Electrep provides a full series of Telecom quality, high performance 40G QSFP+ transceiver modules - the cost effective 40G QSFP solutions according to SFP+ Multi-Sourcing Agreement (MSA), which are compliant with RoHS.  The modules have been used for various 40G fiber optic / data center applications such as 40G Ethernet, Data Center, and Switch and Router for multiple years with extremely low return rate and super reputation.

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40G QSFP+ SR4/LR4 Products

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40G QSFP+ SR4/LR4 Details

40G Ethernet
Data Center Interconnect
Switch to switch/router interface
InfiniBand4x SDR, DDR, QDR (QSFP+ SR4/eSR4)
Features and Benefit*:
Compliant with IEEE Std 802.3ba, 40G Ethernet LR4 (for QSFP+ LR4)
4 Parallel lanes design
Compliant with QSFP+MSA
Management interface specifications per SFF-8436
4 channels PIN photo detector
Up to 11.2Gb/s per channel data links
Single +3.3V power supply
Class 1 laser safety certified
Commercial operating temperature:0 to +70
Up to 1.4km on SMF (for QSFP+ SR4/eSR4); Up to 10km on SMF (QSFP+ LR4)
4 CWDM Lane Mux/Demux design
4 Channels CWDM DFB
RoHS Compliant
Compatible to: Cisco, HP, Juniper, Brocade, Force10, Ciena, Allied Telesis, Dell, Extreme, D-link, Linksys, Telco, Calix, Adtran, 3Com, Nortel...
* Please check the detailed specs for each PN from the specific pdf datasheets.
Part Number Transmitter Output Power Receiver Sensitivity Reach Temp DDM RoHS
Order Information:
PN Data Rate Wavelength Output/Receiver
Temp. Application
40G QSFP+ Transceivers            
E-S4981D 41.2Gbps 850nmVCSEL -7.6 ~ +2.4dBm
/PIN /<-9.5dBm
100m/MPO 0~70c 40GBASE-SR4
E-S4981D-eSR4 41.2Gbps 850nmVCSEL -7.6 ~ +2.4dBm
/PIN /<-9.5dBm
300M/MPO 0~70c 40GBASE-CSR4
E-S4993D 41.2Gbps 1271~1331DFB -7.5 ~ 2dBm
/PIN /<-11.5dBm
10Km; LC 0~70c 40GBASE-LR4
For any question:
Email: question@electrep.com