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Compact SFP transceiver module with silver metal housing and black LC duplex port label

STARTECH

STARTECH GLCZXSMRGDST SFP transceiver 1550nm 70 km 1.25 Gbps

SKU CH-SVCH-TMA5N

A single-mode SFP transceiver delivers 1.25 Gbps over 70 km at 1550 nm wavelength for 1000BASE-ZX networks

  • Port count1 - Fiber Optic LC Duplex Female
  • Product typeTransceiver
  • Supported standardsIEEE 802.3z 1000BASE-ZX
  • Optical wavelength1550 nm
  • Fiber modeSingle Mode
  • Supported protocolsTCP/IP
  • Gigabit Ethernet links over 70 km single-mode fiber
  • Cisco GLC-ZX-SM-RGD compatible SFP module
  • IEEE 802.3z 1000BASE-ZX standard compliant
  • Hot-swappable with DDM monitoring support
  • Low power consumption under 1 W

Cisco-compatible SFP for long-haul fibre

This StarTech.com GLCZXSMRGDST transceiver delivers 1.25 Gbps over single-mode fibre at 1550 nm. It is built for network operators who need a drop-in replacement for the Cisco GLC-ZX-SM-RGD module. The hot-swappable SFP form factor fits standard Mini-GBIC slots in switches and routers.

1000BASE-ZX reach and temperature limits

The IEEE 802.3z 1000BASE-ZX standard defines a maximum link distance of 70 km (43.5 mi) on single-mode cable. Operating temperature is rated from 0 °C to 70 °C (32 °F to 158 °F), while storage spans -40 °C to 85 °C (-40 °F to 185 °F). Humidity tolerance is 5 % to 95 % RH non-condensing.

70 km capacity with sub-1 W draw

The module comfortably handles campus and metro links up to the full 70 km specification while consuming less than 1 W. Digital diagnostic monitoring provides real-time optical power and temperature data. It will not serve shorter-reach multi-mode environments or speeds beyond 1.25 Gbps.

How it compares

Measured against everything we stock in SFP & SFP+ Transceiver Modules, at today’s prices. Recalculated every night.

Price $152.99
Typical for this category: the median of 1,471 items is $138.99.

Specifications

Product
Brand nameStarTech.com
Model nameGLCZXSMRGDST
Product typeTransceiver
Performance
Transfer speed1.25 Gbit/s
Connectivity
Supported standardsIEEE 802.3z 1000BASE-ZX
Optical wavelength1550 nm
Fiber modeSingle Mode
Supported protocolsTCP/IP
Maximum range70 km (43.5 mi)
Ports & slots
Port count1 - Fiber Optic LC Duplex Female
Size & build
Shipping weight0.05 kg
Package size120 × 90 × 30 mm
In the box
In the box1 - SFP transceiver
Environment & compliance
Temperature rangeOperating Temperature: 0 degree C to 70 degree C (32 degree F to 158 degree F)
Storage Temperature: -40 degree C to 85 degree C (-40 degree F to 185 degree F)
Humidity range5 to 95% RH

Questions about this item

Should I choose a different SFP for shorter links or does this 70 km module work fine?

The GLCZXSMRGDST is rated for up to 70 km on single-mode fiber; it will operate on shorter spans but you must ensure the link budget and received power stay within the transceiver limits.

What does the 1.25 Gbps rate deliver in a live Gigabit Ethernet switch?

It provides a full-duplex 1000BASE-ZX connection at line rate with IEEE 802.3z framing, so the switch sees a standard Gigabit Ethernet port.

The LC duplex port follows which MSA and what distance does that cap?

The module complies with the SFP MSA and the 1000BASE-ZX standard, which defines the 70 km reach on 1550 nm single-mode fiber.

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