SFP-10G-ZR-I-BCC | Cisco Compatible 10GB Single-Mode ZR - 70km (10GBASE-ZR) Rugged / Industrial

Q: Will this work in place of the Cisco SFP-10G-ZR-I?
A: Yes. The SFP-10G-ZR-I-BCC is a direct plug-and-play replacement for the Cisco SFP-10G-ZR-I. It supports the same multirate protocols (10GBASE-ZR, 10GBASE-ZW, OTU2/OTU2e), 70km reach at 1550nm, and -40°C to 85°C industrial temperature range. The limiting electrical interface receiver is compatible with any SFP+ port without requiring an EDC PHY on the host board.

Q: Which Cisco platforms support this industrial-temperature transceiver?
A: This transceiver works in any Cisco platform with an SFP+ port that supports industrial-temperature optics. Common applications include industrial Ethernet switches, ruggedized routers for utilities and transportation, and outdoor network equipment. Verify compatibility for your specific model via the Cisco 10 Gigabit Ethernet Transceiver Modules Compatibility Matrix, as not all platforms support the full industrial temperature range.

Q: What fibre attenuation is required for links shorter than 70km?
A: For links under 40km, you must install an inline optical attenuator to prevent receiver overload and damage. Cisco specifies a 5dB attenuator for links under 20km. At very short distances (under 5km), higher attenuation may be required. The receiver has an overload threshold of approximately -7dBm, while the transmitter outputs 0 to +4dBm, creating a significant power budget that requires management on short spans.

Q: How does the cold-start temperature behaviour affect deployment?
A: From -40°C to -28°C, the transceiver powers on and provides access to DOM parameters and I2C communication, but does not support optical traffic. Full 10G transmission becomes available once the module reaches -28°C. This cold-start design protects the laser and receiver during extreme cold while allowing environmental monitoring and remote diagnostics before the link becomes operational, which is useful for outdoor cabinets in Arctic or high-altitude installations.

Q: What is the significance of the limiting electrical interface receiver?
A: The limiting electrical interface means this transceiver performs clock and data recovery internally and outputs a clean retimed signal to the host. It does not require an electronic dispersion compensation (EDC) PHY on the host board, unlike some long-reach optics. This simplifies integration into industrial switches and routers that may lack advanced SerDes equalization, and ensures compatibility across a wider range of SFP+ host platforms without platform-specific signal conditioning.