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by Cisco
Product Line: Cisco ONS Series
Product Type: DWDM SFP Module
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Product Description

The ONS-SC-2G-51.7 is a Cisco networking component with a specific wavelength of 1551.72 nm, designed to transmit data efficiently over optical fibers. It supports a broad receiver wavelength range from 1260 nm to 1620 nm, ensuring compatibility with various fiber optic technologies and adheres to the ITU G694 and GR2918 standards. This device boasts a minimum transmit power of 0 dBm and a maximum of 4 dBm, alongside a high MTBF (Mean Time Between Failures) of 5,346,554 hours, indicating a reliable performance in environments between 0 °C and 70 °C.

FAQs for the ONS-SC-2G-51.7

  • What is the operating wavelength for this device?
    The operating wavelength is 1551.72 nm.
  • What type of cable connection is supported by part number?
    It supports an LC-LC cable connection.
  • Can you specify the transmitter stability range?
    The transmitter stability ranges from -100 pm (low range) to +100 pm (high range).
  • How much power does the part number consume at maximum?
    The maximum power consumption is 1 W.
  • What is the spectral width of the device?
    The spectral width is 200 pm.
  • What are the minimum and maximum operating temperatures for the part number?
    The minimum operating temperature is 0 °C, and the maximum is 70 °C.
  • What is the minimum transmit power the device can achieve?
    The minimum transmit power is 0 dBm.
  • What are the receiver wavelength specifications for the part number?
    The minimum receiver wavelength is 1260 nm, and the maximum is 1620 nm.
  • What is the MTBF (Mean Time Between Failures) for this device?
    The MTBF is 5,346,554 hours.
  • Which standards does the part number comply with?
    It complies with ITU G694 and GR2918 standards.

Product Review

The CISCO ONS-SC-2G-51.7 offers a broad receiver wavelength range from 1260 nm to 1620 nm, accommodating various optical networking needs, and an impressive MTBF of over 5 million hours, indicating high reliability. However, its transmitter stability varies by ±100 pm, potentially affecting performance in highly sensitive applications. Additionally, with a spectral width of 200 pm and power consumption capped at 1 W, it balances efficiency with functionality, albeit the transmitter power range of 0 dBm to +4 dBm may limit output in certain scenarios.


The CISCO ONS-SC-2G-51.7 is a specialized module designed for high-capacity, long-reach optical networking. This module is engineered to transmit data over a wavelength of 1551.72 nm, targeting efficiency and reliability in optical communication. It is compatible with a range of receiver wavelengths from 1260 nm to 1620 nm, ensuring versatility in network deployment and compatibility with various fiber optic infrastructures. With a focus on maintaining signal integrity, the transmitter stability is maintained within a range from -100 pm to +100 pm, ensuring precise signal delivery and reception over long distances. The spectral width of 200 pm further underscores the module's capability to deliver high-quality signals without degradation over extended networks. This precision is critical in minimizing errors and maintaining the integrity of data transmission across the network. The module's power output is finely tuned for optimal performance, with a minimum transmit power of 0 dBm and a maximum of 4 dBm. This range is designed to ensure efficient signal propagation without overloading the network or causing unnecessary signal noise. The maximum power consumption of the module is limited to 1 W, highlighting the device's efficiency and its contribution to reducing the overall energy footprint of the networking infrastructure. Durability and reliability are key attributes of the CISCO ONS-SC-2G-51.7, as evidenced by its mean time between failures (MTBF) of 5,346,554 hours. This impressive MTBF indicates a low failure rate, ensuring network stability and reducing maintenance costs over the product's lifespan. The module supports LC-LC cable connections, offering a secure and reliable means of integrating into existing network infrastructures.
  • Applicable to ITU G694 and GR2918 standards, the module meets rigorous international specifications for optical networking.
  • Designed to operate within a wide range of temperatures, from 0 °C to 70 °C, the module is suitable for various environmental conditions, ensuring reliability across different climates.
  • The module's hardware specifications are tailored to facilitate seamless integration and optimal performance in sophisticated optical networks.
In summary, the CISCO ONS-SC-2G-51.7 is engineered to meet the demands of modern optical networks, offering precise wavelength transmission, stability, and power efficiency. Its compatibility with a broad spectrum of receiver wavelengths and adherence to international standards make it a versatile choice for expanding or upgrading optical communications infrastructures. With a focus on efficiency, reliability, and durability, this module represents a strategic investment for enterprises looking to optimize their optical network performance and longevity.


Part Number CISCO ONS-SC-2G-51.7
Manufacturer CISCO
Operational Wavelength 1551.72 nm
Lowest Receiver Wavelength 1260 nm
Highest Receiver Wavelength 1620 nm
Low-End Transmitter Stability -100 pm
High-End Transmitter Stability +100 pm
Emission Bandwidth 200 pm
Minimum Output Power 0 dBm
Peak Output Power 4 dBm
Mean Time Between Failures (MTBF) 5,346,554 Hours
Maximum Electrical Power Use 1 W
Cable Connection Type Supported LC-LC
Compliance ITU G694, GR2918
Minimum Temperature for Operation 0 °C
Maximum Temperature for Operation 70 °C

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