QSFP112 400G SR4 PAM4 850nm MMF MPO-12 APC Optical Transceiver Module
The 400G QSFP112 VCSEL/PIN 850nm transceiver is a high-performance, low-power optical module designed for short-reach 400G Ethernet applications in modern data centers. Utilizing a multi-mode fiber (MMF) infrastructure, it offers reliable transmission up to 50 meters over OM4 fiber, meeting the demands of high-density, low-latency networking environments.
Engineered with a proven VCSEL (Vertical-Cavity Surface-Emitting Laser) and PIN photodiode architecture operating at 850nm, this module delivers excellent signal integrity, power efficiency, and thermal stability. The module conforms to QSFP112 MSA standards and supports 4x100G PAM4 signaling for seamless integration into high-speed switches, routers, and server interconnects.
| Part Number | GL4H-Q1MM85SR4C | Tx Power (dBm) | -4.6~4 |
| Product | 400G Q112 SR4 | Rx Power (dBm) | -6.4 |
| Max Data Rate | 425Gbps (4×106.25Gb/s) | Distance | 30m OM3 / 50m OM4 |
| Wavelength | 850nm | Connector | MPO-12/APC |
| Laser Type (TX/RX) | VCSEL/PIN | Temp | 0~70°C |
400G data center interconnects
Switch-to-switch and server-to-switch connectivity
Cloud infrastructure and high-density racks
AI/ML clusters and hyperscale deployments
Data Rate: 400Gbps (4x100G PAM4)
Wavelength: 850nm VCSEL
Reach: Up to 50m over OM4 MMF
Interface: MPO-12/APC connector
Power Consumption: ≤ 8W
Form Factor: QSFP112
Protocols: IEEE 802.3db, CMIS 5.0, QSFP112 MSA
Digital Diagnostics Monitoring (DDM) included
Operating Temperature: 0°C to 70°C
FAQ About 400G Q112 SR4 Optical Transceiver Module
Yes, this IEEE 802.3db compliant 400G QSFP112 VCSEL transceiver adheres to IEEE 802.3db, QSFP112 MSA, and CMIS 5.0 specifications to ensure compatibility with major platforms.
With a power consumption of ≤8W, the low-power 400G QSFP112 transceiver ≤8 W supports energy-efficient operation while delivering high bandwidth over short-reach MMF links.
Yes, this QSFP112 VCSEL PIN digital diagnostics monitoring module includes full DDM support for real-time monitoring of temperature, voltage, laser bias, and optical power levels.
The QSFP112 4×100G PAM4 VCSEL PIN transceiver for OM4 offers reliable transmission up to 50 meters, making it well-suited for dense deployments in modern data centers using OM4 MMF.
The 400G QSFP112 VCSEL/PIN 850 nm 50 m optical transceiver module is ideal for high-speed, short-reach data center applications such as server-to-switch links, spine-leaf architectures, and cloud interconnects using OM4 multimode fiber.
