| Part Number | 
Data Rate (Gbps)  | 
Reach (km)  | 
Wavelength (nm)  | 
Source | Case Temp. (°C)  | 
DDM | Others | 
| FX31TGL4 | 10 | 40 | 1310 | DFB + APD | 0 ~ 70 | Yes | SMF, RoHS-6 | 
| FX31TGL4E | 10 | 40 | 1310 | DFB + APD | -10 ~ 85 | Yes | SMF, RoHS-6 | 
| FX31TGL4I | 10 | 40 | 1310 | DFB + APD | -40 ~ 85 | Yes | SMF, RoHS-6 |