25G SFP28 CWDM Transceiver 1270nm 1290nm 1310nm SMF 10km Duplex LC

Basic Information
Place of Origin: Shenzhen, China
Brand Name: Gigaopto
Certification: CE,FCC,RoHs, TUV,UL
Model Number: GTS-C27B1-10DC
Minimum Order Quantity: 1
Price: negotiable
Packaging Details: Single Package,10 or 20pcs per Tray,30 or 50 or 100pcs per box, 400 or 600pcs per carton
Delivery Time: 1-5 work days
Payment Terms: T/T, L/C, Western Union
Supply Ability: 10,000pcs/month
Detail Information
Product Name: 25G CWDM Optical Transceiver Form Factor: SFP28
Data-Rate: 25G Wavelength: CWDM 1270/1290/1310/1330/1350/1370
Connector: LC Duplex Max Distance: 10km
Keywords: 25G CWDM 10km SFP, 25G SFP28 CWDM LR , Dual CDR,
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25G SFP28 CWDM Transceiver


25G SFP Transceiver

Product Description

25G CWDM 1270nm/1290nm/1310nm/1330nm/1350nm/1370nm SFP28 SMF 10km Duplex LC Optical Transceiver Module DOM


Products Description of 25G SFP28 CWDM SFP28 (1270~1370)nm Series


This CWDM 1270nm~1370nm series transceiver is designed for use in 25Gb/s data rate over single-mode fiber for link length 10km via an LC duplex optical connector.

The transceivers are optimized for high performance and cost effective to supply customers the best solutions for 25Gb/s single lane optical links.

It is with the SFP+ 20-PIN connector to allow hot plug capability. Digital diagnostic functions are available via an 12C. It has built-in clock and data recovery(CDR).

It is fully compliant with the SFP28 MSA, CPRI and eCPRI standard.


Functional Specification


Form Factor SFP28 Data Rate 25.78Gbps
Wavelength CWDM (1270~1370)nm Fiber Link Distance 10km
Connector LC Duplex Fiber Type SMF
TX Optical Type DFB CWDM RX Optical Type PIN
Supply Voltage 3.3V Supply Current 400mA
TX Average Power 0~6dBm Receiver Sensitivity <-14dBm
Powerbudget 14dB Receiver Overload > 0.5 dBm
Power Consumption ≤1.3W Extinction Ratio >3.5dB
Digital Diagnostic Yes FEC Function N/A
CDR Dual TX and RX Environment Operating:0 to 70°C (32 to 158°F)
OEM/ODM Supported Warranty 3-Year
Protocols 25G Ethernet,25G CRPI
Compliance IEC/EN 61000-4-2,IEC-60825,FDA 21CFR 1040.10 and 1040.11, RoHS



Ordering Information


Part Number Description Wavelength Channel Max Distance
GTS-C27B1-10DC 25Gb/s SFP28 SMF DFB CWDM + PIN LC,DOM 1270nm 10km
GTS-C29B1-10DC 25Gb/s SFP28 SMF DFB CWDM + PIN LC,DOM 1290nm 10km
GTS-C31B1-10DC 25Gb/s SFP28 SMF DFB CWDM + PIN LC,DOM 1310nm 10km
GTS-C33B1-10DC 25Gb/s SFP28 SMF DFB CWDM + PIN LC,DOM 1330nm 10km
GTS-C35B1-10DC 25Gb/s SFP28 SMF DFB CWDM + PIN LC,DOM 1350nm 10km
GTS-C37B1-10DC 25Gb/s SFP28 SMF DFB CWDM + PIN LC,DOM 1370nm 10km



















  • High-speed Servers
  • High-performance Computing Clusters
  • eCPRI , CPRI
  • Ethernet Switches
  • 25G GE LR




All of Gigaopto's 25G CWDM 10km Transceivers are open sourced,can be coded to be fully compatible with mainstream devices, please refer to the following form( for example in 1270nm Wavelength channel), for more products compatibility, please feel free to contact us.


Corresponding Compatible Brand/Part Number
Compatible Brand Part Number Compatible Brand Part Number
Gigaopto GTS-C27B1-10DC Arista SFP-25G-CW-1270-10
Cisco CWDM-SFP25G-1270-10 Juniper EX-SFP-25GE-CWE27-10
Mellanox CWDM-SFP25G-10SP Brocade XBR-SFP25G1270-10
HW CWDM-SFP25G-1270-10    



For More of our SFP28 25GBASE Transceiver Series, please refer to the following table


Part Number Description Wave Length Transmission Fibre Type TX Power (dBm) Rx Sens. (dBm)
GTS-L08B1-01DC 25G SR 850nm 100m MMF -6.4~2.4 < -10.3
GTS-L08B1-03DC 25G eSR 850nm 300m MMF -6.4~2.4 < -10.3
GTS-L08B1-01MC 25G CSR Dual Rate 10/25G 850nm 100m MMF -5~2.4 <-10.3
GTS-L13B1-10DC 25G LR 1310nm 10km SMF -4.5~2.5 <-11.4
GTS-L13B1-30DC 25G ER Lite 1310nm 30km SMF 0~6 <-19
GTS-L13B1-40DC 25G ER 1310nm 40km SMF 0~6 <-19
GTS-B23B1-10DC 25G BD LR 1270/1330nm 10km SMF -2~4 <-13
GTS-B32B1-10DC 25G BD LR 1330/1270nm 10km SMF -2~4 <-13
GTS-B23B1-20DC 25G BiDi eLR 1270/1330nm 20km SMF 0~6 <-14
GTS-B32B1-20DC 25G BiDi eLR 1330/1270nm 20km SMF 0~6 <-14
GTS-B23B1-40DC 25G BD ER 1270/1330nm 40km SMF 0~6 <-18
GTS-B32B1-40DC 25G BD ER 1330/1270nm 40km SMF 0~6 <-18
GTS-CxxB1-10DC 25G CWDM LR C27/C29/C31/C33/C35/C37 10km SMF 0~6 <-14
GTS-CxxB1-10DC 25G CWDM LR C47/C49/C51/C53/C55/C57 10km SMF 0~6 <-14
GTS-CxxB1-30DC 25G CWDM ER Lite C27/C29/C31/C33/C35/C37 30km SMF 0~6 <-19
GTS-CxxB1-30DC 25G CWDM ER Lite C47/C49/C51/C53/C55/C57 30km SMF 0~6 <-19
GTS-DxxB1-10DC 25G DWDM LR 100GHz C17~C61 10km SMF -2~6 <-12
Note OEM/ODM supported

Contact Details

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