25G BiDi SFP28 Optical Transceiver Single Mode 20km 1330nm TX / 1270nm RX

Basic Information
Place of Origin: Shenzhen, China
Brand Name: Gigaopto
Certification: CE, FCC, ROHS, ISO9001, ISO14000, MSDS, REACH, CP65, TUV, UL
Model Number: GTS-B32B1-20DI
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: 50,000pcs/month
Detail Information
Product Name: 25G BiDi 20km ELR Bit-Rate(Gb/s): 25.78Gb/s
Wavelength: TX1330nm/RX1270nm DDM/DOM: Supported
CDR: Dual Connector: LC Simplex
Temperature: -40 To 85°C Keywords: SFP28 Bidirectional Transceiver, SFP28 20KM
Distance: 20km
High Light:

BiDi SFP28 Optical Transceiver


SFP28 Optical Transceiver Single Mode


25G SFP28 Transceiver

Product Description

Industrial Temperature 25.78Gbps SFP28 BIDI eLR Transceiver Single Mode 20km 1330nm TX / 1270nm RX Integrated 

Double your bandwidth by using only one fiber for transmit and receive

For 25GBASE-LR Ethernet links

Integrated Clock-Data-Recovery (CDR)

Supported Data Rates: 25.78 Gbit/s

Up to 20 km via Singlemode OS2

LC-Simplex Connector

Operating Temperature from -40°C to 85°C



  • Real Time Digital Diagnostic Monitoring
  • Low Power Consumption <1.2W
  • -40℃ to 85℃ Operating Case Temperature Range
  • Single 3.3V±5% Power Supply
  • 1270nm DFB laser and PIN photodiode,Up to 20 km Transmission Distance
  • Compliant with SFP28 MSA with simplex LC connector
  • Supports up to 25.78Gbps bit rates
  • Hot-pluggable SFP28 footprint
  • Compatible with RoHS



Gigaopto’s SFP28 BiDi eLR transceiver is a small form factor pluggable module for bi-directional serial optical data communications such as 25G Ethernet and CPRI Option 10. It provides 25GBase throughput up to 20km over single mode fiber (SMF) using a wavelength of 1330nm-TX/1270nm-RX via LC simplex connector.

The transmitter section uses a 1330nm multiple quantum well DFB laser and is a class 1 laser compliant according to International Safety Standard IEC-60825. The receiver section uses an integrated InGaAs detector preamplifier (IDP) mounted in an optical header and a rate selection clock data recovery (CDR) IC. All transceivers are Class 1 laser products that comply with FDA/CDRH and IEC-60825 standards.

It is with the SFP 20-pin connector to allow hot-plug capability. Digital diagnostics functions are available via a 2-wire serial interface, as specified in SFF-8472,which provides real-time monitoring of the transceiver temperature, laser bias current, optical power, received optical power and transceiver supply voltage.

Operating Temperature Industrial grade ranged from -40 to 85ºC. It is made with robust and reliable components to meet the needs of Industrial Ethernet application under harsh environmental conditions.





Package SFP28 Bi-directional Bit Rate(Gb/s) 25.78Gb/s
Wavelength Tx-1330nm/Rx-1270nm Max Fiber Length 20km on G.652
Interface Simplex-LC/UPC Cable Type single mode fiber
Laser Type DFB BiDi Receiver Type PIN
Average Launch Power -4~2.5dBm Sensitivity <-12dBm
Power Budget (dB) 8dB Receiver Saturation >2.5dBm
Power Dissipation ≤1.2W Ext.Ratio >3.5dB
DOM Supported FEC Function Not Supported
CDR TX & RX Dual Temperature Range -40 to 85°C (-40 to 185°F)
OEM/ODM Supported Warranty 36 months
Protocols SFF-8472, SFF-8402, SFF-8432, SFF-8431, CEI-28G-VSR
Compliance IEC/EN 61000-4-2,IEC-60825,FDA 21CFR 1040.10 and 1040.11,RoHS





Gigaopto's optical transceivers are 100% compatible with all major switch brands and will not cause damage to OEM devices.

In order to ensure the quality and compatibility of our products, each product is carefully tested on the corresponding equipment before delivery to customers.

For this GTS-B32B1-20DI compatibility, please refer to the P/N correspondence table. If the brand and part number you are looking for is not listed below, please let us know and we will be delighted to provide you with more details.


Corresponding Compatible Brand/Part Number
Brand Part Number Brand Part Number
Gigaopto GTS-B32B1-20DI Juniper SFP28-25G-BX-I
Cisco SFP-25GBX-D-20-I Arista SFP-25G-BD-I
Brocade 25G-SFP28-BXD-I Dell SFP28-25G-BX-I
H3C SFP28-25G-BX20-I HW 25GBase-BX-D-I
Intel SFP28-25G-BX20-I    



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 -8.4~2.4 < -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 <-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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