
The Arista Compatible 400G OSFP FR4 Optical Transceiver is a hot-pluggable Single-port OSFP IHS/Finned Top transceiver rated at 400Gbps. Using a Duplex LC/UPC optical interface over SMF at 1271nm,1291nm,1311nm,1331nm, it covers transmission distances up to 2km. Compliance with OSFP MSA 5.1,CMIS 4.0,IEEE 802.3cu,IEEE 802.3bs, together with integrated diagnostic monitoring, makes it a dependable choice for 400G Ethernet data centers, HPC and machine learning clusters.
Product Highlights
- Single-port OSFP IHS/Finned Top form factor, 400Gbps data rate
- Wavelength: 1271nm,1291nm,1311nm,1331nm
- Connector: Duplex LC/UPC
- Reach: up to 2km
- Fiber media: SMF
- DDM/DOM: Supported
Specifications
| Arista Networks Compatible | OSFP-400G-FR4 |
|---|---|
| Manufacturer | HT |
| Form Factor | Single-port OSFP IHS/Finned Top |
| Max. Data Rate | 400Gbps |
| Wavelength | 1271nm,1291nm,1311nm,1331nm |
| Max. Cable Distance | 2km |
| Connector | Duplex LC/UPC |
| Media | SMF |
| Transmitter Type | CWDM EML |
| Receiver Type | PIN |
| TX Power | -3.2~4.4dBm |
| Minimum Receiver Power | -7.2dBm |
| Power Budget | 4dB |
| Receiver Overload | 4.4dBm |
| Max. Power Consumption | 10W |
| Extinction Ratio | 3.5dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 8x50G-PAM4 |
| Modulation (Optical) | 4x100G-PAM4 |
| CDR (Clock and Data Recovery) | TX & RX Built-in DSP |
| Inbuilt FEC | Yes |
| Modulation Format | PAM4 |
| Packaging Technology | COB |
| Protocols | OSFP MSA 5.1,CMIS 4.0,IEEE 802.3cu,IEEE 802.3bs |
Applications
The Arista Compatible 400G OSFP FR4 Optical Transceiver is used in 400G Ethernet data centers, HPC and machine learning clusters, where it provides a 400Gbps link over SMF up to 2km. The Duplex LC/UPC interface and 1271nm,1291nm,1311nm,1331nm optics match the standard cabling plant used in modern data halls, so existing trunks can be reused. Compatibility with Arista Networks systems is verified in our own test lab before shipment, so the unit works out of the box as an equivalent of OSFP-400G-FR4. The link runs PAM4 modulation, which keeps it aligned with current 400G switch silicon.
Standards and Compatibility
Compliance: OSFP MSA 5.1,CMIS 4.0,IEEE 802.3cu,IEEE 802.3bs. For projects standardized on Arista Networks hardware, this product replaces the OSFP-400G-FR4 directly, with identical fit and function. Every unit's EEPROM coding and link behavior are verified on real host equipment in our lab, so what arrives at your site is ready to use.
Ordering Information
To order, quote OSFP-FR4-400G together with your quantity. Stock items ship quickly; for OEM orders we support custom labels, retail packing and vendor-specific coding, all handled in our own factory.
Packaging
Each unit is sealed in an anti-static bag, cushioned in a blister tray and boxed in an export-grade carton. Outer cartons carry handling marks and can be palletized for air or sea freight. If your project requires retail boxes, barcodes or your own brand on the label, we can arrange that as well.
OEM and Custom Orders
We have manufactured fiber optic connectivity products since 1995 and run our own production lines in Shenzhen. Beyond the standard catalog we build to order: special cable lengths, custom connector combinations, vendor-specific compatibility coding and private labeling. Send us your requirement and our engineers will quote a practical solution.
Logistics
Our warehouse keeps fast-moving transceivers and cables ready for same-week dispatch. Courier, air freight and sea freight options are all available depending on your budget and schedule, and we consolidate multiple items into one shipment whenever it saves you cost.
Our Testing Process
Production samples and every outgoing batch pass through bit-error-rate measurement, temperature verification and plug-in compatibility checks on mainstream switches and routers. Because we are the manufacturer, any issue found in testing is fed back to the production line immediately instead of being passed on to customers.



