QSFP-40G-ER4 Overview

The Cisco 40GBASE-ER4 QSFP Module supports link lengths up to 40km over G.652 single-mode fiber with duplex LC connectors. The 40GE or OTU3 signal is carried over four wavelengths in the 1310nm range. Multiplexing and demultiplexing of the four wavelengths are managed within the device.

Quick Specs

Figure 1 shows the appearance of QSFP-40G-ER4.

QSFP-40G-ER4 Appearance

Table 1 shows the Quick Specs.

Product CodeQSFP-40G-ER4
Part Number02311BKT
Description40GBase-ER4 Optical Transceiver,QSFP+,40G,Single-mode Module (1310nm,40km,LC)
Form TypeQSFP+
InterfaceLC duplex
Cable TypeSMF
CDR SupportYes
TX Power-3.7~+4.5dBm
Commercial Temperature Range0 to 70°C (32 to 158°F)
Max Data Rate44.6Gbps
Max Cable Distance*40km**
Optical ComponentsDFB CWDM
DOM SupportYes
ProtocolsOTN OTU3, 40G Ethernet, Infiniband, Fiber Channel, SATA/SAS3
Receiver Sensitivity<-20.2dBm

Compare to Similar Items

Table 2 shows the comparison of QSFP-40G-ER4, QSFP-40G-iSR4 and QSFP-40G-LR4.

Product CodeQSFP-40G-ER4QSFP-40G-iSR4QSFP-40G-LR4
Part Number02311BKT02310MHR02310MHS
Description40GBase-ER4 Optical Transceiver,QSFP+,40G,Single-mode Module (1310nm,40km,LC)40GBase-iSR4 Optical Transceiver,QSFP+,40G,Multi-mode (850nm,0.15km,MPO)(Connect to four SFP+ Optical Transceiver)40GBase-LR4 Optical Transceiver,QSFP+,40GE,Single-mode Module(1310nm,10km,LC)
Max Data Rate44.6Gbps40Gbps44.6Gbps
Max Cable Distance*40km**150m**10km

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