CPAK-100G-ER4F

100GBASE-ER4 Lite Cisco CPAK Module for SMF (FEC available, terminated with LC Connectors), 100G Ethernet rate only

The Cisco CPAK-100G-ER4F delivers integrated CMOS photonics for 100G Ethernet connectivity up to 40km over fiber.

CPAK-100G-ER4F Overview

The Cisco CPAK-100G-ER4F is a 100GBASE pluggable optic that supports links up to 40km over single-mode fiber. It delivers 100Gbps throughput by multiplexing 4 lanes of 25Gbps Ethernet traffic onto different CWDM wavelengths.

This module utilizes Cisco’s CMOS photonics technology for optical integration within the small CPAK form factor. The ER4F supports forward error correction (FEC) for extended reach. It comes with LC connectors for attaching duplex SMF.

The CPAK-100G-ER4F focuses specifically on 100GbE support, without optical transport network protocols. FEC and integrated optics help maximize the 100Gbps capacity over long distance links.

Quick Specifications

Spec	Value
Data Rate	100Gbps
Protocol	100GBASE
Reach	40km with FEC 30km without FEC
Fiber	SMF G.652
Connectors	LC
Power	<10W

CPAK-100G-ER4F Features and Benefits

Key features enabled by the CPAK-100G-ER4F:

Extended reach – Up to 40km with integrated FEC
Low power – CPAK + CMOS photonics for efficiency
Small form factor – Higher density than CFPs
Integrated optics – Enables compact optical components
Cisco qualified – Ensures compatibility and support

Compatible Products

The module is supported on these Cisco routing and switching platforms:

Product Family	Models
Nexus Switches	Nexus 3400-S, Nexus 7000/7700
Routers	NCS 5000/5500 Series
Optical Systems	NCS 2000, 15454 MSTP

Full Specifications

Optical

Parameter	Value
Tx power (per lane)	+6.5 to -2.5 dBm
Rx power (per lane)	-3.5 to -20.5dBm (FEC on)
Wavelengths	4 x 1310nm

Electrical and Physical

Parameter	Value
Power	< 10W
Dimensions	11.6 x 34.8 x 101.2 mm
Weight	127 grams
Operating temperature	0 to 70°C

CPAK-100G-ER4F Licensing

No special licensing terms or conditions.

Warranty

1 year warranty, extendable with Cisco SMARTnet support contract.

Installation and Configuration

Hot-swappable CPAK form factor plugs directly into front panel ports of Cisco routing and switching platforms.

Brand

Cisco Systems

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