MicroAmp MB Circuit Boards Twin Industries MicroAmp MB Series Circuit Boards are designed for rapid prototyping of many different low and high-frequency circuit functions. MicroAmp MB Series Circuit Boards are available for many popular MMIC amplifiers , filters, frequency dividers, multipliers, VCOs, passive circuits, and op-amps. These easy-to-assemble boards use standard surface-mount components and can be turned into functional circuits in a matter of minutes. All MicroAmp MB Series Circuit Boards fit into the MicroAmp MH series of connectorized housings that allows them to be used as a single (MH-1) or dual-cascaded circuits (MH-2). All Twin MicroAmp MB Series Circuit Boards are fabricated from a high-performance 13 mil thick RO-4350 laminate with RoHS compatible ENIG plating (electroless nickel/immersion gold) on both the component side and the solid bottom ground plane. Superior grounding to the housings is provided by securing the boards with multiple screws.