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.

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QSFP-100G-CWDM4-S=

Name: 100GBASE CWDM4 QSFP TRANSCEIVER LC 2KM OVER SMF
Brand: Cisco
SKU: QSFP-100G-CWDM4-S=
Price: 4621.00 USD
Availability: InStock
Rating: 4.4 (7 reviews)

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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
Form Factor: QSFP
Data Rate: 100G
Connector Type: LC
Wavelength: CWDM4 (1270nm-1330nm)
Transmission Distance: Short-Range
Fiber Type: Single-mode
Max Distance: 2km
Supported Protocols: Ethernet
Network Interface: Fiber
Power Consumption: 6.0W
Operating Temperature: 0 to 70°C
Storage Temperature: -40 to 85°C
Input Voltage: 3.3V
Compatibility: Cisco / Juniper / Huawei / Arista
Product Name: QSFP-100G-CWDM4-S=
Height: 0.35 inches
Width: 3.46 inches
Depth: 3.00 inches
Weight: 0.07 lbs

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=
Compatibility	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista
Connector Type	LC	LC	LC	LC	LC
Data Rate	100G	100G	100G	10G	100G
Depth	3.00 inches	0.95 inches	N/A	N/A	N/A
Fiber Type	Single-mode	Single-mode	Single-mode	Single-mode	Single-mode
Form Factor	QSFP	QSFP	QSFP28	QSFP+	QSFP28
Height	0.35 inches	0.65 inches	N/A	N/A	N/A
Input Voltage	3.3V	3.3V	3.3V	3.3V	3.3V
Max Distance	2km	500 meters	2000 meters	80 km	40 km
Network Interface	Fiber	Ethernet	Fiber	Ethernet	Fiber
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C
Power Consumption	6.0W	8.5W	N/A	N/A	N/A
Product Name	QSFP-100G-CWDM4-S=	CPAK-100G-PSM4=	QSFP-100G-FR-S=	CPAK-10X10G-ERL=	CPAK-100G-ER4L=
Product Type	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver
Storage Temperature	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C
Supported Protocols	Ethernet	Ethernet	Ethernet	Ethernet	Ethernet
Transmission Distance	Short-Range	Short-Range	Long-Range	Long-Range	Long-Range
Wavelength	CWDM4 (1270nm-1330nm)	1310nm	1310 nm	1310 nm	1310 nm
Weight	0.07 lbs	0.25 lbs	N/A	N/A	N/A
Width	3.46 inches	0.80 inches	N/A	N/A	N/A

Reviews & Ratings

Vaughn Wallace

Delivered stable 100G CWDM4 performance over 2km SMF.

Wesley Norton

Strong optical stability and clean LC connectivity.

Xavier Holmes

Reliable 2km reach with consistent throughput.

Yahir Simmons

Easy integration into existing 100G infrastructure.

Zion Matthews

Maintained steady bandwidth during peak operations.

Alden Ramsey

High quality optics with predictable latency.

Blaine Kerr

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.

Related Searches Cisco 100G Optical Modules

QSFP-100G-SM-SR=QSFP-100G-CWDM4-S-C QSFP-100G-LR4-S=QSFP-100G-ER4L-S=QSFP-100G-SM-SR-C QSFP-100G-PSM4-S=CPAK-100G-CWDM4=QDD-2X100-CWDM4-S

QSFP-100G-CWDM4-S= Overview

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

Form Factor

QSFP

Data Rate

100G

Connector Type

Wavelength

CWDM4 (1270nm-1330nm)

Transmission Distance

Short-Range

Fiber Type

Single-mode

Max Distance

2km

Supported Protocols

Ethernet

Network Interface

Fiber

Power Consumption

6.0W

Operating Temperature

0 to 70°C

Storage Temperature

-40 to 85°C

Input Voltage

3.3V

Compatibility

Cisco / Juniper / Huawei / Arista

Product Name

QSFP-100G-CWDM4-S=

Height

0.35 inches

Width

3.46 inches

Depth

3.00 inches

Weight

0.07 lbs

Product Comparison Table

	QSFP-100G-CWDM4-S=	CPAK-100G-PSM4=	QSFP-100G-FR-S=	CPAK-10X10G-ERL=	CPAK-100G-ER4L=
Compatibility	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista
Connector Type	LC	LC	LC	LC	LC
Data Rate	100G	100G	100G	10G	100G
Depth	3.00 inches	0.95 inches	N/A	N/A	N/A
Fiber Type	Single-mode	Single-mode	Single-mode	Single-mode	Single-mode
Form Factor	QSFP	QSFP	QSFP28	QSFP+	QSFP28
Height	0.35 inches	0.65 inches	N/A	N/A	N/A
Input Voltage	3.3V	3.3V	3.3V	3.3V	3.3V
Max Distance	2km	500 meters	2000 meters	80 km	40 km
Network Interface	Fiber	Ethernet	Fiber	Ethernet	Fiber
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C
Power Consumption	6.0W	8.5W	N/A	N/A	N/A
Product Name	QSFP-100G-CWDM4-S=	CPAK-100G-PSM4=	QSFP-100G-FR-S=	CPAK-10X10G-ERL=	CPAK-100G-ER4L=
Product Type	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver
Storage Temperature	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C
Supported Protocols	Ethernet	Ethernet	Ethernet	Ethernet	Ethernet
Transmission Distance	Short-Range	Short-Range	Long-Range	Long-Range	Long-Range
Wavelength	CWDM4 (1270nm-1330nm)	1310nm	1310 nm	1310 nm	1310 nm
Weight	0.07 lbs	0.25 lbs	N/A	N/A	N/A
Width	3.46 inches	0.80 inches	N/A	N/A	N/A

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.