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LMQ3921 QSFP-DD DR4 Optical Transceiver

4x100G 1310nm 500m/2km

The LTA1328 QSFP28 Optical transceiver is intended for the service with single mode fiber in 103.125Gb/s high speed data communications and computing applications. It meets the requirements of QSFP28 MSA,CWDM4 MSA, operates from a 3.3V DC power supply and is of-fered in the commercial temperature range. The module has an aggregate link bandwidth in excess of 100Gb/s by multiplexing of 4 CWDM opti-cal lanes, each lane capable of transmitting 25.78125Gb/s over 2km on SMF optical fiber. It is fabricated with a rugged die cast metal housing and cage assembly. The device is Class I laser safety compliant and meets the EU Directive 2002/95/EC for RoHS compliance.

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Part Number Package Interface Reach Temp Fiber Type Wavelength Rate Tx Output Rx Input
LMQ3921-PC+ QSFP-DD MPO 500m/2km C Single-mode 1310nm 4x100Gb/s -2.9~4dBm(each lane) -5.9~4dBm (each lane)

• High performance computing interconnect
• Data Centers
• Cloud Networks


• 8 independent electrical input/output channels 
• 4 independent parallel optical channels
• MPO optical connector
• Hot Pluggable
• 500m link on SMF single-mode Fiber
• Silicon photonics Technology
• QSFP-DD MSA Compliance
• Case Operating Temperature:
• Commercial: 0 to 70ºC
• RoHS II Compliance