Quantity   Component name
1 × OPA197IDBVR Operational amplifier for driving the gate of the main FET.
1 × OPA365AIDBVR Amplifier and Linear ICs / Operational Amplifiers, used for the differential voltmeter.
1 × INA225AIDGKR Programmable gain current shunt monitor used for the ammeter.
1 × ADS1115IDGSR Data Converters / Analog to Digital Converter ICs (ADCs). This digitizes voltage, current and temperature of the main FET.
1 × AD5693RBRMZ DAC. Used for setting constant voltage and constant current.
1 × MAX4619EUE+ Switches and Multiplexers / Analog Switches and Multiplexers. This routes analog signals to select constant voltage or constant current mode. It also switches feedback compensation so the load is very stable in both modes.
1 × TS5A3166DCKR Switches and Multiplexers / Analog Switches and Multiplexers. Used to create two ranges for the voltmeter.
1 × TLV2313IDGKR Operational amplifier to make a small bias voltage so the rail-to-rail amps operate in their linear range. This greatly improves linearity near zero voltage and current. Also used as a current source for temperature measuring thermistor.
1 × LM2766M6 Power Management ICs / Switching Regulators and Controllers. Doubles the 5V power rail from Arduino so the main FET can fully open.
1 × WSL3637 Resistors (Fixed) / Current Sense. Four-terminal sensing resistor for accurate current sensing.
1 × IXTH64N10L2; IXTH75N10L2 Discrete Semiconductors / Power Transistors and MOSFETs. FET for linear applications – the heart of MightyWatt R3.
1 × NCP15XH103F03RC Thermal Management and Protection / Thermistors. This watches the FET and protects it from overheating.
1 × Sunon ME50100V1-A99 Fan pumping 22 cubic metres of air per hour. This is what keeps MightyWatt R3 cool.
1 × Fischer ICKPGA20X20 Heatsink. An essential part of every electronic load.