740-080491 - Juniper 740-080491 100G BiDi QSFP28

Name: Juniper 740-080491 100G BiDi QSFP28
Brand: Juniper
SKU: 740-080491
Price: 850 USD
Availability: InStock

740-080491 - Juniper 740-080491 100G BiDi QSFP28 | US IT Hardware

Product overview

The Juniper Networks 740-080491 (JNP-QSFP-100G-BXSR) is a high-performance 100GBASE-SR2-BiDi QSFP28 optical transceiver engineered for short-range multimode fiber deployments in data center and enterprise networking environments. This bidirectional transceiver simultaneously transmits and receives 100 Gbps optical signals over a single pair of multimode fibers, achieving 100 meters reach over OM4 cabling and 70 meters over OM3. The module features dual VCSEL transmitters operating at 850 nm wavelength with integrated Digital Optical Monitoring (DOM) for real-time diagnostics including laser power, temperature, and voltage monitoring. Hot-swappable QSFP28 form factor enables field replacement without powering down network equipment. Designed for seamless integration with Juniper switching and routing platforms, the transceiver includes firmware recognition and enhanced visibility into link health. Enterprise-grade reliability with MTBF exceeding 3,000,000 hours supports mission-critical deployments requiring high availability and service continuity.

100 Gbps bidirectional transmission over multimode fiber.
100m reach on OM4, 70m on OM3 multimode cabling.
Integrated DDM monitoring for real-time diagnostics.
Hot-swappable QSFP28 form factor, no downtime required.
Dual VCSEL transmitters at 850nm wavelength.
Enterprise MTBF exceeding 3,000,000 operating hours.

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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

Manufacturer part #	740-080491
Brand	Juniper
Condition	New
MTBF	3,000,000+ hours (approximately 10 year lifespan)
Data Rate	100 Gigabit Ethernet, 106.25 Gbps supported
Fiber Type	Multimode fiber (MMF) OM3, OM4, OM5
Model Name	JNP-QSFP-100G-BXSR
Modulation	NRZ (Non-Return to Zero)
Part Number	740-080491
MSA Standard	QSFP28 Transceiver, SFF-8436
Product Type	Optical Transceiver

Compatible systems

The Juniper 740-080491 is fully compatible with current Juniper EX, MX, and PTX platforms featuring QSFP28 optical ports. It operates seamlessly with OM3/OM4/OM5 multimode fiber cabling using standard LC duplex connectors. Firmware recognition and DDM monitoring are integrated with Juniper Junos OS. No additional drivers or configuration required beyond standard transceiver insertion and link verification.

Juniper Networks EX Series Switches
Model: EX4300, EX4400, EX4600, EX9200
Form factor: QSFP28 port
Generation: Current
Validated for Juniper switching platforms with QSFP28 optical ports. Firmware recognition and DDM monitoring integrated with Juniper OS.
Juniper Networks MX Series Routers
Model: MX240, MX480, MX960, MX10003
Form factor: QSFP28 port
Generation: Current
Compatible with MX series interface modules supporting QSFP28 form factor. Supports 100G optical interfaces in routing platforms.
Juniper Networks PTX Series Packet Transport
Model: PTX3000, PTX5000, PTX10000
Form factor: QSFP28 port
Generation: Current
Validated for high-performance packet transport platforms requiring 100G optical interconnects.

Best for

Data Center Interconnect
Short-range 100G links between top-of-rack switches and core infrastructure over multimode fiber backbone, supporting high-density deployments with reduced latency.

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Wavelength TX	832-918nm, 850nm nominal

Breakout Capable	No

Transmitter Type	2x VCSEL (Vertical-Cavity Surface-Emitting Laser)

Transmitter Power	–6 to +4 dBm per lane

RMS Spectral Width	0.59 nm

Supported Platforms	Juniper EX, MX, PTX series with QSFP28 optical ports

Compliance Standards	IEEE 802.3bm, 100GBASE SR-BiDi, QSFP28 MSA, SFF-8436, CE, RoHS, Class 1 FDA, IEC60825-1 Laser Safety

Receiver Sensitivity	–7.9 dBm minimum, –3.0 dBm OMA stressed

Monitoring Parameters	Supply voltage, laser quiescent current, laser output power, laser input power, module temperature

Transmission Standard	100GBASE-SR2-BiDi, 100GBASE-BXSR OM4

Bidirectional Capability	Yes, simultaneous transmit and receive on single fiber pair

Forward Error Correction	Host FEC supported

Digital Optical Monitoring	Yes, DDM/DOM SFF-8472 compliant

Receiver Maximum Input Power	+4.0 dBm per lane

Effective Modal Bandwidth OM3	2000 MHz × km

Effective Modal Bandwidth OM4	4700 MHz × km

Juniper Ecosystem Integration	Firmware recognition, diagnostics, and monitoring designed for seamless integration with Juniper OS and switching/routing platforms

Maximum Reach OM3	70 meters
Maximum Reach OM4	100 meters

Power Supply	+3.3V single supply
Maximum Power Consumption	4 watts

Physical Characteristics

Weight	Approximately 100 grams
Form Factor	QSFP28
Hot-Swappable	Yes, QSFP28 form factor allows field replacement without powering down
Physical Dimensions	13.5 × 18.4 × 72.4 mm (H × W × D)

Operating Temperature Range	0°C to +70°C

Connector Type	Duplex LC PC/UPC

Frequently asked questions

What is the maximum transmission distance for the Juniper 740-080491?

The 740-080491 achieves 100 meters over OM4 multimode fiber and 70 meters over OM3 cabling. The bidirectional design transmits and receives simultaneously on a single fiber pair, making it ideal for short-range data center and campus deployments. Reach is determined by modal bandwidth and optical power budgets defined in the 100GBASE-SR2-BiDi standard.

Does this transceiver support Digital Optical Monitoring (DOM)?

Yes, the 740-080491 includes integrated DDM/DOM functionality compliant with MSA SFF-8472 standards. It provides real-time monitoring of supply voltage, laser quiescent current, laser output power, laser input power, and module temperature. This enables proactive network diagnostics and troubleshooting without requiring external monitoring equipment.

What Juniper platforms support the 740-080491 transceiver?

The 740-080491 is validated for use across Juniper's switching and routing platforms with QSFP28 port support. Juniper's Pathfinder compatibility matrix lists supported interface modules and hardware generations. Firmware recognition and diagnostics are designed to work seamlessly with Juniper operating systems, ensuring optimal interoperability and link health visibility.

Can the 740-080491 be replaced without powering down the switch?

Yes, the QSFP28 form factor is hot-swappable, allowing field replacement without powering down network equipment. This capability is essential in mission-critical environments where service continuity is paramount. Simply remove the transceiver from the port and insert the replacement module—no system restart required.

What wavelengths does the 740-080491 operate at?

The 740-080491 operates at 850 nm wavelength, the standard for short-range multimode fiber transceivers. It uses dual VCSEL (Vertical-Cavity Surface-Emitting Laser) transmitters with RMS spectral width of 0.59 nm. Receiver sensitivity ranges from –7.9 dBm minimum to +4.0 dBm maximum input power per lane.

Is the 740-080491 compatible with third-party multimode fiber cabling?

The 740-080491 supports standard OM3 and OM4 multimode fiber cabling with LC duplex connectors. It adheres to QSFP28 MSA standards and 100GBASE-SR2-BiDi specifications, ensuring compatibility with industry-standard fiber infrastructure. Effective modal bandwidth is 2000 MHz×km for OM3 and 4700 MHz×km for OM4.

What is the power consumption of the 740-080491?

The 740-080491 operates on a single +3.3V power supply with maximum power consumption of 4 watts. This low power envelope reduces heat dissipation in high-density switch deployments and supports extended transceiver arrays without thermal management concerns. Power regulation is designed to protect sensitive networking components.

Juniper 740-080491 100G BiDi QSFP28

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