25G CWDM 1490nm 40km Long Distance Transceiver丨C-LIGHT

25G CWDM 1490nm LC SFP28 transceiver is a long-reach, high-performance module designed for 40km links over single-mode fiber. It utilizes the 1490nm wavelength in the Coarse Wavelength Division Multiplexing (CWDM) spectrum to provide a single-channel, cost-effective solution for 25G Ethernet. This module is ideal for expanding network capacity and reach in metropolitan area networks (MANs), 5G backhaul, and long-distance data center interconnects, while offering digital diagnostics monitoring (DDM) for enhanced network management.

25G CWDM 1490nm 丨40km on SMF丨 No EDFA/ DCM

Fast Shipping丨-40℃ ~ +85℃丨Factory Warrant

CLSFP25GCW40PI-XX

●Supports 25GBASE(25Gb/s) CWDM;

●Lane bit rate 25.78 Gb/s;

●Up to 40km transmission on SMF，after MUX/DeMUX ;

●CWDM 1490nm laser and APD receiver;

●400K High speed I/O electrical interface (25GAUI);

●I2C interface with integrated Digital Diagnostic monitoring;

●SFP28 MSA package with duplex LC connector;

●Single +3.3V power supply; Maximum power consumption 1.2 W;

●Compliant to IEEE 802.3cc Draft3.0, SFF-8402 and SFF-8432;

●Operate case temperature -40℃~85℃

Specification
Part Number	CLSFP25GCW40PI-XX	Vendor	C-LIGHT
Form Factor	SFP28 CWDM	Max Data Rate	25.78Gbps
Wavelength	1490nm	Max Cable Distance	40km
Connector	Duplex LC	Media	SMF
Transmitter Type	EML CWDM	Receiver Type	APD
TX Power	-1~+5dBm	Receiver Sensitivity	＜-18dBm
Power Budget	17dB	Receiver Overload	＜-5dBm
Power Consumption	1.2W	Extinction Ratio	＞6dB
DDM/DOM	Supported	Ext. Temperature Range	-40°C to 85°C
FEC Function	Host FEC Supported	Protocols	MSA Compliant, eCPRI, Access

System Test

Test Video

Related Products
Part Number	25Gbps SFP28 CWDM 40KM	25Gbps SFP28 CWDM 20KM	25Gbps SFP28 CWDM 10km
Max Data Rate	25.8Gbps	25.8Gbps	25.8Gbps
Wavelength	CWDM 1490nm	CWDM 8CH 1470nm~1610nm	CWDM 12CH 1270~1370nm
Connector	Duplex LC	Duplex LC	Duplex LC
Max Cable Distance	40km	20km	10km
Media	SMF	SMF	SMF
Transmitter Type	EML	EML	EML
TX Power	>-1dBm	-2dBm~3dBm	-2dBm~3dBm
Receiver Sensitivity	＜-18dBm	＜-13dBm	＜-11.3dBm
Power Consumption	1.2W	1.5W	1.2W
Ext. Temperature Range	-40℃to 85℃	-40℃to 85℃	-40℃to 85℃

Application Graph