CWDM SFP Transceiver 1270nm-1610nm 1000BASE SMF DOM Duplex LC Optical Transceiver Module

Basic Information
Place of Origin: Shenzhen, China
Brand Name: GIGAOPTO
Certification: CE, FCC, ROHS, ISO9001, ISO14000, MSDS, REACH, CP65, TUV, UL
Model Number: GTS-C2712-40DC
Minimum Order Quantity: 1 pcs
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 working days
Payment Terms: T/T, Western Union
Supply Ability: 100,000pcs / month
Detail Information
Form Type: SFP CWDM Data Transfer Rate: 1.25Gb/s
Wavelength: 1270~1610nm RX Sens: <-24dBm
Max Distance: 40km (24.9 Miles) TX Power: -5~0dBm
Power Budget: 19dB
High Light:



CWDM SFP Transceiver


Duplex LC Optical Transceiver Module

Product Description

1.25Gbps 40km CWDM SFP 1270-1610nm 1000BASE SMF DOM Duplex LC Optical Transceiver Module





The GIGAOPTO's GTS-C2712-40DC series transceivers are high performance, cost effective modules supporting data rate of 1.25Gbps and 40km transmission distance with single mode fiber (SMF) via an LC connector.There are 18 center wavelengths available from 1270nm to 1610nm with each step 20nm.


The transceiver consists of three sections: a CWDM DFB laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements. 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 SFP Multi-Source Agreement (MSA), 1000BASE-CWDM and SERDES standard, and can be used on MSA compliant SFP ports of optical networking equipment.



  • Single 3.3V power supply voltage
  • Metal with lower EMI
  • Data rate up to 1.25Gbps
  • Link distances up to SMF 40km
  • Compliant with SFP MSA and SFF-8472 with duplex LC receptacle
  • Low power dissipation <1W typically
  • 18 channel CWDM 1270nm~1610nm DFB laser and PIN receiver
  • Hot-pluggable SFP footprint
  • Real Time Digital Diagnostic Monitoring
  • Excellent ESD protection
  • Ambient temperature range:

Industrial: -40°C~85°C (-40 to 185°F)

Commercial: 0°C~70°C (32 to 158°F)

  • Compliant with IEEE 802.3z 1000BASE-CWDM
  • Compliant with RoHS6



  • 1.063Gbps Fiber Channel
  • CWDM Networks
  • Gigabit Ethernet
  • 1.25Gbps optical systems
  • Switched Backplane Applications




Product Packaging SFP Data Rate 1000Mbps
Optical Receptacle Type Dual LC Transmission Distance 40km (24.9 miles)
Digital Diagnostic Monitoring Supported Fiber Mode SMF
Total System Budget >19dB Commercial Temp. 0 to 70°C (32 to 158°F)
Storage Temperature -40 to 85°C Relative Humidity 0 to 85°C
Center Wavelength 1270~1610nm Power Supply Voltage 3.3V
Power Consumption <1W Supply Current 250mA
Laser Type DFB CWDM Receiver Type PIN
Average Output Power -5~0dBm Sensitivity <-24dBm
ER >9dB

Input Saturation


Protocols MSA Compliant


Notice: When the long reach transceiver is used in short distance transmission, please matched with appropriate

attenuator according to the table.

Distance ≤10km ≤20km
Attenuator 10dB 7dB



Ordering Information


Part Number Description - 1.25G SFP CWDM CWDM/ CH Reach (km) Connector Latch Color
GTS-C2712-40DC 1.25Gb/s SFP CWDM 1270nm SMF LR 1270nm / -C27 40km LC Duplex Light Purple
GTS-C2912-40DC 1.25Gb/s SFP CWDM 1290nm SMF LR 1290nm/ -C29 40km LC Duplex Sky Blue
GTS-C3112-40DC 1.25Gb/s SFP CWDM 1310nm SMF LR 1310nm/ -C31 40km LC Duplex Yellow Green
GTS-C3312-40DC 1.25Gb/s SFP CWDM 1330nm SMF LR 1330nm/ -C33 40km LC Duplex Yellow Ocher
GTS-C3512-40DC 1.25Gb/s SFP CWDM 1350nm SMF LR 1350nm/ -C35 40km LC Duplex Pink
GTS-C3712-40DC 1.25Gb/s SFP CWDM 1370nm SMF LR 1370nm/ -C37 40km LC Duplex Beige
GTS-C3912-40DC 1.25Gb/s SFP CWDM 1390nm SMF LR 1390nm/ -C39 40km LC Duplex White
GTS-C4112-40DC 1.25Gb/s SFP CWDM 1410nm SMF LR 1410nm/ -C41 40km LC Duplex Silver
GTS-C4312-40DC 1.25Gb/s SFP CWDM 1430nm SMF LR 1430nm/ -C43 40km LC Duplex Black
GTS-C4512-40DC 1.25Gb/s SFP CWDM 1450nm SMF LR 1450nm/ -C45 40km LC Duplex Yellow Orange
GTS-C4712-40DC 1.25Gb/s SFP CWDM 1470nm SMF LR 1470nm / -C47 40km LC Duplex Gray
GTS-C4912-40DC 1.25Gb/s SFP CWDM 1490nm SMF LR 1490nm/ -C49 40km LC Duplex Violet
GTS-C5112-40DC 1.25Gb/s SFP CWDM 1510nm SMF LR 1510nm/ -C51 40km LC Duplex Blue
GTS-C5312-40DC 1.25Gb/s SFP CWDM 1530nm SMF LR 1530nm/ -C53 40km LC Duplex Green
GTS-C5512-40DC 1.25Gb/s SFP CWDM 1550nm SMF LR 1550nm/ -C55 40km LC Duplex Yellow
GTS-C5712-40DC 1.25Gb/s SFP CWDM 1570nm SMF LR 1570nm/ -C57 40km LC Duplex Orange
GTS-C5912-40DC 1.25Gb/s SFP CWDM 1590nm SMF LR 1590nm/ -C59 40km LC Duplex Red
GTS-C6112-40DC 1.25Gb/s SFP CWDM 1610nm SMF LR 1610nm/ -C61 40km LC Duplex Brown




Gigaopto manufactures and stocks a full range of optical transceivers up to 100G. All of our optical transceiver modules are quality-tested for compatibility with the target switch environment and are 100% compatible with major brands such as Cisco, Brocade, HP, Juniper, Huawei, Alcatel-Lucent, Extreme, Arista, etc. and offer a 3-year warranty.
For this (1.25G SFP CWDM 40km), please refer to the P/N correspondence table (e.g.1270nm wavelength channel). If you need more compatibility, please don’t hesitate to let us know.


Corresponding Compatible Brand/Part Number
Brand P/N Brand P/N
Arista SFP-1G-CW-1270 Juniper SFP-GE40KCW1270-ET
Brocade E1MG-CWDM40-1270 Dell CWDM-SFP-1270
Extreme CWDM-SFP-1270 HuaWei 0231A4-1270
Netgear CWDM-SFP-1270 HPE SFP40K-CW1270
Alcatel-Lucent SFP-GIG-27CWD40 H3C SFP-GE-LH40-SM1270-CW

Contact Details

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