QSFP-DD-800G-2FR4 800G QSFP-DD 2FR4 PAM4 1310nm 2km DOM Dual CS SMF Transceivers

Quick Details
Part number:VC-QDD-800G-2FR4 Connector Type: Dual CS
Form Factor:QSFP-DD Wavelength: 1310nm
Distance:2Km Fiber Type:SMF

Model Number: #17499 Category:

Brief Introduction

The Vchung 800G QSFP-DD 2FR4 is designed for use in 800 Gigabit Ethernet links over 2Km single mode fiber. The module has 8 independent electrical input/output channels operating up to 106.25Gbps per channel. This transceiver consists of two transmitter/receiver units, with each operating on a set of 4 wavelengths on the ITU G.694.2 CWDM grid near 1300nm. The transmitter path of the module incorporates a bi-directional PAM4 re-timer ASIC integrated with an 8-channels modulator driver, 8 externally modulated lasers and two optical multiplexers. On the receiver path, two optical de-multiplexers are coupled to 8 photodiodes and two 4-channel TIA arrays, along with the PAM4 re-timer. The electrical interface of the module is compliant with the 800GAUI-8 interface as defined by IEEE 802.3ck, and compliant with QSFP-DD MSA.


  1. Supports 850Gbps
  2. Single 3.3V Power Supply
  3. Up to 2km over SMF with KP4 FEC supported at the Host side
  4. Dual SMF CS connector
  5. 25Gbps (PAM4) electrical interface
  6. PIN and TIA array on the receiver side
  7. Power dissipation < 16W
  8. Case temperature range: 0°C to 70°C(commercial)
  9. Safety Certification: TUV/UL/FDA*1
  10. RoHS Compliant


  1. 8x100G Ethernet
  2. 2x400G Ethernet
  3. 1x800G Ethernet


Part No. VC-QDD-800G-2FR4 Form Factor QSFP-DD
Distance 2km Wavelength 1271nm, 1291nm, 1311nm and 1331nm
Operation Temperature 0 to 70°C (32 to 158°F) Connector Dual CS
Voltage 3.3V Cable Type SMF
DDM Yes Transmitter Type EML
Receiver Type PIN TX Power -3.2~+4.4dBm
Receiver Sensitivity < -4.6dBm Powerbudget 1.4dB
Maximum Power < 16W Data Rate 2x400GbE
Host Required FEC Modulation Format PAM4
Extinction Ratio >3.5dB Protocols IEE802.3ck, IEEE 802.3cu, QSFP-DD MSA

QSFP-DD-800G-2FR4 800G QSFP-DD 2FR4 PAM4 1310nm 2km DOM Dual CS SMF TransceiversOptical transceivers port(LC)

For LC port, there are two types of single-fiber bidirectional optical transceivers (one LC connector) and dual-fiber unidirectional optical transceiver (two LC connectors).
Single fiber bidirectional is used to send and receive signals in one fiber, and dual fiber unidirectional optical transceivers are used to one fiber to send signals and other fiber to receive signals.

Optical transceivers series

Vchung offer comprehensive optical modules, data rate from 155M to 100G,form factor including SFP,SFP+,XFP,SFP28,QSFP+,CFP,CFP2 and QSFP28,support MMF and SMF interface.
Vchung closely follow optical communication market trend, offers comprehensive transceivers solution, including:
1. Data center:100G QSFP28, 40GQSFP+, 10G SFP+, 10G/25G/40G/100G AOC.
2. Transport (OTN,PTN):100G CFP/CFP2/CFP4, 10G SFP+/XFP BIDI/CWDM/DWDM/Tunable, SFP.
3. Wireless(5G fronthaul,middlehaul and backhaul):25G SFP28, 50G QSFP28 PAM4.
QSFP-DD-800G-2FR4 800G QSFP-DD 2FR4 PAM4 1310nm 2km DOM Dual CS SMF Transceivers


The optical transceivers can be adapted to Cisco, Huawei, Huasan, Alcatel-Lucent, Juniper, Brocade, HPE, Extreme, Ericsson and other equipment. It is 100% compatible with all vendors on the market.
Of course, before confirming the purchase, it is best to inform model of the equipment to which the optical transceivers is applied.
QSFP-DD-800G-2FR4 800G QSFP-DD 2FR4 PAM4 1310nm 2km DOM Dual CS SMF Transceivers

QSFP-DD-800G-2FR4 800G QSFP-DD 2FR4 PAM4 1310nm 2km DOM Dual CS SMF TransceiversIndustrial Standards

VCHUNG all optical transceivers meet or exceed industrial standards, such as CE and RoHS as well as the regulations of the FCC. Through continuous monitoring before, during and after the production process.

QSFP-DD-800G-2FR4 800G QSFP-DD 2FR4 PAM4 1310nm 2km DOM Dual CS SMF TransceiversFull MSA Compliance

High availability optical transceivers meet the Multi Source Agreement (MSA) standard SFF-8431. With MSA Standards various manufacturers determine standardizations of the Transceiver to ensure the interoperability. The optical transceivers interface is defined electrically, mechanically and functionally.

Quality assurance

VCHUNG provides OEM services, VCHUNG supply all optical modules are high quality and reliable optical transceivers. For quality assurance, we provide three years replacement and lifelong maintenance service.
QSFP-DD-800G-2FR4 800G QSFP-DD 2FR4 PAM4 1310nm 2km DOM Dual CS SMF Transceivers



This drawing is for reference only. If you need more information and need to modify the drawing, please Email us:support@vchung.com

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