155m Optical Module Model Description
Supports up to 155Mbps bit rates Hot-pluggable SFP footprint 1310nm FP laser and PIN photo detector, Up to 20km for SMF transmission Compliant with SFP MSA and SFF-8472 with single LC receptacle Compatible with RoHS Single +3. The SFP-155M transceiver family are small form factor pluggable modules for bi-directional serial optical data communications such as SONET/SDH OC-3/STM-1 or Fast Ethernet. Starting from V800R025C00SPC500, this optical module supports three interface modes: STM1, STM4, and STM16. The 155M DDM SFP Module offers Digital Diagnostic Monitoring (DDM) for real-time performance monitoring and troubleshooting. Despite the dominance of Gigabit and 10G optics, 155M SFP modules are still actively purchased today —not as legacy leftovers, but as deliberate, cost-efficient. Supporting 2km transmission over multimode fiber at 1310nm wavelength, this dual-rate 100/155M SFP module provides 14 dB link budget with speeds from 100-155Mbps.
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