• Silver-colored arista qdd-400g-sr8-c 400g sr8 transceiver modules with blue handles and metallic mpo-16 connectors
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Arista

Arista QDD-400G-SR8-C | 400G QSFP-DD SR8-C Transceiver, MMF, 100m, MPO-16

QDD-400G-SR8-C

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Description

The QDD-400G-SR8-C is a 400GBASE-SR8 QSFP-DD multimode optical transceiver from the Arista 400G QSFP-DD optics range. It is built for short-reach 400G data centre links over parallel OM4 multimode fibre, reaching up to 100m, and it suits high-density leaf and spine layouts where QSFP-DD ports are used.

The module runs at 850nm and connects through an MPO-16 APC connector. Reach is 70m over OM3 and 100m over OM4 parallel multimode fibre with a 50 um core. The SR8-C variant adds channelized operation, so a single 400G port can run as 8x 50G-SR / 25G-SR links, which makes it useful for 400G-to-8x 50G/25G breakout. Maximum power consumption is 12W, and the operating case temperature range is 0 to 70 C.

The module fits QSFP-DD ports on Arista platforms. The OSFP equivalent is OSFP-400G-SR8-C. Check Arista's Transceiver and Cable Guide for supported platforms and software versions.

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

Features

- 400GBASE-SR8 over parallel OM4 multimode fibre up to 100m
- SR8-C variant supports 8x 50G-SR / 25G-SR channelized operation
- QSFP-DD form factor for high-density 400G ports
- MPO-16 APC connector for parallel multimode fibre
- 850nm optics with per-lane transmit and receive power monitoring ranges
- Supports 400G-to-8x 50G/25G breakout deployments

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-SR8 and SR8-C
- Form factor: QSFP-DD
- Connector type: MPO-16 APC
- Wavelength: 850 nm
- Cable type: Parallel multimode fibre (OM3 / OM4)
- Core size: 50.0 um
- Modal bandwidth (OM3): 2000 MHzkm
- Modal bandwidth (OM4): 4700 MHzkm
- Tx power per lane: -6.5 to +4.0 dBm
- Rx power per lane: -8.4 to +4.0 dBm
- Max reach (OM3): 70 m
- Max reach (OM4): 100 m
- Maximum power consumption: 12 W
- Dimensions QSFP-DD Type 1 (H x W x D): 13.5 x 18.4 x 78.3 mm
- Dimensions QSFP-DD Type 2 (H x W x D): 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: 0-10,000 ft

FAQs

Q: What is the difference between the SR8-C and a standard 400G SR8 module?
A: The SR8-C variant also supports channelized operation as 8x 50G-SR / 25G-SR links, in addition to 400GBASE-SR8. This allows a single 400G port to break out into multiple lower-speed connections.

Q: What fibre and connector does it use?
A: It uses parallel multimode fibre with an MPO-16 APC connector. Reach is 70m over OM3 and 100m over OM4.

Q: What is the module's power consumption?
A: Maximum module power is 12W, which is the datasheet figure for the 400G QSFP-DD SR8 class of modules.

Q: Which ports does it fit?
A: It fits QSFP-DD ports on Arista platforms. The OSFP equivalent is OSFP-400G-SR8-C. Check Arista's Transceiver and Cable Guide for supported platforms and software versions.

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