400GBASE-DR4+ OSFP112 Optical Module: 400G-OSFP112-2
400G OSFP112 DR4+ 2km Transceiver Overview
The 400G-OSFP112-2 is an OSFP112 module for 400GBASE-DR4-2, the 2 km single-mode parallel application standardized in IEEE Std 802.3df-2024, Clause 124, and widely marketed as 400GBASE-DR4+. It carries 400 Gbps over an MTP/MPO-12 APC connector across 8 single-mode fibers. Built on a native 400GAUI-4 electrical interface and 112G-class SerDes lanes, the module needs no electrical gearbox between the host ASIC and the optical engine. It shares its core optical architecture with the family's 500 m 400GBASE-DR4 sibling, differing mainly in reach and link budget. The flat-top OSFP112 housing, PIN photodiode receiver, and DDM/DOM diagnostics support standard OSFP112 deployments on 400G Ethernet fabrics terminating on native 112G-SerDes hosts.
- Media Type: 4 Lanes of Single-Mode Fiber (SMF)
- Connector: MTP/MPO-12 (APC)
- Fiber Count: 8 Fibers
- Maximum Distance: 2 km
- Average Link Budget: 4 dB
- Tx Wavelength: 1310 nm
- Supported Data Rate: 425 Gbps
- DDM/DOM: Supported
- Forward Error Correction (FEC): Host FEC Supported
- Temperature Range: Standard 0°-70°C
400G OSFP112 DR4+ Pricing
SKU:400G-OSFP112-2
In Stock - Ships Next Business Day400GBASE-DR4+ OSFP112 Optical Module Specification
Form Factor | OSFP112 |
Modulation | PAM4 (Pulse Amplitude Modulation 4-level) |
Media Type | 4 Lanes of Single-Mode Fiber (SMF) |
Connector | MTP/MPO-12 (APC) |
Fiber Count | 8 Fibers |
Maximum Distance | 2 km |
Average Link Budget | 4 dB |
Minimum Optical Budget (OMA) | 4.4 dB |
TX Wavelength | 4x1310 nm |
RX Wavelength | 4x1310 nm |
Supported Data Rate | 425 Gbps |
Supported Ethernet Applications | 400G Ethernet (425 Gbps) |
DDM/DOM | Supported |
Forward Error Correction (FEC) | Host FEC Supported |
Average Launch Power (Min) Each Lane | -3.1 dBm |
Average Launch Power (Max) Each Lane | 4 dBm |
Extinction Ratio (Min) | 3.5 dB |
Receiver Type | PIN photodiode |
Average Receiver Sensitivity (Min) Each Lane | -7.1 dBm |
Average Receiver Sensitivity (Max) Each Lane | 4 dBm |
Receiver Overload | 5 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power Consumption (Max) | 10 W |
Power | +3.3V single power supply |
Compliance | CE, RoHS, Class 1 FDA and IEC60825-1 Laser Safety Compliant, OSFP MSA |
Electrical Interface | 400GAUI-4 (4x106.25G PAM4) |
Top Type | Flat-Top (RHS) |
400GBASE-DR4+ OSFP112 Optical Module Datasheet
v2Complete technical specifications and product details
400GBASE-DR4+ OSFP112 Optical Module Description
The 400G-OSFP112-2 is an OSFP112 transceiver for 400GBASE-DR4-2, the 2 km parallel single-mode application standardized in IEEE Std 802.3df-2024, Clause 124, commonly marketed as 400GBASE-DR4+. It uses a native 400GAUI-4 electrical interface on 112G-class SerDes lanes, with no gearbox between host ASIC and optical engine, in a flat-top OSFP112 housing.
Four lanes of PAM4 modulation run at 1310 nm (single wavelength, not CWDM) over an MTP/MPO-12 APC connector with 8 single-mode fibers, for links to 2 km. Average launch power per lane is −3.1 to 4 dBm, minimum extinction ratio 3.5 dB. Receiver sensitivity per lane averages −7.1 to 4 dBm on a PIN photodiode, with a 5 dBm overload point. Average link budget is 4 dB, minimum optical budget (OMA) 4.4 dB.
Electrically the module presents 400GAUI-4 (4x106.25G PAM4), native to the 112G-class SerDes host with no gearbox stage. Host FEC is required, consistent with the Host FEC Supported designation, and CDR is included. DDM/DOM diagnostics report per-lane optical power, bias current, and temperature.
The 400G-OSFP112-2 shares its optical architecture (four 1310 nm PAM4 lanes, MTP/MPO-12 APC, 8 fibers) with the family's 500 m 400GBASE-DR4 sibling, differing mainly in reach and link budget: this 2 km application carries a 4 dB average link budget (4.0 dB maximum insertion loss) versus a 3 dB average link budget on the 500 m DR4 sibling, to cover the longer reach. Per IEEE 802.3df task force guidance, the two PMDs can interoperate if the fiber cabling meets the shorter DR4 channel characteristics; verify the fiber plant against the reach class required.
Operating temperature is rated 0 to 70 °C, storage −40 to 85 °C, and 5 to 85% relative humidity. Power draw is bounded at 10 W from a single +3.3 V supply. It is certified to CE and RoHS, Class 1 laser safety under FDA and IEC 60825-1, and follows the OSFP MSA form factor.
Ships next business day from EU stock with a lifetime warranty. Backed by EDGE Optical Solutions' compatibility engineering across vendor optical platforms. For project quantity pricing or deployment questions, contact our sales team.
Frequently Asked Questions
Is 400GBASE-DR4+ an official IEEE standard?
Yes. The 2 km parallel single-mode application marketed as 400GBASE-DR4+ is standardized as 400GBASE-DR4-2 in IEEE Std 802.3df-2024, Clause 124. DR4+ is the common trade name used across the OSFP and QSFP-DD ecosystem for that standardized application, not a separate MSA-only extension.
What is the difference between this DR4+ (2 km) module and the family's DR4 (500 m) module?
Both modules use the same four-lane, 1310 nm PAM4 architecture with an MTP/MPO-12 APC connector over 8 single-mode fibers. The DR4+ module (400GBASE-DR4-2) targets 2 km with a larger 4 dB average link budget to cover the extended reach, versus a 3 dB average link budget on the family's 500 m DR4 sibling.
Is 400GBASE-DR4+ interoperable with a standard 500 m DR4 link?
Per IEEE 802.3df task force guidance, 400GBASE-DR4 and 400GBASE-DR4-2 PMDs can interoperate, provided the fiber cabling meets the shorter DR4 (500 m class) channel characteristics. Verify the deployed fiber plant against the reach class actually needed before mixing DR4 and DR4+ endpoints on the same link.
Does this module require host FEC?
Yes. The module is designated Host FEC Supported, so the host device supplies the forward error correction needed for the 400GBASE-DR4-2 link.