GLC-SX-MM-RGD – 1G SX SFP – 550m MMF – Industrial Temp

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GLC-SX-MM-RGD Description

The GLC-SX-MM-RGD is a Cisco 1000BASE-SX rugged SFP transceiver for 1G links over multimode fiber in industrial enclosures. The module transmits at 850 nm on dual LC/PC connectors, reaches 220 m to 550 m depending on the multimode fiber type, supports DOM and operates from -40 to 85°C. The module does not run on single-mode fiber.

Quick Specs

Parameter

Specification

Product ID

GLC-SX-MM-RGD

Product type

1000BASE-SX rugged SFP optical transceiver

Ethernet standard

1000BASE-SX

SFP type

GE

Cable media

Multimode fiber

Operating distance

220 m to 550 m depending on fiber grade

Wavelength

850 nm class

Connector type

Dual LC/PC

Temperature class

Industrial

DOM support

Yes

Cisco ordering description

1000BASE-SX short wavelength; rugged

Wavelength class

850 nm

Transmit and receive wavelength range

770 to 860 nm

Application Scenarios

Industrial Cabinet Multimode Uplinks

In a factory cabinet where a rugged switch connects to a control room over multimode fiber, the module carries Gigabit Ethernet at 850 nm across runs of 220 m to 550 m depending on the fiber grade.

Rugged Embedded Platform SFP Ports

Cisco Embedded Service 9300 and Cisco IC3000 supported-module tables list the module, so it fits the Gigabit SFP ports of those rugged platforms for short multimode links.

Product Comparison

Parameter

GLC-SX-MM-RGD

GLC-SX-MMD

GLC-LX-SM-RGD

GLC-ZX-SM-RGD

Operating distance

220 m to 550 m depending on MMF type

220 m to 1000 m depending on MMF type

10,000 m over G.652 SMF; 550 m over MMF

Approximately 70 km depending on link loss

Fiber type

Multimode fiber

Multimode fiber

Single-mode fiber and multimode fiber

Single-mode fiber

Wavelength

850 nm

850 nm

1310 nm

1550 nm

Maximum channel insertion loss

2.4 dB to 5 dB depending on MMF type

2.4 dB to 5 dB depending on MMF type

6 dB on G.652 SMF; 2.4 dB on any MMF

21 dB on any SMF

Operating temperature

-40 to 85 C

-5 to 85 C

-40 to 85 C

-40 to 85 C

DOM support

Yes

Yes

Yes

Yes

GLC-SX-MM-RGD and GLC-SX-MMD are both 850 nm 1000BASE-SX multimode optics with DOM, but GLC-SX-MM-RGD reaches 220 m to 550 m where GLC-SX-MMD reaches 220 m to 1000 m depending on fiber grade, and GLC-SX-MM-RGD carries the industrial temperature class where GLC-SX-MMD is extended, so enclosures that stay above -5°C can use GLC-SX-MMD. Reach on multimode fiber is set by the fiber grade, up to 550 m for GLC-SX-MM-RGD. GLC-LX-SM-RGD also stops at 550 m on multimode fiber, so a longer multimode run needs a higher fiber grade for the SX optic, and a link on single-mode fiber needs GLC-LX-SM-RGD, a 1310 nm optic that keeps the industrial rating and reaches 10 km. Spans of approximately 70 km, depending on link loss, move to GLC-ZX-SM-RGD, a 1550 nm single-mode optic that is also industrial.

Ordering Checklist

  • Multimode fiber grade: Confirm the installed multimode grade: 220 m on FDDI-grade and 275 m on OM1 62.5 um fiber, and up to 550 m on 50 um fiber depending on grade. A span planned at the longest 850 nm SX figure can be out of reach on older fiber.

Specifications

Parameter Specification Parameter Specification
Product ID GLC-SX-MM-RGD Cisco ordering PID GLC-SX-MM-RGD=
Product type 1000BASE-SX rugged SFP optical transceiver Cisco ordering description 1000BASE-SX short wavelength; rugged
Ethernet standard 1000BASE-SX SFP type GE
Cable media Multimode fiber Operating distance 220 m to 550 m depending on fiber grade
Connector type Dual LC/PC Wavelength class 850 nm
Wavelength range 770 to 860 nm Transmit power range -3 to -9.5 dBm
Receive power range 0 to -17 dBm Temperature class Industrial
Operating temperature -40 to 85°C Storage temperature -40 to 85°C
DOM support Yes Typical power consumption Up to 1W per SFP port
Dimensions 8.5 x 13.4 x 56.5 mm Weight 75 grams or less
Safety certifications Laser Class I Standards reference IEEE 802.3z
Confirmed Cisco host examples Cisco Embedded Service 9300 and Cisco IC3000 supported-module tables list GLC-SX-MM-RGD= Compatibility reference Cisco Transceiver Modules Compatibility Information

Get More Information

Need pricing, stock, or shipping details for the GLC-SX-MM-RGD ? Layer23-Switch can help you check current availability, lead time, and delivery options for this. Send us the part number, quantity, and destination country via live chat or email [email protected] for a fast quotation.

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    Omar H.
    Posted on 28/08/2026
    Verified Buyer
    5.0

    works as it should. site is quick and clear

    Vince F.
    Posted on 20/08/2026
    Verified Buyer
    5.0

    thanks!, prompt service

    Gregory L.
    Posted on 28/07/2026
    Verified Buyer
    5.0

    Found exactly what I needed

    Margaret K.
    Posted on 10/07/2026
    Verified Buyer
    5.0

    no errors on the link

    Henry L.
    Posted on 02/07/2026
    Verified Buyer
    5.0

    Painless order.

Questions & Answers

  • What transmit and receive power ranges does GLC-SX-MM-RGD specify?

    GLC-SX-MM-RGD transmits at -3 to -9.5 dBm and receives at 0 to -17 dBm, with a wavelength range of 770 to 860 nm. The receive range sets the loss budget that patch cords and connectors must stay inside on the multimode link.
  • What storage temperature, size and standard apply to GLC-SX-MM-RGD?

    GLC-SX-MM-RGD follows IEEE 802.3z, can be stored from -40 to 85°C and measures 8.5 x 13.4 x 56.5 mm. It weighs 75 grams or less and is a Laser Class I product that draws up to 1W per SFP port.
  • How far does GLC-SX-MM-RGD reach on OM2 and OM3 multimode fiber?

    GLC-SX-MM-RGD reaches 550 m on OM2 fiber and 1000 m on OM3, OM4 or OM5 fiber. Reach follows the fiber grade, and older FDDI-grade fiber stops at 220 m, so confirm the installed grade before planning the link.
  • Can GLC-SX-MM-RGD be used on single-mode fiber?

    No. GLC-SX-MM-RGD is a multimode 850 nm optic and does not run on single-mode fiber. It uses dual LC/PC connectors with DOM support and an industrial rating of -40 to 85°C, so a single-mode link needs a long-wavelength optic.

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