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Delivered stable 100G CWDM4 performance over 2km SMF.
QSFP-100G-CWDM4-S=
100GBASE CWDM4 QSFP TRANSCEIVER LC 2KM OVER SMF
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Name:
QSFP-100G-CWDM4-S=
- Description:
- 100GBASE CWDM4 QSFP TRANSCEIVER LC 2KM OVER SMF
- Rating:
Added to cart 28 times recently
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In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 662609657322
- Condition:
- Warranty:
- 3
- List Price:
$17,691.00
- Price:
$4,621.0073.9% off
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1
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QSFP-100G-CWDM4-S= Overview
QSFP-100G-CWDM4-S= is a QSFP transceiver module engineered for high-speed, 100G Ethernet applications. It employs LC optical connectors and leverages the CWDM4 transmission technique over single-mode fiber to support short-range data communications, making it an ideal solution for data centers, enterprise interconnects, and telecom network deployments.
QSFP-100G-CWDM4-S= features a compact QSFP form factor with industry-standard physical dimensions, ensuring seamless integration into modern networking equipment. Designed to meet rigorous performance and reliability standards, this transceiver supports Ethernet protocols and is optimized for applications that demand efficient, high-bandwidth, and reliable communication over distances up to 2 km.
QSFP-100G-CWDM4-S= price is $4,621.00, a 73.9% saving from the Cisco list price of $17,691.00. QSFP-100G-CWDM4-S= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QSFP-100G-CWDM4-S= for additional pricing. Browse the full Cisco 100G Optical Modules series or explore all Cisco products.
QSFP-100G-CWDM4-S= Specifications
- Product Type
- Transceiver
- Connector Type
- LC
- Transmission Distance
- Short-Range
- Supported Protocols
- Ethernet
- Network Interface
- Fiber
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco / Juniper / Huawei / Arista
- Fiber Type
- Single-mode
- Weight
- 0.07 lbs
- Form Factor
- QSFP
- Height
- 0.35 inches
- Data Rate
- 100G
- Power Consumption
- 6.0W
- Max Distance
- 2km
- Wavelength
- CWDM4 (1270nm-1330nm)
- Product Name
- QSFP-100G-CWDM4-S=
- Width
- 3.46 inches
- Depth
- 3.00 inches
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| QSFP-100G-CWDM4-S= |  CPAK-100G-PSM4= |  QSFP-100G-FR-S= |  CPAK-10X10G-ERL= |  CPAK-100G-ER4L= | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | QSFP | QSFP | QSFP28 | QSFP+ | QSFP28 |
| Data Rate | 100G | 100G | 100G | 10G | 100G |
| Connector Type | LC | LC | LC | LC | LC |
| Wavelength | CWDM4 (1270nm-1330nm) | 1310nm | 1310 nm | 1310 nm | 1310 nm |
| Transmission Distance | Short-Range | Short-Range | Long-Range | Long-Range | Long-Range |
| Fiber Type | Single-mode | Single-mode | Single-mode | Single-mode | Single-mode |
| Max Distance | 2km | 500 meters | 2000 meters | 80 km | 40 km |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Network Interface | Fiber | Ethernet | Fiber | Ethernet | Fiber |
| Power Consumption | 6.0W | 8.5W | N/A | N/A | N/A |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista |
| Product Name | QSFP-100G-CWDM4-S= | CPAK-100G-PSM4= | QSFP-100G-FR-S= | CPAK-10X10G-ERL= | CPAK-100G-ER4L= |
| Height | 0.35 inches | 0.65 inches | N/A | N/A | N/A |
| Width | 3.46 inches | 0.80 inches | N/A | N/A | N/A |
| Depth | 3.00 inches | 0.95 inches | N/A | N/A | N/A |
| Weight | 0.07 lbs | 0.25 lbs | N/A | N/A | N/A |
Reviews & Ratings
W
Wesley Norton
5
Strong optical stability and clean LC connectivity.
X
Xavier Holmes
5
Reliable 2km reach with consistent throughput.
Y
Yahir Simmons
5
Easy integration into existing 100G infrastructure.
Z
Zion Matthews
5
Maintained steady bandwidth during peak operations.
A
Alden Ramsey
4
High quality optics with predictable latency.
B
Blaine Kerr
4
Excellent short to mid-range 100G solution.
Questions & Answers
What is the QSFP-100G-CWDM4-S= transceiver?
The QSFP-100G-CWDM4-S= is a 100GBASE CWDM4 QSFP+ optical transceiver module designed for 2 km transmission over single-mode fiber with LC duplex connectors.
Which fiber type does the QSFP-100G-CWDM4-S= support?
It supports standard single-mode fiber (SMF) compliant with ITU-T G.652 specifications for distances up to 2 km.
What connectors are used by this transceiver?
The module uses duplex LC connectors to ensure reliable mating with SMF cable assemblies.
What wavelength range does the CWDM4 module cover?
It operates across four coarse WDM channels at 1271 nm, 1291 nm, 1311 nm and 1331 nm, meeting CWDM4 channel spacing requirements.
Is the QSFP-100G-CWDM4-S= hot-pluggable?
Yes, the transceiver is fully hot-pluggable for easy installation and maintenance without powering down the host system.
What is the power consumption of this module?
Typical power consumption is ≤ 3.5 W, ensuring energy efficiency in high-density deployments.
Which standards does the QSFP-100G-CWDM4-S= comply with?
It conforms to IEEE 802.3bm, MSA for CWDM4 QSFP, and RoHS for environmental compliance.
Can I use the transceiver in data center applications?
Absolutely; it is optimized for high-speed interconnects, spine-leaf architectures and aggregation links in data centers.
What is the operating temperature range?
The device operates reliably between 0 °C and 70 °C (industrial range variants may be available).
How do I verify compatibility with my switch or router?
Check the vendor’s compatibility matrix for QSFP+ CWDM4 modules or test with an SFP+ loopback to confirm link establishment.
Does the module support digital diagnostics monitoring (DDM)?
Yes, it features 2-wire serial interface DDM for real-time monitoring of optical output power, temperature and supply voltage.
What is the typical link budget of this CWDM4 transceiver?
With a minimum transmitter power of 0 dBm and receiver sensitivity of –10.5 dBm, it provides a link budget of approximately 10.5 dB.
How do I install the QSFP-100G-CWDM4-S= module?
Insert the module into the QSFP+ port until the latch clicks, then connect LC-terminated SMF cables to the TX/RX ports.
Is there a warranty or support for this transceiver?
Most vendors offer a one-year limited warranty covering defects in materials and workmanship, with optional extended support plans.
What are the primary use cases for the CWDM4 transceiver?
It’s ideal for 100G aggregation links, metro access, data center interconnects and enterprise backbone applications.
How do I clean and maintain the LC connectors?
Use lint-free wipes and isopropyl alcohol or designated fiber cleaning tools to remove dust and contaminants before mating.