• Vibrant pink glossy Juniper QDD-400G-FR4 400G QSFP-DD fruit sticker
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Juniper

Juniper QDD-400G-FR4 | 400G QSFP-DD Transceiver, FR4, 2km SMF, Duplex LC

QDD-400G-FR4

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Description

The QDD-400G-FR4 is a 400GBASE-FR4 QSFP-DD optical transceiver for 400 Gigabit Ethernet over duplex single-mode fibre. It suits data centre, campus and metro interconnects up to 2 km on Juniper PTX and QFX 400G platforms.

It uses four CWDM wavelengths in the 1310 nm band (1271, 1291, 1311 and 1331 nm) with PAM4 modulation, an EML laser transmitter and a PIN photodiode receiver. The connector is duplex LC, so it needs only a single fibre pair rather than the multiple fibres required by parallel-optics 400G modules. The standard temperature version operates from 0 to 70 C and supports host FEC and digital diagnostics monitoring.

The module appears in the Juniper Hardware Compatibility Tool for 400G QSFP-DD ports on Junos OS Evolved platforms, including PTX10003, PTX10004 (with line card PTX10K-LC1301-36DD), QFX5220-32CD and QFX5130-32CD. Check the compatibility tool for the full platform and release matrix.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Duplex single-mode fibre reach of 2 km, using fewer fibres than parallel-optics 400G modules
- Four-lane CWDM design in the 1310 nm band with PAM4 modulation
- Digital diagnostics monitoring (DDM/DOM) for per-lane optical power, temperature, voltage and laser bias
- Host FEC support for 400G Ethernet links
- Standard QSFP-DD footprint for high-density 400G ports
- Listed as a Common Optic in the Juniper Hardware Compatibility Tool

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Form factor: QSFP-DD
- Standard: 400GBASE-FR4 / 400G-FR4 (100G Lambda MSA)
- Juniper part number: 740-085349
- Media type: Single-mode fibre (SMF)
- Maximum distance: 2 km
- Connector: Duplex LC (LC/UPC)
- Modulation: PAM4
- TX wavelength: 4-channel CWDM (1271/1291/1311/1331 nm)
- RX wavelength: 4-channel CWDM (1271/1291/1311/1331 nm)
- Transmitter type: EML laser
- Receiver type: PIN photodiode
- Extinction ratio (min): 3.5 dB
- Average receiver sensitivity (min) per lane: -7.3 dBm
- Average receiver sensitivity (max) per lane: 3.5 dBm
- Receiver overload: 4.5 dBm
- Average link budget: 4 dB
- Supported data rate: 425 Gbps (400G Ethernet)
- FEC: Host FEC supported
- DDM/DOM: Supported
- Operating temperature: 0 to 70 C (standard)
- Storage temperature: -40 to 85 C
- Relative humidity: 5 to 85%
- Compliance: CE, RoHS, Class 1 FDA and IEC60825-1 laser safety

FAQs

Q: What fibre and connector does it use?
A: It runs over duplex single-mode fibre with an LC connector, up to 2 km. Only one fibre pair is needed.

Q: Which Juniper platforms is it listed for?
A: It is listed for 400G QSFP-DD ports on Junos OS Evolved platforms including PTX10003, PTX10004 (line card PTX10K-LC1301-36DD), QFX5220-32CD and QFX5130-32CD. Check the Juniper Hardware Compatibility Tool for the full platform and release matrix.

Q: What temperature range does this version support?
A: This is the standard temperature module, operating from 0 to 70 C.

Q: Does it support digital diagnostics?
A: Yes. DDM/DOM reports per-lane optical power, temperature, voltage and laser bias current.

Q: What is the Juniper part number for this module?
A: The Juniper part number is 740-085349.

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