FTLC9558REPM-1T Finisar Compatible 100GBASE-SR4 QSFP28 Transceiver

EdgeOptic's FTLC9558REPM-1T compatible is a Finisar-coded 100GBASE-SR4 version of the EdgeOptic 100G-QSFP28-100 multi-vendor short-reach transceiver, one universal QSFP28 module coded for a range of switch and router vendors. It carries 100G Ethernet over four parallel 850 nm VCSEL lanes at 25G each across multimode fiber, terminated on an MTP/MPO-12 (UPC) connector using 8 active fibers, 4 transmit and 4 receive. The transceiver port is female (unpinned); the patch cable is the pinned male side, so a transceiver-to-transceiver link uses a male-to-male Type B MPO cable. Reach is 70 m over OM3 and 100 m over OM4, per IEEE 802.3bm Clause 95.

Optical specifications include a 1.9 dB average link budget, receiver sensitivity of −10.3 dBm per lane, and NRZ modulation, with no FEC required at this reach. The transmitter uses 850 nm VCSEL lasers; the receiver is a PIN photodiode. OM4 supports the full 100 m while OM3 is rated to 70 m, with achievable distance depending on patch panels, splices, and connector cleanliness in the installed link. DDM/DOM is supported, so the host can read live optical power, temperature, bias, and voltage. The module operates across the 0°C to 70°C commercial temperature range and is compliant with the QSFP28 MSA and SFF-8665. This is a 100G Ethernet short-reach optic; it does not carry Fibre Channel, OTN, or SONET traffic.

The -1T suffix is Finisar's TAA-compliant ordering code for US Government and federal procurement; it is optically and electrically the same Gen3 100GBASE-SR4 optic as the standard FTLC9558REPM. EdgeOptic codes this compatible with Finisar-recognized EEPROM, so it presents as the original module on host platforms that accept Finisar-coded optics; confirm the specific switch model and line card against the vendor transceiver compatibility matrix before deployment. For procurement that requires a TAA-designated build, our sales team can advise on the available ordering options. Typical roles include data center core interconnects, ISP aggregation, and mobile operator core networks.

Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms. Ships next business day from EU stock with a lifetime warranty. For project pricing or technical consultation, contact our sales team.