The analogy of electrons traveling through circuits being similar to a fluid flowing through a pipe has long been useful in explaining basic electronics to the uninitiated. In recent years, this analogy between microelectronics and the much newer field of microfluidics has expanded rapidly. Work in the Landers lab has focused on leveraging the knowledge base from microelectronics into a new paradigm for passively controlling fluid flow in microfluidics. Passive fluid controls in microfluidics, similar to passive components in electronics, do not require an external energy source, greatly increasing the simplicity and portability of microdevices. Using microfluidic components analogous to fundamental electric circuit components (resistors, capacitors, rectifiers), we are modeling and characterizing microfluidic circuits (filters, timers, etc…) created when the components are combined.