Keysight N9100A (4080 Series) Parametric Test System

The N9100A is a model designation within Keysight’s 4080 Series parametric test systems. As a semiconductor parametric test system, it is designed for the electrical characterization of devices at both the wafer and package levels. Unlike the Chroma 3380/3680 (used for high-volume functional testing) or Advantest memory testers (used for functional/burn-in testing), the 4080 Series focuses on measuring the "fundamental electrical parameters" of transistors and manufacturing processes, rather than determining whether a chip is functionally operational.

Core Positioning: The 4080 Series is an industry-standard, comprehensive parametric test system used to measure DC and capacitance parameters—such as Vth (threshold voltage), Ids (drain current), Idoff (off-state leakage current), and Cox (oxide capacitance). In short, it helps process engineers verify that transistors are fabricated correctly and reliably, rather than checking whether the chip itself functions as intended.

Key Specifications: It supports up to 48 measurement pins, with a minimum current measurement resolution of 1 fA (femtoampere—requiring an HRSMU, or High-Resolution Source/Measure Unit, module) and a minimum voltage measurement resolution of 2 µV. It offers a choice of three types of SMU (Source/Measure Unit) modules, covering a range from standard low-current to ultra-low-current measurements.

Series and Upgrades: The series includes the 4082A (for general-purpose parametric testing) and the 4082F (for flash memory cell characterization, equipped with a high-voltage pulse generator). For users still operating the discontinued 4070 Series, Keysight provides an N9100AU upgrade path, allowing for the reuse of existing SMU resources and the migration of SPECS test programs, thereby reducing transition costs.

In summary, the N9100A/4080 Series serves as Keysight’s primary parametric test platform for semiconductor front-end process monitoring and device modeling.