QDD-400G-FR4 (740-085349) Juniper Compatible 400GBASE-FR4 QSFP-DD Transceiver
Juniper compatible QDD-400G-FR4 - Key Features
- Compatibility: Juniper
- Media Type: Single-Mode Fiber (SMF)
- Connector: Double LC/UPC
- Fiber Count: Duplex
- Maximum Distance: 2 km
- Guaranteed Link Budget: 4 dB
- Tx Wavelenght: CWDM 4 Ch
- Supported Data Rate: 425 Gbps
- DDM/DOM: Supported
- Forward Error Correction (FEC): Host FEC Supported
- Temperature Range: Standard 0°-70°C
Juniper QDD-400G-FR4 Price
SKU:400G-QSFP-DD-2.1-JU
Made to Order - 2 WeeksJuniper compatible QDD-400G-FR4 Specifications
Form Factor | QSFP-DD |
Modulation | PAM4 (Pulse Amplitude Modulation 4-level) |
Media Type | Single-Mode Fiber (SMF) |
Connector | Double LC/UPC |
Fiber Count | Duplex |
Maximum Distance | 2 km |
Guaranteed Link Budget | 4 dB |
TX Wavelenght | 4-channel CWDM (1271/1291/1311/1331 nm) |
RX Wavelenght | 4-channel CWDM (1271/1291/1311/1331 nm) |
Supported Data Rate | 425 Gbps |
Supportet Ethernet Applications | 400G Ethernet (425 Gbps) |
DDM/DOM | Supported |
Forward Error Correction (FEC) | Host FEC Supported |
CDR (Clock and Data Recovery) chip | Supported |
Transmitter Type | EML Laser |
Tx Wave Bandwidth | 73 nm (1264.50–1337.50 nm) |
Average Launch Power (Min) Each Lane | -3.3 dBm |
Average Launch Power (Max) Each Lane | 3.5 dBm |
Extinction Ratio (Min) | 3.5 dB |
Receiver Type | PIN photodiode |
RX Wave Bandwidth | 73 nm (1264.50–1337.50 nm) |
Average Receiver Sensitivity (Min) Each Lane | -7.3 dBm |
Average Receiver Sensitivity (Max) Each Lane | 3.5 dBm |
Receiver Overload | 4.5 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power Consumption (Max) | 10 W |
Power | +3.3V single power supply |
Compliance | CE, RoHS, Class 1 FDA and IEC60825-1 Laser Safety Compliant, 100G Lambda MSA, 400GBASE-FR4, IEEE 802.3cu, QSFP-DD MSA |
Juniper compatible QDD-400G-FR4 Datasheet
v2Complete technical specifications and product details
Juniper compatible QDD-400G-FR4 Description
The EDGE 400G-QSFP-DD-2.1 is a direct replacement for the Juniper QDD-400G-FR4 (Juniper internal PN 740-085349), coded with Juniper-recognized EEPROM data. Junos accepts it on supported platforms without per-interface overrides. Same duplex LC connector, same 2km single-mode reach.
The module transmits on four CWDM wavelengths (1271, 1291, 1311, 1331nm) using PAM4 modulation at 53.125 GBaud per lane for a 400 Gb/s aggregate data rate. An internal DSP performs gearbox adaptation between the electrical host interface and the four optical lanes. Rated for a 4dB maximum optical link budget, supporting 2km over OS2 single-mode fiber. Operating temperature 0 to 70°C.
QDD-400G-FR4 is used on Juniper platforms with QSFP-DD ports: QFX5220 and QFX5230 data center switches, MX304 router, MX10008 with compatible 400G line cards, and PTX10003/PTX10008 transport routers. Check the Juniper Hardware Compatibility List for your platform and Junos release.
Juniper uses two part numbers for this module: QDD-400G-FR4 (the industry-standard SKU) and 740-085349 (Juniper's internal ordering code). Both refer to the same 400GBASE-FR4 QSFP-DD optic. Arista also uses the SKU QDD-400G-FR4 but with different EEPROM coding.
The module conforms to IEEE 802.3cu for the 400GBASE-FR4 optical interface. Diagnostic monitoring via CMIS provides real-time per-channel transmit and receive power, temperature, voltage, and bias current through Junos CLI or your NMS.
Need to confirm the replacement for your Juniper 740-085349 purchase order? Contact our sales team.
Frequently Asked Questions
Which Juniper platforms support the QDD-400G-FR4?
QDD-400G-FR4 is used on Juniper platforms with QSFP-DD ports, including the QFX5220 and QFX5230 data center switches, MX304 router, MX10008 with compatible 400G line cards, and PTX10003/PTX10008 transport routers. Because the EDGE module is coded with Juniper-recognized EEPROM data, Junos accepts it on supported platforms without per-interface overrides. Check the Juniper Hardware Compatibility List for your specific platform and Junos release.
What is the Juniper part number 740-085349?
740-085349 is Juniper's internal part number for the QDD-400G-FR4. Both refer to the same 400GBASE-FR4 QSFP-DD module. If your purchase order or spares inventory references either QDD-400G-FR4 or 740-085349, the EDGE 400G-QSFP-DD-2.1 is the correct replacement.