A implantable active medical device includes a chassis plate having a first major surface and an opposing second major surface, an elongate lead connector fixed to the first major surface and extending orthogonally away from the first major surface and a circuit board fixed to the first major surface and extending orthogonally away from the first major surface. A hermetic housing defines a sealed housing cavity. The hermetic housing is fixed to the first major surface. The elongate lead connector and the circuit board are disposed within the sealed housing cavity.