What is the maximum transmission distance of Juniper 740-061408?

The 740-061408 QSFP28 transceiver supports up to 2km over single-mode fiber (SMF 9/125μm) using 100GBASE-CWDM4 protocol with four CWDM wavelengths. Transmitter output -6.5 to 2.5 dBm and receiver input -11.5 to 2.5 dBm ensure reliable performance in data center and campus links.

Does the 740-061408 support digital diagnostics?

Yes, it includes digital optical monitoring (DOM) per SFF standards, enabling real-time tracking of optical power, temperature, voltage, and laser bias. This facilitates proactive maintenance in Juniper switches and routers for mission-critical 100G deployments.

What are the operating conditions for this transceiver?

Commercial temperature range of 0°C to 70°C with storage -40°C to 85°C. Max power draw is 3.5W, making it suitable for high-density racks without excessive cooling demands in enterprise data centers.

What fiber and connector does it require?

Requires single-mode fiber (SMF) with 9/125μm core/cladding and duplex LC PC/UPC connector. CWDM4 multiplexing optimizes fiber usage for 100G over a single pair, ideal for infrastructure upgrades.

Is it compatible with Juniper QSFP28 ports?

Optimized for Juniper platforms like PTX, QFX, and MX series with QSFP28 cages. Listed as QSFP-100G-CWDM-C in Juniper Pathfinder, ensuring full feature support including breakout-incapable design for native 100G.

What wavelengths does the CWDM4 module use?

Four lanes: 1264.5-1277.5nm, 1284.5-1297.5nm, 1304.5-1317.5nm, 1324.5-1337.5nm centered around 1310nm. This enables low-crosstalk, high-density wavelength use over SMF for efficient 100G transport.

740-061408 - Juniper 740-061408 100G CWDM4 QSFP28 2km SMF Module

Name: Juniper 740-061408 100G CWDM4 QSFP28 2km SMF Module
Brand: Juniper
SKU: 740-061408
Price: 375 USD
Availability: InStock

740-061408 - Juniper 740-061408 100G CWDM4 QSFP28 2km SMF Module | US IT Hardware

Product overview

The Juniper Networks 740-061408, model QSFP-100G-CWDM-C, is a QSFP28 optical transceiver module designed for 100 Gigabit Ethernet connectivity in data centers and enterprise networks. It utilizes Coarse Wavelength Division Multiplexing (CWDM4) technology with four wavelengths (1271-1331nm range) over single-mode fiber (SMF 9/125μm), achieving transmission distances up to 2km. Key features include 25.78125 Gbps per lane signaling, duplex LC connector, digital optical monitoring (DOM) for real-time diagnostics, and compliance with 100GBASE-CWDM4 MSA and SFF-8665 standards. With transmitter power -6.5 to 2.5 dBm, receiver sensitivity -11.5 to 2.5 dBm, and max power consumption of 3.5W, it ensures low latency, high reliability, and energy efficiency. Operating temperature 0-70°C makes it suitable for dense rack environments. Ideal for top-of-rack switches, spine-leaf architectures, and metro access, reducing cabling complexity while supporting wire-speed performance in Juniper platforms.

100GBASE-CWDM4 over 2km single-mode fiber.
QSFP28 form factor with duplex LC connector.
Digital optical monitoring for real-time diagnostics.
3.5W maximum power consumption with 0-70°C range.
Four CWDM wavelengths from 1271-1331nm per lane.
25.78125 Gbps signaling rate per lane with MSA compliance.

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Rx Input Power Min
Manufacturer part #	740-061408
Brand	Juniper
Condition	Refurbished
Model	QSFP-100G-CWDM-C
Protocol	100GBASE-CWDM4 MSA
Compliance	SFF-8665 standards
Monitoring	Digital Optical Monitoring (DOM) supported
Part Number	740-061408
Product Type	Optical Transceiver
Transceiver Type	QSFP28
Rx Input Power Max	2.5 dBm

Compatible systems

Primarily for Juniper QSFP28 ports in PTX/QFX/MX series; SMF infrastructure required.

Juniper Networks PTX Series
Form factor: QSFP28
Native support per Pathfinder.
Juniper Networks QFX Series
Form factor: QSFP28
Data center switches with QSFP28 ports.
Juniper Networks MX Series
Form factor: QSFP28
Universal routing platforms.

Best for

Data Center Interconnect
Leaf-spine 100G uplinks over 2km SMF for east-west traffic in hyperscale environments.
Campus Networking
High-speed aggregation between buildings using CWDM4 multiplexing on single fiber pair.
Metro Access
Short-reach 100G links in service provider edge networks with DOM monitoring.
Enterprise Core
100G backbone connectivity in routed access layers for low-latency applications.

Details

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Speed	100 Gigabit Ethernet
Signaling Rate per Lane	25.78125 ± 100 ppm Gbps

Cable Type	Single-Mode Fiber (SMF)
Fiber Grade	SMF
Core/Cladding	9/125 μm
Wavelength Center	1310nm
Transmission Distance	Up to 2 km

Juniper 740-061408 100G CWDM4 QSFP28 2km SMF Module

Product overview

Featuring

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Network & Communication

Power Consumption

Physical Characteristics

Environmental

Interface/Ports

Frequently asked questions

Storage Temperature	-40°C to 85°C
Operating Temperature	0°C to 70°C