Most mainstream ESCs used in FPV racing quads are equipped with 3.3x3.3mm MOSFETs which are typically lower in efficiency and reliability. With the same overall dimensions, Spedix has carefully designed IS series of high performance ESCs that are furnished with 6 standard sized MOS-FETs in a larger 5x6mm size to meet the increasing demands in electric current of new motors used in FPV racing. The standard sized MOSFETs are manufactured with more matured technologies, larger heat dissipating areas, and lower resistance. Spedix ESCs made of these parts are improved in heat dissipation and are therefore more reliable than ESCs with smaller MOSFETs. Other factors such as better design, fast EFM8BB21 MCU, independent half bridge drive chip, and 3 Oz copper PCB with high TG, all make IS ESCs one of the best in the market.