A fluid heater having a first heat exchanger block with a fluid heating tube encased therein, and having a first surface, a second heat exchanger block with a fluid heating tube encased therein and having a second surface adjacent to the first surface. The charge is formed within a mold of the component to form a multi-contoured laminate. A special power sequence is further employed to ensure the JFET could be turned off during the power supply coupled to the JFET starts up.