Juniper SFP-1GE-SX · 740-031851

MPN / P/N

740-031851

Manufacturer model

SFP-1GE-SX

Part Number

740-031851

Speed

Gigabit Ethernet

Breakout Capable

No

Form Factor

SFP

Product Type

Optical Transceiver

Connector

Duplex LC PC/UPC

Monitoring Available

Yes

1000BASE-SX / Cable type

MMF

1000BASE-SX / Core size/cladding

62.5/125 µm | 50/125 µm

1000BASE-SX / Distance

200 m | 500 m

1000BASE-SX / Maximum Power consumption (W)

1 W

1000BASE-SX / Operating Temperature (range)

–10° C to 85° C

1000BASE-SX / Receiver input power, each lane (maximum)

0 dBm

1000BASE-SX / Receiver input power, each lane (minimum)

–17 dBm

1000BASE-SX / Signaling rate, each lane

1000 Mbps

1000BASE-SX / Storage temperature

–40° C to 85° C

1000BASE-SX / Transmitter output power, each lane (maximum)

0 dBm

1000BASE-SX / Transmitter output power, each lane (minimum)

–9.5 dBm

1000BASE-SX / Transmitter wavelengths (range)

770 nm through 860 nm

Documented selection limits

Reach, rate, form factor and breakout support apply only to the listed standard/mode, fiber grade and platform/port configuration. Keep source qualifiers for FEC, attenuation, transmit/receive limits, temperature, active/passive operation and cable ends. Check Juniper HCT for the exact host, interface module, port mode, Junos release, required QSA adapter and qualifications before ordering. Do not infer universal interoperability or combine power/temperature/reach across model profiles. Optical link budgets are not calculated or inferred. Parallel fiber/core/modal-bandwidth/distance values retain the same source column order; correlate matching columns instead of applying the largest distance to every fiber.

Reading parallel values

Pipe-separated fiber, bandwidth and reach values correspond by position in the original manufacturer column order. The longest reach does not apply to every fiber type.

Specification source: Juniper ↗
Checked against documentation: 19.10.2026