GAOTek SFP GE-FX Transceiver SFPGF-102, 155Mb/s and up to 2km

This 155 Mbps SFP GE-FX transceiver is used with Multi-mode fiber to span up to 1.2 Miles (2 Km) transmission distance


Key Features

  • Up to 1.2 Miles(2 km) on 50/125μm MMF
  • Built-in PHY supporting SGMII Interface
  • 1310nm FP laser transmitter
  • Hot-Pluggable
  • 100BASE-FX operation
  • Duplex LC connector
  • RoHS compliant and Lead-Free
  • Single +3.3V Power Supply
  • Very low EMI and excellent ESD protection
  • Operating case temperature range from 32°F to 158°F (0°C to +70°C )



Technical Specifications

Standard ROHS
Working Range Up to  1.2 Miles (2Km)
Data rate 155 Mb/s
Wavelength 1310
Transmitter Extinction Ratio 8.2 dB
Transmitter Off Output Power -45dBm
Transmitter Differential Line Input Impedance 90-110 Ω
Receiver Sensitivity -30dBm
Receiver Input Saturation Power(Overload) -3 dBm
Supply Voltage -0.5 to 4V
Dimensions 2.53in*0.58in*0.33 in

(L  64.4mm*W 14.8mm*H 8.5mm)

Relative Humidity 5% to 95%
Storage Temperature -40°F to 185°F (-40°C to 85°C)
Case Operating Temperature 32°F to +158°F( 0°C to +70°C)



PIN Descriptions:


  1. Circuit ground is internally isolated from chassis ground.
  2. Laser output disabled on TDIS >2.0V or open, enabled on TDIS<0.8V
  3. Should be pulled up with 4.7k – 10kohms on host board to a voltage between 2.0V and 3.6V.MOD_DEF (0) pulls line low to indicate module is plugged in.
  4. This is an optional input used to control the receiver bandwidth for compatibility with multiple data rates (most likely Fiber Channel 1x and 2x Rates).If implemented, the input will be internally pulled down with > 30kΩ resistor. The input states are:
  • Low (0 – 0.8V): Reduced Bandwidth
  • (>0.8, < 2.0V): Undefined
  • High (2.0 – 3.465V): Full Bandwidth
  • Open: Reduced Bandwidth
  1. LOS is open collector output should be pulled up with 4.7k – 10kohms on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.

Electrical Interface Characteristics:

Note (1): A (TX) + B (RX) = 400mA (Not include termination circuit)

Ordering Information

GAO Product ID Data Rate(Mbps) Media Wavelength (nm) Transmission Distance PHY IC
GAO-SFPGF -102-A 125 Multi mode fiber 1310 1.2 Miles(2 Km) Marvell
GAO-SFPGF -102-B 125 Multi mode fiber 1310 1.2 Miles(2 Km) Broadcom

Regulatory Compliance

Mechanical Specifications


  • Switch to Switch interface
  • Switched backplane applications
  • Fast Ethernet
  • Other optical transmission systems



Content missing