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SFP Transceiver/

QSFP28 100G CWDM4 2K

Reach: 2 km via SMF

Link budget assumes the use of KR4 FEC by the host

Uncooled CWDM DFB lasers, directly modulated

Electrical interface: retimed CAUI-4 per 100G Ethernet IEEE 802.3bm Annex 83E

User controllable Transmit Input Equalization and Receiver Output Amplitude

MSA-compliant performance monitoring via I2C interface

Fiber connector: SMF LC duplex connector


0–70°C operating temp

Power dissipation < 3.5W RoHS6 compliant (lead-free)

  • Product Detail
  • Applications
  • Pin Descriptions
  • Pin Definition

The HANSUN QSFP28 100G-CWDM4-2km module is a highly integrated 4x28G transceiver focused on reach, bandwidth, density and cost for high port-count 100G systems, and client-side 100G interfaces. It is compliant with the 100G 4WDM-10 MSA, which is based on the CWDM4 MSA version 1.1. It is interoperable with CWDM4 transceivers over a 2 km reach.

Specifications of QSFP28 100G CWDM4 2k

Center WavelengthCh0λ01264.51277.5nm
Bit Rate per ChannelB25.78125±100ppmGb/s
Side Mode Suppression RatioSMSR30dB
Average launch power, each lane-6.52.5dBm
Optical Modulation Amplitude (each lane)OMA-4.02.5dBm
Launch power in OMA minus TDP, each laneOMA-TDP-5.0dBm
Transmission & dispersion penalty,each laneTDP3.0dB
RIN20 OMA-130dB/Hz
Transmitter Reflectance-12dB
Extinction RatioER3.5dB
Transmitter eye mask definition {X1, X2, X3, Y1, Y2, Y3}{0.31, 0.4, 0.45, 0.34, 0.38, 0.4}CWDM4 MSA Technical Specifications Rev 1.1
Total average launch power8.5dBm
Average launch power of OFF transmitter, each lane-30dBm
Optical return loss tolerance20dB
  • 100G CWDM4 Ethernet
  • InfiniBand 4x EDR

2Tx2nTransmitter Inverted Data Input
3Tx2pTransmitter Non-Inverted Data Input
5Tx4nTransmitter Inverted Data Input
6Tx4pTransmitter Non-Inverted Data Input
8ModSelLModule Select
9ResetLModule Reset
10Vcc Rx+3.3 V Power supply receiver
11SCL2-wire serial interface clock
12SDA2-wire serial interface data
14Rx3pReceiver Non-Inverted Data Output
15Rx3nReceiver Inverted Data Output
17Rx1pReceiver Non-Inverted Data Output
18Rx1nReceiver Inverted Data Output
21Rx2nReceiver Inverted Data Output
22Rx2pReceiver Non-Inverted Data Output
24Rx4nReceiver Inverted Data Output
25Rx4pReceiver Non-Inverted Data Output
27ModPrsLModule Present
29Vcc Tx+3.3 V Power supply transmitter
30Vcc1+3.3 V Power Supply
31LPModeLow Power Mode
33Tx3pTransmitter Non-Inverted Data Input
34Tx3nTransmitter Inverted Data Input
36Tx1pTransmitter Non-Inverted Data Input
37Tx1nTransmitter Inverted Data Input

Important Notice of QSFP28 100G CWDM4 2k

Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by T&S before they become applicable to any particular order or contract. In accordance with the T&S policy of continuous improvement specifications may change without notice. The publication of information in this data sheet does not imply freedom from patent or other protective rights of T&S or others. Further details are available from any T&S sales representative.



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