400G QSFP112 FR4 Optical Transceiver

Designed for 400G Ethernet data center and cloud network environments, the 400G QSFP112 FR4 Optical Transceiver provides 425Gbps (4x 106.25Gbps) throughput in a QSFP112 form factor. It operates at 1310nm over SMF through a Duplex LC/UPC connector and supports link lengths up to 2km. The module meets QSFP-112 MSA, CMIS Rev 4.0, IEEE 802.3cu, OIF-CEI-112G-VSR-PAM4 and includes digital diagnostic monitoring for live status readout.

Product Highlights

QSFP112 form factor, 425Gbps (4x 106.25Gbps) data rate
Wavelength: 1310nm
Connector: Duplex LC/UPC
Reach: up to 2km
Fiber media: SMF
DDM/DOM: Supported

Specifications

Part Number	QSFP112-FR4-400G
Manufacturer	HT
Form Factor	QSFP112
Max. Data Rate	425Gbps (4x 106.25Gbps)
Wavelength	1310nm
Max. Cable Distance	2km
Connector	Duplex LC/UPC
Media	SMF
Transmitter Type	EML
Receiver Type	PD
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)	4x100G-PAM4
Modulation (Optical)	4x100G-PAM4
Core Size	9μm
Packaging Technology	COB
Protocols	QSFP-112 MSA, CMIS Rev 4.0, IEEE 802.3cu, OIF-CEI-112G-VSR-PAM4

Applications

Built for 400G Ethernet data center and cloud network environments, this QSFP112 module carries 425Gbps (4x 106.25Gbps) over SMF up to 2km per link. The Duplex LC/UPC interface and 1310nm optics match the standard cabling plant used in modern data halls, so existing trunks can be reused. If your project needs a specific vendor coding or custom label, our production line handles it as a routine step before packing. The link runs 4x100G-PAM4 modulation, which keeps it aligned with current 400G switch silicon.

Standards and Compatibility

Compliance: QSFP-112 MSA, CMIS Rev 4.0, IEEE 802.3cu, OIF-CEI-112G-VSR-PAM4. 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

Our part number for this module is QSFP112-FR4-400G. When ordering, just let us know the quantity and whether you need the compatibility coding for a particular switch brand; labeling and packaging can also follow your channel requirements.

Quality and Testing

Every unit we ship is tested in our own test bed on mainstream switch and transport platforms before packing. Our test center has been fully upgraded, which sets us apart from other third party product providers: 10G, 40G, 100G, 200G and 400G transceivers and direct attach cables are verified on the latest top brand equipment, including selected original switches that can hardly be found elsewhere.

How We Pack

Transceivers and cables are individually protected against static and dust, then consolidated into sturdy cartons suitable for international courier shipment. For larger orders we shrink-wrap and strap cartons onto pallets. Tell us your warehouse or retail requirements and we will pack accordingly.

Built to Your Spec

Our product line has grown with the industry for three decades, from GBIC-era modules to today's 800G and 1.6T interconnects. If the exact configuration you need is not listed, we can usually build it: custom lengths, mixed connector breakouts, OEM branding and project-specific firmware coding are all supported.

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.