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1.25G Sfp Bidirectional Transceiver Fiber Optical 1550nm/1490nm Wavelenth

1.25G Sfp Bidirectional Transceiver Fiber Optical 1550nm/1490nm Wavelenth

1.25G Sfp Bidirectional Transceiver Fiber Optical 1550nm/1490nm Wavelenth

Product Details:

Place of Origin: Shenzhen China
Brand Name: Transcom
Certification: ISO FCC CE RoSH
Model Number: TS-SF-BL45(54)12-80D

Payment & Shipping Terms:

Minimum Order Quantity: 1 PCS
Packaging Details: Standards Package
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Detailed Product Description
Item: SFP Transceiver Wavelenth: 1550nm / 1490 Nm
Distance: 80km Compatilbe Brand: Cisco, Juniper, HP, Huawei,3COM
Certification: FCC, CE, RoHS, ISO9001 Case Operating Temperature: 0°C To +70°C

Bi-Directional SFP+ Transceiver 1.25G Fiber Optic SFP+ 1550nm TX/1490nm RX BiDi 80KM Module



TRANSCOM’s TS-SF-BL45(54)12-80D Small Form Factor Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA), The transceiver consists of five sections: the LD driver, the limiting amplifier, the digital diagnostic monitor, the DFB laser and the PIN photo-detector. The module data link up to 80KM in 9/125um single mode fiber.

The optical output can be disabled by a TTL logic high-level input of Tx Disable, and the system also can disable the module via I2C. Tx Fault is provided to indicate that degradation of the laser. Loss of signal (LOS) output is provided to indicate the loss of an input optical signal of receiver or the link status with partner. The system can also get the LOS (or Link)/Disable/Fault information via I2C register access.


Ordering information

Product part Number

Data Rate







Temperature Range(Tcase)()
TS-SF-BL45(54)12-80D 1.25 Single mode fiber 1490/1550(1550/1490) 80 0~70 commercial
TS-SF-BL45(54)12-80DE 1.25 Single mode fiber 1490/1550(1550/1490) 80 -10~80 extended
TS-SF-BL45(54)12-80DA 1.25 Single mode fiber 1490/1550(1550/1490) 80 -40~85 industrial


Specification of Transmitter

Parameter Symbol Min. Typ. Max. Unit Note
Average Output Power POUT 0   5 dBm  
Extinction Ratio ER 9     dB  
Center Wavelength λC 1470 1490 1510 nm TS-SF-BL4512-80D
1530 1550 1570 TS-SF-BL5412-80D
Side Mode Suppression Ratio SMSR 30     dB DFB Laser
Spectrum Bandwidth(-20dB) σ     1 nm
Transmitter OFF Output Power POff     -45 dBm  
Differential Line Input Impedance RIN 90 100 110 Ohm  
Jitter P-P tJ     128 ps Note (1)
Output Eye Mask Compliant with IEEE802.3 z (class 1 laser safety)   Note (2)

Note (1): Measure at 2^7-1 NRZ PRBS pattern

Note (2): Transmitter eye mask definition


Specification of Receiver

Parameter Symbol Min. Typ. Max. Unit Note
Input Optical Wavelength λIN 1530 1550 1570 nm TS-SF-BL4512-80D
1470 1490 1510 TS-SF-BL5412-80D
Receiver Sensitivity PIN     -26 dBm Note (1)
Input Saturation Power (Overload) PSAT -3     dBm  
Los Of Signal Assert PA -38     dBm  
Los Of Signal De-assert PD     -26 dBm Note (2)
LOS Hysteresis PA-PD 0.5 2 6 dB  

Note (1): Measured with Light source 1550nm(1490nm), ER=9dB; BER =<10^-12 @PRBS=2^7-1 NRZ

Note (2): When LOS de-asserted, the RX data+/- output is High-level (fixed)


Electrical Interface Characteristics

Parameter Symbol Min. Typ. Max. Unit Note
Total Supply Current ICC     A mA Note (1)
Transmitter Disable Input-High VDISH 2   Vcc+0.3 V  
Transmitter Disable Input-Low VDISL 0   0.8 V  
Transmitter Fault Input-High VDISL 2   Vcc+0.3 V  
Transmitter Fault Input-Low VTxFH 0   0.8 V  
Total Supply Current ICC     B mA Note (1)
LOSS Output Voltage-High VLOSH 2   Vcc+0.3 V LVTTL
LOSS Output Voltage-Low VLOSL 0   0.8 V

Note (1): A (TX) + B (RX) = 280mA (Not include termination circuit)

Contact Details
Shenzhen Transcom Technology Limited

Contact Person: Nicole Chen

Tel: +8613662576983

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