SFP-10G-ER – 10GBASE-ER SFP+ – 1550nm SMF – 40km Reach

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SFP-10G-ER Description

SFP-10G-ER is a Cisco 10GBASE-ER SFP+ optical transceiver for 10 Gigabit Ethernet links over standard ITU-T G.652 single-mode fiber. It is used for long-reach fiber uplinks and BOM-matched host ports that require a Cisco SFP+ module with up to 40 km reach, 1550 nm wavelength operation, dual LC/PC connectivity, 1.5W maximum power consumption, and commercial 0 to 70 degrees C operation.

Quick Specs

Parameter

Specification

Product ID

SFP-10G-ER

Product type

10GBASE-ER SFP+ transceiver

Ethernet rate

10 Gigabit Ethernet

Fiber type

Standard single-mode fiber

SMF reference

ITU-T G.652

Wavelength

1550 nm

Operating distance

Up to 40 km

Connector

Dual LC/PC

Maximum power consumption

1.5W

Operating temperature class

Commercial 0 to 70 degrees C

Attenuator planning

5 dB 1550 nm fixed-loss attenuator for links under 20 km

Application Scenarios

Long single-mode 10G uplinks

Use SFP-10G-ER when the bill of materials calls for a Cisco 10GBASE-ER SFP+ optic on standard G.652 single-mode fiber and the planned link reaches beyond the usual LR distance.

Metro or campus fiber spans

For 30 to 40 km fiber paths, keep the design tied to engineered-link review rather than treating the optic as a generic 40 km part. The cable loss value and host support record should travel with the quote.

ER-family spare control

Keep SFP-10G-ER separate from SFP-10G-ER-S and SFP-10G-ER-I in spares planning because the official ordering descriptions differ by S-Class positioning and industrial-temperature multirate support.

Product Comparison

Parameter

SFP-10G-ER

SFP-10G-ZR

SFP-10G-LR

Product type

10GBASE-ER SFP+ transceiver

Multirate 10GBASE-ZR SFP+ transceiver

10GBASE-LR SFP+ transceiver

Supported media

Standard SMF

Standard SMF

Standard SMF

Fiber reference

G.652

G.652

G.652

Nominal wavelength

1550 nm

1550 nm

1310 nm

Documented reach

Up to 40 km

Up to about 80 km

10 km

Optical type

10GBASE-ER 1550 nm SMF

10GBASE-ZR 1550 nm SMF

10GBASE-LR 1310 nm SMF

Operating temperature class

Commercial

Commercial

Commercial 0 to 70 degrees C

Maximum power consumption

1.5W

1.5W

1W

Bail latch color

Red

Green

Blue

Ordering description

10GBASE-ER SFP+ Module for SMF

Multirate 10GBASE-ZR, 10GBASE-ZW and OTU2e SFP+ Module for SMF

10GBASE-LR SFP+ Module for SMF

  • In a SFP-10G-ER vs SFP-10G-ER-S comparison, the table shows the same ER reach, SMF medium, wavelength, red latch, and commercial temperature class, while SFP-10G-ER-S is the S-Class ordering line.
  • The SFP-10G-ER difference from SFP-10G-ER-I is temperature and protocol scope: SFP-10G-ER is the commercial 10GBASE-ER line, while SFP-10G-ER-I is the industrial-temperature multirate ER variant.
  • SFP-10G-ER vs SFP-10G-ZR is a reach comparison; SFP-10G-ER is documented for up to 40 km, while SFP-10G-ZR is the longer Cisco ZR option at up to about 80 km.
  • For which model to choose, match the fiber span, temperature class, transceiver family, and Cisco host-support entry before substituting another 1550 nm optic. SFP-10G-LR is included as an additional same-family comparison point.

Selection Guide

1. Choose it for 40 km ER reach

Select SFP-10G-ER when the design requires Cisco 10GBASE-ER over G.652 single-mode fiber and the planned distance fits the documented 40 km class.

2. Use LR for shorter 10 km runs

Move to the Cisco LR family when the link only needs the 10 km SMF class; ER adds attenuation and engineered-link checks that are not required for many shorter spans.

3. Use ER-I for industrial temperature needs

Choose SFP-10G-ER-I instead when the host and site require Cisco’s industrial-temperature multirate ER module rather than a commercial-temperature ER optic.

4. Review ZR only for longer spans

Evaluate SFP-10G-ZR when the fiber design needs Cisco’s longer 1550 nm ZR reach and the optical budget fits the ZR attenuation requirements.

Ordering Checklist

Check Item

What to Confirm

Procurement Risk Controlled

Host support

Cisco compatibility source confirms the platform, port, and software support

Avoids approving the optic from SFP+ form factor alone

Fiber plant

Standard G.652 single-mode fiber is available for the 1550 nm ER span

Keeps the reach claim tied to Cisco’s cabling table

Connector plan

Patch cords use LC/PC or LC/UPC ends, not APC ends

Matches Cisco’s connector rule for this SFP+ family

Minimum distance

The link respects the 2 m minimum cabling distance for ER modules

Avoids a lab or back-to-back connection outside Cisco’s cabling note

Short-link attenuation

Links under 20 km include 5 dB 1550 nm fixed-loss attenuation planning

Reduces receiver overload risk during short ER deployments

Engineered-link review

Links beyond 30 km have documented cable loss and path characteristics

Prevents treating the 40 km value as a plug-and-play span

Specifications

Parameter Specification Parameter Specification
Product ID SFP-10G-ER Product type 10GBASE-ER SFP+ transceiver
Ordering description 10GBASE-ER SFP+ Module for SMF Ethernet rate 10 Gigabit Ethernet
Fiber type Standard single-mode fiber SMF reference ITU-T G.652
Wavelength 1550 nm Transmit and receive wavelength range 1530 to 1565 nm
Operating distance Up to 40 km Engineered-link note Links longer than 30 km are engineered links
Transmit power range +4.0 to -4.7 dBm Receive power range -1.0 to -15.8 dBm
Connector Dual LC/PC Patch-cord rule PC or UPC connectors supported
Bail latch color Red Maximum power consumption 1.5W
Operating temperature class Commercial Commercial operating temperature 0 to 70 degrees C
Storage temperature range -40 to 85 degrees C Minimum cabling distance 2 m
Short-link attenuation 5 dB 1550 nm fixed-loss attenuator for links under 20 km Attenuator spare part 15216 ATT LC 5=
SFP+ connector dimensions 8.5 x 13.4 x 56.5 mm SFP+ connector weight 75 grams or less
Platform support boundary Cisco compatibility matrix required for exact host and software support Standard warranty 5 years

Get More Information

Need pricing, stock, or shipping details for the SFP-10G-ER ? 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 sales@layer23-switch.com for a fast quotation.

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Customer Reviews

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    Samantha Tanaka
    Posted on 11/03/2026
    Verified Buyer
    5.0

    Box contents matched the shipping manifest perfectly. Nothing missing, nothing extra.

    William Long
    Posted on 05/02/2026
    Verified Buyer
    5.0

    Received a shipping notification within an hour of ordering.

    Ashley Moore
    Posted on 01/01/2026
    Verified Buyer
    5.0

    Zero post-deployment issues. Our monitoring shows clean performance.

    M. Al-Fayed
    Posted on 05/10/2024
    Verified Buyer
    5.0

    Excellent packaging. International shipping was surprisingly fast. Very happy with the service.

    System Admin - L2
    Posted on 28/07/2024
    Verified Buyer
    5.0

    High quality, genuine optics. Running stable for months now. Service was excellent.

Questions & Answers

  • What is SFP-10G-ER used for?

    SFP-10G-ER is used for 40 km 10GBASE-ER links over G.652 SMF at 1550 nm in Cisco SFP+ ports.
  • How far can SFP-10G-ER reach?

    SFP-10G-ER supports up to 40 km on standard G.652 single-mode fiber, with engineered-link considerations for long ER spans.
  • What short-link protection is required for SFP-10G-ER?

    SFP-10G-ER deployments below 20 km need a 5 dB 1550 nm fixed loss attenuator as part of the optical budget.
  • How is SFP-10G-ER different from SFP-10G-LR-X?

    SFP-10G-ER reaches 40 km at 1550 nm, while SFP-10G-LR-X reaches 10 km at 1310 nm with extended temperature support.
  • Why choose SFP-10G-ER instead of SFP-10G-ER-S?

    SFP-10G-ER is the standard 40 km ER module for SMF links, while SFP-10G-ER-S trades feature scope for the S-Class option.
  • Can SFP-10G-ER be used over multimode fiber?

    No. SFP-10G-ER is designed for standard single-mode fiber; multimode 10G links belong to SR optics such as SFP-10G-SR-X.
  • What connector does SFP-10G-ER use?

    SFP-10G-ER uses dual LC/PC connectors, and Cisco supports PC or UPC patch cords rather than APC patch cords.
  • What loss-budget question matters for SFP-10G-ER?

    SFP-10G-ER deployments need measured fiber loss, link distance, connector loss, and the required 5 dB attenuator rule checked before activation.

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  • SFP-10G-ER Datasheet