1000BASE-BX SFP Small Form Factor Pluggable SFP Devices TX1310nm/RX1550nm

Basic Information
Place of Origin: China
Brand Name: GIGAOPTO
Certification: CE, FCC, ROHS, ISO9001, ISO14000, MSDS, REACH, CP65, TUV, UL
Model Number: GTS-B3512-20DC
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
Name: SFP BIDI Transceiver Form Factor: SFP
Data Rate: 1000Mbps Connector Type: Simplex LC
Transmitter Type: SFP BiDi Centre Wavelength: 1310nm-TX/1550nm-RX
Cable Distance: 20km (12.4 Miles) Transceiver Type: BX
High Light:

Small Form Factor Pluggable SFP Devices


SFP Small Form Factor Pluggable

Product Description

Cisco Compatible 1000BASE-BX BiDi SFP Transceiver Module 1310nm-TX/1550nm-RX 1.25Gbps 20km SMF DOM Simplex LC




The GIGAOPTO's GTS-B3512-20DC transceiver is a single fiber bi-direction 1000Mbps Small Form-factor Pluggable (SFP) BIDI module for use in 1000BASE Ethernet. This SFP BX20 module provides 1000Base-BX throughput up to 20km transmission distance over single-mode fiber (SMF) using a wavelength of 1310nm-Tx/1490nm-Rx via an LC connector.

The transceiver is easy to install, hot-swappable, and has been programmed, uniquely serialized, and tested for data traffic and applications to ensure it is initialized and performs identically. Digital optical monitoring (DOM) support is also present to allow access to real-time operating parameters.


The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472 specifications.



  • Supports up to 1.25Gbps bit rates
  • Simplex LC optical connector
  • Built-in digital diagnostic via 2-wire interface
  • Hot-pluggable SFP footprint
  • Type A:1310nm FP transmitter /1550nm receiver

Type B:1550nm DFB transmitter/1310nm receiver

  • International Class 1 laser safety certified
  • Metal with Lower EMI
  • Excellent ESD protection
  • 20km with 9/125 µm SMF
  • Single 3. 3V power supply and TTL logic interface
  • BIDI LC/UPC type pluggable optical interface
  • Compliant with Digital Diagnostic Monitor Interface SFF-8472
  • Operating temperature range:

Commercial: 0℃~ 70℃

Extended: -20℃ ~ 85℃

Industrial: -40°C ~ 85°C

  • RoHS compliant and lead-free


  • Fast Ethernet
  • 1000Base-BX Ethernet
  • Router/Server Interface
  • Switched Backplane Applications



Compatible Brand CISCO Compatible PN GLC-BX-20U
Form Factor Small Form Factor Pluggable Speed 1000Base
Connector Type Simplex LC Max Distance 20km
DOM Yes Fiber Mode SMF
Ambient Humidity 5%-70% Non-condensing Operating Temperature


0 to 70°C (32 to 158°F)

Wavelength 1310nm-TX/1550nm-RX Power Supply Voltage 3.3V
Power Consumption 1W Current 300mA
Transmitter Type FP BiDi Receiver Type PIN
TX Optical Power -9~-3dBm Sensitivity <-20dBm
ER >9dB Overload >-3dBm
Protocols Fast Ethernet, Gigabit Fibre Channel, IEEE 802.3z, MSA Compliant




Each Gigaopto’s optical transceiver is tested in the host device to verify interoperability, and we promise 100% full compatibility on the specified device with a 3-year warranty.
For this (1000BASE-BX BiDi SFP TX1310nmRX/1550nm 20km), please refer to the P/N correspondence table. If you are interested in knowing more compatibility, you are always welcome to contact us.


Compatible Brand Compatible Part Number Compatible Brand Compatible Part Number
CISCO GLC-BX-20U Dell SFP-GE-BX20-1310
Juniper SFP-GE20KT13R15 Extreme MGBIC-BX20-D-1310
Brocade E1MG-1G-BXU-20 HuaWei SFP-GE-20-SM1310-D



Ordering Information


Part Number Description Data Rate Wavelength Reach Laser Type Fiber Type
GTS-B3412-20DC 1000BASE-BX-U BiDi SFP 1.25G 1310nm-TX/1490nm-RX 20km FP SMF
GTS-B4312-20DC 1000BASE-BX BiDi SFP 1.25G 1490nm-TX/1310nm-RX 20km DFB SMF
GTS-B3512-20DC 1000BASE-BX BiDi SFP 1.25G 1310nm-TX/1550nm-RX 20km FP SMF
GTS-B5312-20DC 1000BASE-BX BiDi SFP 1.25G 1550nm-TX/1310nm-RX 20km DFB SMF



Pin Definition


1000BASE-BX SFP Small Form Factor Pluggable SFP Devices  TX1310nm/RX1550nm 0



Typical Application Circuit


1000BASE-BX SFP Small Form Factor Pluggable SFP Devices  TX1310nm/RX1550nm 1



Package Outline

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


1000BASE-BX SFP Small Form Factor Pluggable SFP Devices  TX1310nm/RX1550nm 2

Contact Details

WhatsApp : +8615989585901