QDD-400G-FR4A Juniper Compatible 400G QSFP-DD FR4 2km SMF Transceiver

The QDD-400G-FR4A is a 400G QSFP-DD optical transceiver engineered as a drop-in equivalent for Juniper platforms.

• Form Factor: QSFP-DD
• Data Rate: 400G
• Protocol: FR4
• Fiber Type: SMF
• Reach: 2km
• Connector: Duplex LC
• OEM Equivalent: QDD-400G-FR4A

Compatibility: The QDD-400G-FR4A-TFO is TenFour Optics' compatible equivalent of the Juniper QDD-400G-FR4A, coded per order for Juniper platforms. Juniper lists the QDD-400G-FR4A for use in 400G QSFP-DD ports on: ACX7100 (ACX Series), MX10004/MX10008 (MX Series), PTX10000 Series, QFX5130 Series, QFX5220 Series, and QFX5700 Series. To confirm fit for a specific line card or OS release, email 10.4@tenfouroptics.com.

Tested & Proven: Every TenFour Optics part is coded, tested, and verified before shipment — see Tested & Proven.

It is qualified against Juniper host platforms and tested end to end so it behaves exactly as the OEM module it replaces, slotting into existing designs without surprises. The result is a like-for-like swap that protects the original network design while removing OEM-optics cost from the bill of materials. It operates 2km.

Coded to the host EEPROM, it provides full diagnostic visibility.

We program each module to the Juniper host EEPROM and run it through traffic, DOM, and optical-cleanliness checks before it ships. Compliance documentation (RoHS declaration, IEC 60825-1 laser classification) is available on request for project quotes.

Backed by the GreenLights4Life® Limited Lifetime Replacement Warranty. In-stock items ship same or next business day.