- Fiber Optic Transceiver Module
- High Speed Cable
- Fiber Optical Cable
- Fiber Optical Patch Cords
- Splitter CWDM DWDM
- PON Solution
- FTTH Box ODF Closure
- PCI-E Network Card
- Network Cables
- Fiber Optical Adapter
- Fiber Optical Attenuator
- Fiber Media Converter
- PDH Multiplexers
- Protocol Converter
- Digital Video Multiplexer
- Fiber Optical Tools
- Compatible
1.25G Compact SFP Transceiver Dual BIDI
Sopto Compact small form-factor pluggable CSFP transceivers and a compact small form-factor CSFF transceivers support network systems, especially those deploying single fiber bidirectional transceivers in high density applications.
The CSFP transceivers are high performance, cost effective modules supporting 2.488Gbps and 20km transmission distance with SMF. The transceiver consists of three sections: a laser transmitter, a photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements. The CSFP MSA defines a transceiver mechanical form-factor with latching mechanism and a host board, SFP-like, electrical edge connector and cage. The CSFF MSA also defines a transceiver mechanical form-factor.
The dual-channel CSFP is compatible with the standard SFP cage. The single-channel CSFP and CSFF are half the size of the industry-standard SFP and SFF packages. The CSFF design is modular to enable configurations of integrated 2ch modules. In future Sopto will develop 4ch CSFP modules. These highly integrated compact transceiver modules will enable network system vendors to increase port density and data throughput, while reducing network equipment cost.
Compact SFP Transceiver Order information
Part No. | Parameters | Laser | Temperature | Get Price | |
SOPTO 1.25G Compact SFP Dual BIDI Transceiver | |||||
SPT-W431G-20D | Compact SFP hot swappable transceiver 1.25G 20km Single Mode Fiber (SMF) 1490nm TX; 1310nm RX LC | DFB | 0~70°C; -40~85ºC | ||
SPT-W341G-20D | Compact SFP hot swappable transceiver 1.25G 20km Single Mode Fiber (SMF) 1310nm TX; 1490nm RX LC | FP | 0~70°C; -40~85ºC |
Compact SFP Transceiver Features
Data Rate: 1.25G
Wavelength: 1310nm/1490nm; 1490nm/1310nm
Fiber Types: Single modo (SM) Fiber
Connector Type: Dual LC
Transmission Mode: Duplex
Transmission Distance: 20km
Laser Type:
1310nm FP laser, 1490nm PIN/TIA receiver;
1490nm DFB laser, 1310nm PIN/TIA receiverOperating Case Temperature:
Standard: 0~70°C;
Industrial: -40~85°CDDM Function: With
Compatible Brands: Cisco, Finisar, HP, Alctel-Lucent, Juniper, Noterl…
Compact SFP Transceiver Application
SDH STM-16 and SONET OC-48 system
Fibre Channel
FTTH
Superiority
- low price
- 1-3 Years Warranty
- Standarized Design
- High-quality raw materials
- A Wide range of selection and large stock
- Rigorous and comprehensive product testing
- Widely compatible with all brand equipment

The SFP transceiver is not standardized by any official standards body, but rather is specified by a multi-source agreement (MSA) among competing manufacturers.
As a practical matter, some networking equipment manufacturers engage in vendor lock-in practices whereby they deliberately break compatibility with "generic" SFPs by adding a check in the device's firmware that will enable only the vendor's own modules.
For example, in 2003 during a routine Internet Operating System (IOS) update on their Catalyst line of switches, Cisco added a feature that would cause the switch to reject optical modules that were not deemed ‘Cisco brand.
Sopto is a professional manufacture and supplier of fiber optic transceivers. All our optical transceivers are tested strictly before delivery and fully compatible with major bands’ equipment.
Sopto provides GBIC, SFP, SFP+, X2, XENPAK, XFP and QSFP+ transceivers, supporting different data rate such as 1G, 2G, 4G, 8G, 10G, 40G, etc. These transceivers can be operated with network switches, routers, firewalls, digital return transceivers and other devices of all leading vendors, such as Cisco, HP, Juniper, H3C, 3COM, D-link, etc.
As a third party vendor, Sopto can supply transceiver modules with good quality and low price for our customers.























Fiber Optic Transceiver Customized Example-OEM
What is OEM?
OEM stands for Original Equipment Manufacturer, refers to companies that make products for others to repackage and sell. OEMs are manufactures who resell another company’s products under their own name and branding.
Sopto Provides OEM Service
Sopto can provide OEM service for our customers. All our optical transceivers are produced by our own factory and 100% compatible with Cisco, HP and other brands’ devices. We also provide customize optical transceivers to fit your specific requirements with high quality and low price. If you need OEM service, please give priority to our products. For more information, please contact our sales staff on-line by e-mail or live-chat. Please call us at 0086-755-23018340 or email to sales@sopto.com
Customized Example | ||||
Logo | Model | SN Code | Compatible Brand | Package |
![]() | SPT-XXXX-XX | SPXXXXXXXXX | CISCO | Package with logo |
Sopto provides customized service. Tell us your requirement on logo,model,SN code,compatible brand and package. |