Single Diode Configuration: The MA44781 is a silicon PIN diodes in surface mount packages. There are two sets of two PIN diode pairs constructed in opposing configurations. The package is sealed with a non-conductive epoxy resin and is suitable for surface mount applications. The MA44781 Device is well suited for MRI Passive switching applications. The PIN Diodes become high Q, R-C elements under small signal and behave as effective passive rectifiers or short circuits under high RF Signal to tune and de-tune the resonant MRI tank circuit. The anti-parallel doublet arrangement provides for more efficient RF power handling.