NOKIA 3HE19473AA 100G QSFP28 PSM4 Optical Transceiver

Move aggregate 100 Gigabit Ethernet traffic across parallel single-mode fiber with a QSFP28 PSM4 optical interface built around four 25G electrical and optical lanes. The PSM4 architecture uses parallel optics rather than wavelength multiplexing, making it appropriate where the installed fiber plant and port design support 4 x 25G lane operation. Its specified optical reach is up to 2 km, covering many data-center interconnect, aggregation, and campus backbone runs. NOKIA 3HE19473AA provides a QSFP28-form-factor 100G optical connection for equipment that accepts PSM4 media. The module operates from 0–70 °C, placing it in the commercial-temperature range used by climate-controlled equipment rooms, racks, and data centers. Match the transceiver type at both ends of the link and ensure the structured cabling path supports the parallel-fiber requirements of PSM4 optics. Within the 100G QSFP28 optical category, this version is defined by its PSM4 signaling, four 25G lanes, and 2 km reach. Those characteristics distinguish it from 100G optics that use duplex-fiber wavelength multiplexing or shorter-reach parallel-optic links. It is intended for a 100G port needing a parallel single-mode optical path rather than a copper direct-attach connection.