA     -7.5 dBm
LOS Hysteresis   0.5   dB




X1:1m/30AWG X2:2m/30AWG X3:3m/30AWG X4:4m/26AWG X5:5m/26AWG
XX: length of fiber eg 20: 2m