The SFP-S120 is a high performance and cost-effective module for serial optical data communication applications specified for single mode of 1.25 Gb/s. It operates on +3.3V power. The module is intended for single mode fiber, operates at a nominal wavelength of 1310nm, and complies with Multi-Source Agreement (MSA) Small Form Factor Pluggable (SFP). Each module consists of a transmitter optical sub-assembly, a receiver optical sub-assembly, and an electrical sub-assembly. All are housed in a metal package and the combination produces a reliable component.