CWDM SFP28 Optical Transceiver DOM 1330nm 1350nm 1370nm SMF 30km Duplex LC

Basic Information
Place of Origin: Shenzhen, China
Brand Name: Gigaopto
Certification: CE,FCC,RoHs, TUV,UL
Model Number: GTS-C33B1-30DC
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: 5,000pcs/month
Detail Information
Product Name: 25Gb/s CWDM Optical Transceiver Form Factor: SFP28
Wavelength: CWDM 1270nm ~ 1370nm Connector: Dual LC/UPC
Max Cable Distance: 30km Keywords: 25G SFP28 CWDM ER Lite, 25G CWDM 30km
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CWDM SFP28 Optical Transceiver


SFP28 Optical Transceiver DOM


CWDM Optical Transceiver

Product Description

25G CWDM 1270nm/1290nm/1310nm/1330nm/1350nm/1370nm SFP28 SMF 30km Duplex LC Optical Transceiver Module DOM EML/APD



Functional Specification


Form Factor SFP28 Max Data Rate 25.78Gb/s
Wavelength CWDM (1270~1370)nm Reach 30km
Connector Dual LC Fiber Type single-mode fiber
Laser Type DML CWDM PD Type APD
Supply Voltage 3.3V Supply Current 450mA
TX Power 0~6dBm Receiver Sensitivity <-19dBm
Power-budget 19dB Receiver Overload >-5dBm
Power Consumption ≤1.5W ER. >4.0dB
DDM/DOM Yes FEC Function N/A
CDR TX and RX Environment Operating:0 to 70°C (32 to 158°F)
OEM/ODM Supported Warranty 3-year
Protocols MSA Compliant, CPRI, eCPRI
Compliance IEC/EN 61000-4-2,IEC-60825, FDA 21CFR 1040.10 and 1040.11,RoHS



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


This 25GBase CWDM 1270nm~1370nm series SFP28 transceiver provides 25GBase-CWDM throughput up to 30km over single mode fiber (SMF) via LC duplex connector.

The full-duplex SFP28 transceiver features highly reliable DML transmitter and APD photo detector to offer high performance interconnection at 25 Gb/s data rate.

Built-in Digital Diagnostic Monitoring (DDM) support is present for real-time performance monitoring via 2-wire Interface (TWI/I2C).

This transceiver is fully compliant with SFP28 Multi-Source Agreement (MSA), IEEE 802.3cc 25GBASE-ERL and 25GAUI standard.



Ordering Information


Part Number Description Wavelength Max Reach
GTS-C27B1-30DC 25G SFP28 CWDM DML CWDM + APD 1270nm 30km
GTS-C29B1-30DC 25G SFP28 CWDM DML CWDM + APD 1290nm 30km
GTS-C31B1-30DC 25G SFP28 CWDM DML CWDM + APD 1310nm 30km
GTS-C33B1-30DC 25G SFP28 CWDM DML CWDM + APD 1330nm 30km
GTS-C35B1-30DC 25G SFP28 CWDM DML CWDM + APD 1350nm 30km
GTS-C37B1-30DC 25G SFP28 CWDM DML CWDM + APD 1370nm 30km





  • Hot pluggable SFP28 form factor
  • Data rate up to 25.78Gbps
  • Suitable for use in 1270nm-1370nm CWDM systems (20nm channel)
  • DML transmitter, APD photo receiver
  • Duplex LC optical connector
  • Link distances up to 30km on 9/125m SMF without FEC
  • Up to 40km on SMF with FEC
  • Built-in digital diagnostic via 2-wire interface
  • Single 3.3V power supply voltage
  • Power consumption < 1.5W
  • Operating temperature range: 0 to 70°C
  • Compliant with SFF-8402, SFF-8432, SFF-8419, SFF-8472
  • Compliant with IEEE 802.3cc 25GBASE-ERL
  • Compliant with RoHS, REACH, CE, FCC standards




  • High-speed storage area networks
  • CPRI 10





All of Gigaopto's 25G CWDM 30km Transceivers are open sourced,can be coded to be fully compatible with mainstream devices, please refer to the following form( for example in 1330nm 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-C33B1-30DC Arista SFP-25G-CW-1330-30
Cisco CWDM-SFP25G-1330-30 Juniper EX-SFP-25GE-CWE33-30
Mellanox CWDM-SFP25G-30S Brocade XBR-SFP25G1330-30
HW CWDM-SFP25G-1330-30    



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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