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Shaoxing ZKTel Equipment Co.,Ltd

Address:The Intersection of Sanjiang Road and Paozhong Road, Paojiang Industrial Zone, Shaoxing City, Zhejiang Prov.,China 312071

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1.25G 40km SFP Transceiver

1.25G 40km SFP Transceiver

1.25G BiDi LC 40km SFP Transceiver

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Product Details

Product Features:

BiDi LC SFP Single Mode Transceiver 

Compliant with SFP MSA and SFF-8472 with LC receptacle

1550nm DFB Laser for transmitter and 1310nm PIN+TIA for receiver 


Single +3.3 Power Supply 

Complies with Telcordia (Bellcore) GR-468-CORE 

Typical data rate 1.25Gbps 

Maximal reach 40km 

RoHS-6 compliance 

Product Applications:

Gigabit Ethernet 

Fiber Channel 

Routers, Hubs or Repeaters 


The products are compliant with the Small Form- Factor Pluggable (SFP) Multi-Source Agreement (MSA) and SFF-8472. The Digital Diagnostic Monitoring functions as described in SFF-8472 are provided via an I2C serial interface. The transceiver block diagram is shown as below Fig 1.


The module provides digital diagnostic information of its operating conditions and status, including transmitting power, laser bias, receiver input optical power, module temperature, and supply voltage. Calibration and alarm/warning threshold data are written and stored in internal memory (EEPROM). The

memory map is compatible with SFF-8472, as shown in Fig. 2. The diagnostic data are raw A/D values and must be converted to real world units using calibration constants stored in EEPROM locations 56 – 95 in A2h.


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