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CSFP Transceiver

SOPTO 1.25G 2-Channel BIDI CSFP Transceiver Model

Part No.Description
SPT-W431G-20D1000BASE-BX 2-Channel 1490/1310nm 20km C-SFP Transceiver DDM 0 to 70ºC;-40 to 85ºC
SPT-W341G-20D1000BASE-BX 2-Channel 1310/1490nm 20km C-SFP Transceiver DDM 0 to 70ºC;-40 to 85ºC

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.

SOPTO 1.25G 2-Channel BIDI CSFP Transceiver Main Info

  1. Material: Metal

  2. Weight: 0.02kg

  3. Packing Quantity: 200pcs, 400pcs, 600pcs(accept sample order)

  4. Data Rate: 1.25G

  5. Wavelength: 1310nm/1490nm; 1490nm/1310nm

  6. Fiber Types: Single modo (SM)

  7. Fiber Connector Type: LC

  8. Transmission Mode: Duplex

  9. Transmission Distance: 20km

  10. Laser Type: 1310nm FP laser, 1490nm PIN/TIA receiver; /1490nm DFB laser, 1310nm PIN/TIA receiver

  11. Operating Case Temperature: Standard: 0~70°C; Industrial: -40~85°C

  12. DDM Function: With

  13. Compatible Brands: Cisco, Finisar, HP, Alctel-Lucent, Juniper, Noterl…

Other Info of our CSFP Transceiver

  1. Operating Humidity: 0%~90% RH no condensing

  2. Storage Humidity: 5%~90% RH no condensing

  3. Saturated Optical Power: -3dBm

  4. Average Output Power: -20~ -14dBm

  5. Receiver Sensitivity: <-20dBm

  6. Supply Current: <500mA

  7. Power Supply: +3.3V single power supply

  8. Power Consumption: <1W

  9. Extinction Ratio: 9~17dB

  10. Storage Temperature: -40~85°C

  11. Number of Times of Hot-Pluggable: >200

Performance Feature:

  1. Achieve operational compatibility with conventional SFP:

  2. Conventional SFP will function when plugged into a C-SFP socket

  3. No damage to C-SFP and host board if C-SFP module is plugged into a conventional SFP socket

  4. 2-Channel Bi-directional Optical Transceiver unit with

  5. 2xBi-directional transceivers in 1SFP transceiver package

  6. 20-pin electrical interface and LC receptacle, with pull de-latch

  7. 1250Mbps Typical Data Rate and compliant to 1000Base BX20 IEEE802.3ah

  8. Comply with CSFP MSA Option 2

  9. Digital diagnostic monitoring

  10. Metal enclosure for lower EMI

  11. +3.3V single power supply

  12. LVPECL logic interface simplifies interface to external circuitry

  13. Differential AC 100 ohms Data Input/ Output

  14. 20km reach with 9/125 um single mode fiber (SMF)


  • SDH STM-16 and SONET OC-48 system

  • Fibre Channel

  • FTTH

Comment Imgae
Arrived on time as promised. Also packaged very well.
Comment Imgae
Perfect services and a great company to work with.
Comment Imgae
We are looking for cost effective solution to replace SFPs with CSFP pair. We need industrial grade 1.25 Gbps transceiver capable of operating at 85 degree celsius ambient temperature with natural convection only. Our quantity will be 4K pair of CSFPs per
Comment Imgae
Could I have a quote for price and availability for SPT-W431G-20D. Qty 1-10, 10-100, 100-1000.Thank you Tim Velte
Comment Imgae
Could I have a quote for price and availability for SPT-W431G-20D. Qty 1-10, 10-100, 100-1000.Thank you Tim Velte
Comment Imgae
Could I have a quote for price and availability for SPT-W431G-20D. Qty 1-10, 10-100, 100-1000.Thank you Tim Velte
Comment Imgae
Hi can you tell me if there's a supplier in south africa
Comment Imgae
Hi Can you please send me a cat of all your products
Comment Imgae

This product works flawlessly. The setup couldn't have been anymore simpler or straightforward.