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QSFP28-100G-LB | 100G QSFP28 Optical Transceiver
QSFP28-100G-LB | 100G QSFP28 Optical Transceiver

Our Price: $35.00

Warranty: 1 Year Warranty

Product Code: QSFP28-100G-LB

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The QSFP28 active electrical loopback is used for testing QSFP28 transceiver ports in board level test. By substituting for a full-featured QSFP28 transceiver, the electrical loopback provides a cost effective low loss method for QSFP28 port testing. The QSFP28-100G-LB-CO is packaged in a standard MSA housing compatible with all QSFP28 ports. Transmit data from the host is electrically routed (internal to the loopback module) to the receive data outputs and back to the host. Since the loopback module does not contain laser diodes, photodiodes, laser driver or transimpedance amplifier chips, etc., it provides an economical way to exercise QSFP28 ports during R&D validation, production testing and field testing. The QSFP28-100G-LB-CO provides QSFP28 power Class 1, 2, 3, or 4 loading using a customer supplied +3.3V voltage supply. Power Classes 5, 6 and 7 are available upon request.


  • 4 channels full-duplex transceiver modules
  • Supports 100Gbps total data rate
  • Low power consumption <1W
  • Hot Pluggable QSFP form factor
  • Built-in digital diagnostic functions:Temperature,Voltage
  • Operating case temperature 0░C to +70░C
  • 3.3V power supply voltage
  • RoHS 6 compliant (lead free)


  • IEEE 802.3bm 100GBASE SR4
  • Infiniband EDR
  • QSFP port/system testing


  • Part Number: QSFP28-100G-LB-CO
  • Product Type: Transceiver Module
  • Form Factor: QSFP28
  • Data Rate (max): 100Gb/s
  • Distance (max): -
  • Transmitter: No
  • Receiver: No
  • Digital Diagnostic: Yes
  • Connector: No
  • Cable Type: No
  • Wavelength: No
  • Operating Temperature: 0 to 70░C (32 to 158░F)

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100G QSFP28