Source Photonics SPQ-CE-LR-IDFF Compatible 100G 10KM SMF QSFP28

EdgeOptic's SPQ-CE-LR-IDFF compatible is a Source Photonics-coded 100GBASE-LR4 QSFP28 transceiver built on the EdgeOptic 100G-QSFP28-10 platform, rated for industrial-temperature operation. The 'I' prefix in the IDFF suffix identifies the industrial-grade case temperature window, which is the key differentiator from the commercial-temperature SPQ-CE-LR-CDFF sibling. Both modules carry the same Source Photonics vendor identity in the EEPROM and the same 100GBASE-LR4 optical interface; the temperature class is what selects between them on a procurement BOM.

Operating case temperature is -40 to +85°C, suited for outside-plant cabinets, mobile cell sites, transportation tunnels, industrial control networks, and unconditioned-shelter data extensions where the commercial -CDFF variant is not rated to operate. The optical interface follows IEEE 802.3ba Clause 88 100GBASE-LR4 with QSFP28 MSA management per SFF-8665 and SFF-8636. Four NRZ lanes on the LAN WDM grid at 1295.56, 1300.05, 1304.58, and 1309.14 nm multiplex onto a single LC duplex pair of G.652 single-mode fiber at an aggregate 103.125 Gbps line rate.

A 6.3 dB optical path loss budget supports the full 10 km reach over single-mode fiber. The module operates on a single 3.3 V supply per the QSFP28 MSA and reports DDM telemetry per SFF-8636 for tx power, rx power, bias current, supply voltage, and case temperature. Source Photonics MSA coding means the module presents a generic vendor identity rather than a host-specific OEM string, so acceptance depends on the host platform's third-party-optic policy. EdgeOptic's compatible carries the SPQ-CE-LR-IDFF ordering code so chassis inventory output and procurement records stay consistent with the part number called out in the equipment configuration.

Don't confuse the SPQ-CE-LR-IDFF with the SPQ-CE-LR-CDFF: the 'I' versus 'C' suffix is the industrial versus commercial temperature differentiator. Both modules share the same 100GBASE-LR4 optical specification, the same LAN-WDM wavelength plan, and the same 10 km reach. Match the exact ordering code on the equipment label or in the equipment compatibility list before placing a replacement order; an industrial-temperature site populated with commercial-grade optics can fail intermittently as case temperature swings beyond the commercial range. RoHS compliant per EU Directive 2011/65/EU.

Verify the entry for your specific NIC, switch, or router in the vendor's transceiver compatibility matrix before deployment. Ships next business day from EU stock with a lifetime warranty. Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms. For volume orders, custom EEPROM programming, or pre-sales engineering questions, contact our sales team.