1000BASE-BX 1310nm-TX/1490nm-RX SFP Module 20km DOM Transceiver Module 1.25Gbps

Basic Information
Place of Origin: China
Brand Name: GIGAOPTO
Certification: CE, FCC, ROHS, ISO9001, ISO14000, MSDS, REACH, CP65, TUV, UL
Model Number: GTS-B3412-20DC
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 Factor: SFP Data Rate: 1250Mbps
Wavelength: 1310nm-TX/1490nm-RX Optical Connector: LC Simplex
Optical Components: FP BiDi Receiver Sensitivity: < -20dBm
Max Link Length: 10km (6.2 Miles)
High Light:

SFP Module 20km


SFP DOM Transceiver Module


SFP Module 1.25 G SM 20km 1310nm

Product Description

Cisco Linksys Compatible 1000BASE-BX BiDi SFP Transceiver Module 1.25Gbps 20km Simplex LC 1310nm-TX/1490nm-RX SMF DOM
The GIGAOPTO's GTS-B3412-20DC transceiver provides up to 20km transmission distance of 1000BASE-BX throughput over single-mode fiber (SMF) using 1310nm in transmitter side and 1490nm in receiver side via LC simplex connectors. It meets the Small Form Pluggable (SFP) industry standard package utilizing an integral LC-Bi-dirictional optical interface connector.
The transceiver consists of five sections: the LD driver, the limiting amplifier, the digital diagnostic monitor, the 1310nm FP laser (the 1490nm DFB laser)and the PIN/TIA . This Bi-directional SFP transceiver is designed for 1000BASE-BX Gigabit Ethernet and 1G Fibre Channel application.
The SFP module is a Class 1 laser product that complies with FDA/CDRH and IEC-60825 standards. It fully complies with the SFP Multi-Source Agreement (MSA) and can be used on the MSA compliant networking equipment.


  • Operating data rate up to 1.25Gb/s
  • BIDI LC/UPC type pluggable optical interface
  • Single +3.3V power supply and TTL logic interface
  • Metal enclosure, for lower EMI
  • Class 1 FDA and IEC60825-1 Laser Safety compliant
  • Support Digital Diagnostic Monitor interface
  • A type: 1310nm FP TX /1490nm RX

B type: 1490nm DFB TX /1310nm RX

  • Up to 20km on 9/125µm SMF
  • Low power dissipation
  • Operating temperature range:

Commercial: 0 ~ 70℃

Extended: -20℃ ~ 85℃

Industrial: -40℃ ~ 85℃

  • Compliant with IEEE 802.3z
  • RoHS Compliant
  • Compliant with SFP MSA specification


Compatible Brand Cisco Linksys Compatible P/N MGBBX1
Product Packaging SFP Speed 1.25G
Optical Connector Single LC Reach 20 Kilometer
DDM/DOM Support Yes Media Single Mode
Centre Wavelength 1310nm-TX/1490nm-RX Temperature Range Standard 0 to 70°C
Power Consumption 1W Relative Humidity 5%-95%
Optical Components FP BiDi Power Supply Voltage 3.3V
Receiver Type PIN Total Supply Current 300mA
Transmitter Output Power -9~-3dBm RX Sensitivity < -20dBm
Extinction Ratio >9dB Saturation >-3dBm
Protocols Fast Ethernet, Gigabit Fibre Channel, MSA Compliant, IEEE 802.3z



All of Gigaopto's optical modules are open-source and can be coded to be fully compatible with many highly popular optical devices. For this product (1000BASE-BX-U BiDi SFP TX1310nm/RX1490nm 20km) please refer to the following compatibility table. If you would like more information about compatibility, please feel free to contact us.


Compatible Brand Compatible Part Number Compatible Brand Compatible Part Number
Juniper SFP-GE20KT13R14 Dell SFP-GE-BX20U-1310
Brocade E1MG-BXU-20 Extreme MGBIC-BX20-U
Alcatel-Lucent SFP-GIG-BX-U20 HuaWei SFP-GE-20-SM1310

Ordering Information


P/N Description Data Rate Wavelength Reach Laser Type TX Power
GTS-B3412-20DC 1000BASE-BX-U BiDi SFP 1.25Gbps 1310nm-TX/1490nm-RX 20km FP -9~-3dBm
GTS-B4312-20DC 1000BASE-BX BiDi SFP 1.25Gbps 1490nm-TX/1310nm-RX 20km DFB -9~-3dBm
GTS-B3512-20DC 1000BASE-BX BiDi SFP 1.25Gbps 1310nm-TX/1550nm-RX 20km FP -9~-3dBm
GTS-B5312-20DC 1000BASE-BX BiDi SFP 1.25Gbps 1550nm-TX/1310nm-RX 20km DFB -9~-3dBm



Pin Definition


1000BASE-BX 1310nm-TX/1490nm-RX SFP Module 20km DOM Transceiver Module 1.25Gbps 0



Typical Application Circuit


1000BASE-BX 1310nm-TX/1490nm-RX SFP Module 20km DOM Transceiver Module 1.25Gbps 1



Package Outline

Dimensions are in millimeters. All dimensions are ±0.1mm unless otherwise specified. (Unit: mm)


1000BASE-BX 1310nm-TX/1490nm-RX SFP Module 20km DOM Transceiver Module 1.25Gbps 2

Contact Details

WhatsApp : +8615989585901