• Silver-colored arista qdd-400g-plr4-s 400g qsfp-dd single-mode transceiver modules with blue handles and metallic connectors
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Arista

Arista QDD-400G-PLR4-S | 400G QSFP-DD PLR4 Transceiver, SMF, 10km, SN

QDD-400G-PLR4-S

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Description

This is a 400G QSFP-DD parallel single-mode transceiver for point-to-point 400GE links up to 10km, and for breaking one 400G port out to four 100G-LR links in data centre networks. It is built for plants where individual fibre pairs need to be patched separately.

The module is 400GBASE-PLR4, made up of four 100G PAM-4 channels at 1310nm over SMF G.652. The -S variant uses SN optical connectors, so each of the four parallel links can be connected or disconnected independently without a breakout cable. Maximum power consumption is 12W, drawn from the host QSFP-DD port, and the operating case temperature range is 0 to 70 C.

It interoperates with Arista QSFP-100G-LR modules for 4 x 100G-LR breakout up to 10km, and with 400G-DR4 and 400G-XDR4 modules, with reach limited to the shorter-reach module. It needs a cable plant that matches SN connectors, not MPO-12. Check the Arista Transceiver and Cable Guide for supported switch platforms.

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

Features

- SN connectors let each of the four parallel 100G links be connected or disconnected independently, with no breakout cable needed
- Breaks out a single 400G port to four 100G-LR QSFP links
- Interoperates with 400G-DR4 and 400G-XDR4 modules, with reach limited by the shorter-reach module
- Optical specifications are identical to 100G-LR as defined in the 100G Lambda MSA
- Port can also be configured for 100G or 40G operation instead of 400G
- Four 100G PAM-4 channels at 1310nm over parallel single-mode fibre

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

- PHY type: 400GBASE-PLR4 (4 x 100GBASE-LR)
- Form factor: QSFP-DD
- Maximum reach: 10km over parallel single-mode fibre
- Fibre type: SMF G.652
- Wavelength: 1310 nm
- Optical connector: SN
- Optical channels: 4 x 100G PAM-4 (4 Tx and 4 Rx fibres)
- Tx power: -1.4 to +4.0 dBm per lane
- Rx power: -7.7 to +4.5 dBm per lane
- Optical interoperability: 4 x 100GBASE-LR up to 10km
- Breakout: 4 x 100G (QSFP-100G-LR)
- Maximum power consumption: 12W
- Dimensions (QSFP-DD Type 1, HxWxD): 13.5 x 18.4 x 78.3 mm
- Dimensions (QSFP-DD Type 2, HxWxD): 13.5 x 18.4 x 93.3 mm
- Operating case temperature: 0 to 70 C
- Storage temperature: -40 to 70 C
- Relative humidity: 5 to 95%
- Operating altitude: 0 to 10,000 ft

FAQs

Q: What connector does this module use?
A: It uses SN optical connectors. The non-S QDD-400G-PLR4 uses MPO-12 APC, so the cable plant must match SN connectors for this SKU.

Q: Can it break out to 100G links?
A: Yes. One 400G QSFP-DD port can be broken out to four 100G-LR links, interoperating with Arista QSFP-100G-LR modules up to 10km.

Q: How much power does it draw?
A: Maximum power consumption is 12W per module, powered from the host switch QSFP-DD port.

Q: What does it interoperate with?
A: It interoperates with 4 x 100GBASE-LR modules, and with 400G-DR4 and 400G-XDR4 modules. In those cases the reach is limited to that of the shorter-reach module.

Q: Which switches support it?
A: It fits QSFP-DD ports on supported Arista switches. Check the Arista Transceiver and Cable Guide for platform support.

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