An example continuous glucose monitor includes a printed circuit board (“PCB”) having first and second outer layers and an inner layer； a semiconductor package having a plurality of pins coupled to the first outer layer of the PCB； an electrical contact formed on the second outer layer of the PCB； a trace having a first portion disposed on the first outer layer, a second portion disposed on the inner layer, and a third portion disposed on the second outer layer, the trace having a first end coupled to a first pin of the plurality of pins and a second end coupled to the electrical contact； and an encapsulant disposed around a perimeter of the semiconductor package, the encapsulant covering the plurality of pins, the first portion of the sensor trace, the third portion of the sensor trace, wherein an upper surface of the semiconductor package remains exposed.
