The Aim-TTi SMU4201 Source Measure Unit is a high performance four quadrant unit engineered for precision sourcing and measurement across demanding electronic test environments. Delivering up to ±210V and 3A with a 25W power envelope, it provides 0.015% basic accuracy and resolutions as fine as 0.1µV and 100fA, making it suitable for characterising highly sensitive devices. Its PowerFlex technology ensures full output power is available across most of the voltage range, while fast measurement speeds down to 200µs (5k/s) support rapid test cycles. Sense terminals for 4 wire operation and guard capabilities further enhance accuracy for low level measurements. Designed with usability at its core, the SMU4201 features an intuitive front panel interface and graphical display that simplify configuration and data interpretation. Engineers benefit from advanced sweep capabilities, programmable compliance limits, variable slew rate control and extensive internal memory for storing up to 100k measurements and steps. Additional features such as advanced math functions, tolerance band result sorting, and multiple load modes (current, power and resistance) enable flexible test creation and automation. Remote interfacing via LAN, USB, LXI and optional GPIB allows seamless integration into automated test systems. The SMU4201 is ideal for laboratory, industrial and production applications, particularly where precise I V characterisation is essential. Typical uses include semiconductor device testing, sensor evaluation, insulation and leakage measurements, battery cycling and general component analysis. Its ability to source or sink power while measuring both voltage and current simultaneously makes it a versatile tool for research and development environments as well as automated test equipment setups. * 4-quadrant Source, Sink & Measure * 0.015% basic accuracy with 6½ digit resolution * Sense terminals for 4 wire operation and guard capabilities * PowerFlex technology: up to ±210V, up to ±3.15A, 25W power envelope * 0.1µV & 100fA resolution * Fast measurement speeds up to 200µs (5k/s) * Continuous or pulsed high speed outputs with Linear/Log or arbitrary list sweeps * Compact size * Internal memory, up to 100k measurements, up to 100k steps * ‘SMU Link' allows two SMUs to be linked together for synchronous operation (optional accessory) * Full control of multiple units with Test Bridge SMU Windows software (free download)