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by Cisco
Product Line: Cisco Series
Product Type: Optical Transceiver
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Original price $0.00 - Original price $0.00
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Title: Surplus

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Product Description

The QSFP-100G-CWDM4-S Cisco transceiver delivers a high-speed 103.125 Gbps aggregated data rate with a maximum reach of 2 km on duplex single mode fiber, utilizing four wavelengths (1271 nm, 1291 nm, 1311 nm, and 1331 nm). It supports a broad operating temperature range from 0 °C to 70 °C and is equipped with digital diagnostic monitoring, a hot-pluggable 38-pin electrical interface, and a 2-wire I2C management interface. Designed for optimal performance in LAN, WAN, and Ethernet switches and routers, this transceiver ensures efficient power usage with a maximum dissipation of 1.5 W and operates reliably at altitudes up to 2000 m.

FAQs for the QSFP-100G-CWDM4-S

  • What is the line rate of the transceiver?
    • The line rate is 103.125 Gbps.
  • Can you specify the operating temperature range for this device?
    • Operating temperature ranges from 0 °C to 70 °C.
  • What is the maximum power dissipation of the transceiver?
    • Power dissipation is less than 3.5 W.
  • How is the transceiver powered?
    • It is powered by a single 3.3 V power supply.
  • What type of receptacle does the transceiver use?
    • It uses a Duplex Single Mode LC receptacle.
  • Does the transceiver support digital diagnostic monitoring?
    • Yes, it supports digital diagnostic monitoring.
  • What electrical interface does the transceiver utilize?
    • The transceiver utilizes a hot-pluggable 38-pin electrical interface.
  • What is the maximum storage temperature for the transceiver?
    • The maximum storage temperature is 85 °C.
  • What wavelength does the transceiver laser operate at?
    • The laser operates at wavelengths of 1271 nm, 1291 nm, 1311 nm, and 1331 nm.
  • What is the relative humidity range the transceiver can operate within?
    • The relative humidity range is 5% to 85% (non-condensing).

Product Review

The Cisco QSFP-100G-CWDM4-S transceiver offers a high data rate of 103.125 Gbps, supporting demanding applications in LAN, WAN, and network switches and routers, making it suitable for high-bandwidth connectivity. However, its channel insertion loss of up to 5 dB and a maximum link budget of 8 dB may limit its effectiveness over longer distances or in environments with significant signal attenuation. This model boasts low power dissipation, under 3.5W, and operates efficiently across a wide temperature range (0 °C to 70 °C), ensuring reliability and sustainability in various operational conditions.


The Cisco QSFP-100G-CWDM4-S is a high-performance transceiver designed for extensive networking applications including LAN, WAN, and connectivity within Ethernet switches and routers. With its advanced features and specifications, this transceiver streamlines operations and enhances network efficiency. At the core of its performance, the QSFP-100G-CWDM4-S supports a line rate of 103.125 Gbps, facilitating rapid data transmission that meets the demands of modern high-speed networks. The device operates over a wavelength range that includes 1271 nm, 1291 nm, 1311 nm, and 1331 nm, utilizing CWDM technology to optimize bandwidth and improve signal integrity over distances up to 2 km. Key hardware specifications include: - A channel insertion loss of up to 5 dB, ensuring minimal signal degradation over the maximum reach. - Power supply requirements are modest, with a single 3.3 V source and a supply current of 1118 mA. Power dissipation is efficiently managed, not exceeding 3.5 W to maintain operational efficiency and reliability. - For compatibility and ease of integration, the QSFP-100G-CWDM4-S features a hot-pluggable 38-pin electrical interface along with a duplex single-mode LC receptacle. This design facilitates straightforward installations and upgrades without disrupting active network operations. The transceiver is built to withstand a wide range of environmental conditions. It operates effectively within a temperature range from 0 °C to 70 °C and can be stored in temperatures ranging from -40 °C to 85 °C. Humidity tolerance is specified from 5% to 85% (non-condensing), ensuring reliable performance in various climatic conditions. Additionally, it is capable of functioning at altitudes up to 2000 m, offering flexibility for deployment in diverse geographical locations. Digital Diagnostic Monitoring (DDM) support is integrated, providing real-time access to device operating parameters such as temperature, laser bias current, transmitted optical power, received optical power, and transceiver supply voltage. This feature enables proactive maintenance and troubleshooting, enhancing network uptime. The QSFP-100G-CWDM4-S also emphasizes safety and durability, with a receiver damage threshold of 3.5 dBm maximum, safeguarding the device against potential optical power surges. The management interface, a 2-wire I2C, allows for efficient device monitoring and management, contributing to the overall ease of use. In summary, the Cisco QSFP-100G-CWDM4-S transceiver is a vital component for high-speed networking applications, offering: - High data rate transmission and CWDM technology for efficient bandwidth utilization. - Robust environmental tolerance, ensuring reliability across various operating conditions. - Comprehensive digital diagnostics for enhanced network management and maintenance. With these specifications, the Cisco QSFP-100G-CWDM4-S stands out as a key enabler of high-performance, reliable networking infrastructures, suitable for a wide range of applications in LAN, WAN, and Ethernet-powered networks.


Item Number Cisco QSFP-100G-CWDM4-S
Data Transmission Speed 103.125 Gigabits per second
Maximum Channel Loss 5 decibels
Lowest Operational Temp 0 degrees Celsius
Highest Operational Temp 70 degrees Celsius
Energy Consumption Less than 3.5 Watts
Electrical Supply Requirement 3.3 Volt single supply
Optical Interface LC duplex for single-mode fiber
DDM Capability Supported
Interface Type 38-pin hot-pluggable
Configuration Interface I2C 2-wire
Identification Color Green
Utilization Data centers, network equipment
Operating Current 1118 milliamps
Max Power Usage 1.5 Watts
Storage Temp Range Min -40 degrees Celsius
Storage Temp Range Max 85 degrees Celsius
Humidity Tolerance 5% to 85%, non-condensing
Effective Distance 2 kilometers
Optimal Link Budget 8 decibels
Total Bandwidth 103.13 Gigabits per second
Laser Emission Wavelengths 1271, 1291, 1311, and 1331 nanometers
Support for DDM Yes
Functional Applications Network connectivity for LAN, WAN
Service Altitude Limit Up to 2000 meters
Max Input Power Threshold 3.5 dBm

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