TQ-BL859140-SRC 40GBASE-SR SWDM4 QSFP+ BiDi 850/880/910/940nm 300m Duplex LC/UPC MMF Transceiver Module

Trxcom TQ-BL859140-SRC 40GBASE-SR SWDM4 Bi-Directional QSFP+ Optical Transceiver Module (MMF, 850/880/910/940nm, 300m, LC, DOM)

The Trxcom TQ-BL859140-SRC 40GBASE SWDM4 Bi-Directional QSFP+Transceiver enables 40G Ethernet transmission over duplex multimode fiber (MMF), allowing reuse of existing LC fiber infrastructure without additional cabling. It uses SWDM4 technology to transmit 40G signals over four wavelengths (850nm, 880nm, 910nm, and 940nm) through a single duplex LC interface, eliminating the need for parallel fiber links and significantly reducing cabling complexity and deployment cost. The module supports transmission distances of up to 300m on OM3, 400m on OM4, and 500m on OM5 laser-optimized multimode fiber, providing a smooth migration path from 10G to 40G while preserving existing fiber infrastructure investments. It supports Digital Optical Monitoring (DOM) for real-time diagnostics and complies with QSFP+ MSA and IEEE 802.3ba standards.

Ideal deployment scenarios include fiber-constrained data centers, high-density spine-leaf architectures, campus network upgrades, and environments that require extended multimode reach without migrating to single-mode fiber.

Note: This module uses 4-channel SWDM4 technology (850/880/910/940nm) and is not interoperable with traditional BiDi/SRBD modules (850/900nm). Both ends of the link must use SWDM4 transceivers.

Quality Certifications

We strictly control product quality, including strict control of manufacturer qualifications, quality control processes and production process standards, and compliance with various certifications and safety standards. Currently, our products comply with industry standards and mainstream quality certifications, such as ISO 9001, ISO 14001, CE, RoHS, REACH, UL, etc. For more details, please visit the Compliance Center Center to get documents.

Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.