The SFP-WB20 is a high performance and cost-effective module for serial optical data communication applications specified for single mode of multi-rate from 125M to 1.25 Gb/s. It operates on +3.3V power. The module is intended for single mode fiber, operates at a nominal wavelength of Tx: 1550nm / Rx: 1310nm, and complies with the Multi-Source Agreement (MSA) Small Form Factor Pluggable (SFP). Each module consists of a bi-directional optical subassembly that combines a transmitter with a receiver and an electrical subassembly. All are housed in a metal package and the combination produces a reliable component.