Juniper EX-SFP-1GE-SX 1G SFP SX 850nm 550m MMF Transceiver (740-011613)

Brand: Juniper | Category: Transceivers & Cables

SKU: JUN-EX-SFP-1GE-SX-740-011613 | Part #: EX-SFP-1GE-SX | MPN: EX-SFP-1GE-SX

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The Juniper EX-SFP-1GE-SX transceiver is a single-mode optical module built for network engineers who measure twice before they install once. At its core, this is a small form-factor pluggable transceiver that fits into the constrained port density environments of modern data centre switching fabric—the kind of space where millimetres matter as much as megabits. The LC duplex connector and SFP form factor are industry standards, which means your cable management and port spacing calculations remain predictable across racks, regardless of vendor politics or proprietary form factors creeping into your infrastructure.

Juniper Networks designed the EX-SFP-1GE-SX for 1000BASE-SX operation—that is, gigabit Ethernet over multimode fibre at 850 nanometres wavelength. This is the workhorse optical wavelength in short-reach data centre deployments, where cost per port and thermal headroom both influence purchasing decisions. The module uses a VCSEL laser, a vertical-cavity surface-emitting laser, which has been refined over two decades into a reliable, low-power light source that sits comfortably within the power budget constraints of shared optical backplanes in access and distribution layer switching. Over OM2-grade multimode fibre (50/125 micrometre core diameter), you will reach 550 metres. Over the older OM1 fibre (62.5/125) still present in some facilities, you will see 275 metres. Neither distance is accidental; Juniper Networks has tuned the optical aperture and transmit power to maximise reach without creating thermal or power-consumption penalties downstream.

Network engineers deploying this Juniper module will appreciate the digital diagnostics monitoring capability. Compliant with SFF-8472, the transceiver reports real-time optical power levels, laser bias current, and module temperature to any switch management interface that can read DDM telemetry. This is not window dressing—when you manage thousands of optics across a multi-rack deployment, automated monitoring catches a slowly degrading laser or a misaligned connector long before traffic errors force a 2 a.m. emergency replacement. The part number EX-SFP-1GE-SX will appear in your asset register, but the DDM data will appear in your syslog and monitoring dashboard, making troubleshooting a matter of reading dashboards rather than guessing at cable runs. Hot-pluggable design means you can swap modules without power-cycling the switch port, a practical advantage when planned maintenance windows compress and unplanned outages cannot be tolerated.

Juniper EX-series switching platforms—including the EX2200, EX3200, EX3300, EX4200, EX4500, and EX4550—all accommodate this transceiver. The Juniper orderable part number is 740-011613; the manufacturer part number is EX-SFP-1GE-SX. The module conforms to the SFP MSA (multi-source agreement), meaning it will physically and electrically seat in any standards-compliant SFP cage, but Juniper has validated interoperability with its own platforms. RoHS compliance and commercial-grade temperature specifications (0°C to 70°C) align this module with standard enterprise purchasing requirements. For data centre sysadmins and network operations teams evaluating fibre costs across their switching fabric, this is the module that appears in spreadsheets alongside commodity SFP pricing but carries the Juniper validation seal that most organisations' procurement policies require.

Omnixon Global stocks the Juniper EX-SFP-1GE-SX and maintains inventory across the GCC, South Asia, and Southeast Asia for organisations that cannot afford lead times on critical network components. Whether you are building out a new data centre stack, refreshing switching fabric in an AI lab with demanding bandwidth requirements, or maintaining spares for an existing Juniper estate, we hold validated stock and can support next-day delivery to major UAE and regional hubs. Submit an RFQ through our platform, and our team will confirm availability and commercial terms for your deployment.

Optical Performance & Deployment Parameters

• 1000BASE-SX gigabit Ethernet operation at 850 nm wavelength using VCSEL laser technology
• Maximum reach of 550 metres over OM2 multimode fibre; 275 metres over legacy OM1 fibre
• SFF-8472 digital diagnostics monitoring (DDM) for real-time optical power, laser current, and module temperature telemetry
• LC duplex connector with hot-plug support; no port power-down required during module replacement
• Validated compatibility with Juniper EX2200, EX3200, EX3300, EX4200, EX4500, and EX4550 switch platforms
• RoHS compliant; commercial temperature range 0°C to 70°C; IEEE 802.3z and SFP MSA standards adherence
• Low power consumption profile suitable for high-density multi-transceiver deployments in space- and thermally-constrained data centre environments