Keysight

4142 B

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Keysight4142 B

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What is it?

The Keysight / Agilent 4142B is a modular semiconductor parameter tester mainframe with eight slots for plug-in measurement units.

What do the numbers mean?

Power & electrical12

Integrated measurement functions: Current/voltage sources, nanovoltmeters, and picoammeters in one instrument^[1]
Source Monitor Unit (SMU) sensitivity: Forces voltage while measuring currents down to 20 fA; forces current while monitoring voltages down to 40 µV^[1]
HP 41420A High Power SMU: 2 slots; 40 µV to 200 V, 20 fA to 1 A (±200 V and ±1 A)^[1]
HP 41421B Medium Power SMU: 1 slot; 40 µV to 100 V, 20 fA to 100 mA (±100 V and ±100 mA)^[1]
HP 41422A High Current Unit (HCU): 2 slots; pulse mode only; 100 µs pulsed measurements up to ±10 V and 10 A^[1]
HP 41423A High Voltage Unit (HVU): 2 slots; DC or pulsed measurements to ±1000 V; low-leakage design measures currents down to 2 pA^[1]
HP 41425A Analog Feedback Unit (AFU): 1 slot; used with two SMUs for analog voltage/current searches; finds target values in 12 ms^[1]
Maximum configuration coverage: 2000 V max using two HVUs; 20 A (pulsed) using two HCUs^[1]
Maximum common-to-ground voltage: ±42 V^[1]
Ground Unit (GNDU): High-current SMU set to 0 V, used as measurement ground; Kelvin connection; maximum offset voltage ±500 µV; current range ±1.6 A^[1]
Power requirements: 100/120/220 V ±10%; 240 V -10%/+5%; maximum 750 VA (48-66 Hz)^[1]
Typical measurement time (SMU): HP 41420A/HP 41421B SMU (20 V/100 mA range, spot measurement): force I or V in 3.5 ms; measure I or V in 4.0 ms^[1]

Control & software1

Interfaces: HP-IB; external trigger input (TTL, negative logic, minimum pulse width 100 µs); external trigger output (TTL, negative logic)^[1]

Dimensions & facilities2

Dimensions: 426 mm W × 235 mm H × 676 mm D^[1]
Weight: Mainframe approx. 23 kg; plug-in units 2-3 kg each^[1]

Configuration & options9

Architecture: Mainframe with 8 slots for plug-in measurement units^[1]
Maximum output power: Sum of all measurement units' instantaneous output power cannot exceed 32 W^[1]
Program memory: Approx. 2000 program steps, groupable into 99 subroutines^[1]
Data memory: Maximum 4095 data values (binary) or 1023 data values (ASCII)^[1]
Measurement modes: Plug-in units operate individually or in synchronized modes to perform ten different types of measurements^[1]
Self-test and calibration: Self-test at power-up; offset errors in each measurement unit auto-calibrated every 30 minutes^[1]
Operating temperature: 5 °C to 40 °C^[1]
Operating humidity: 5% to 80% RH^[1]
Storage temperature and humidity: -40 °C to 65 °C; <90% RH at 65 °C^[1]

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Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.

Integrated measurement functionsCurrent/voltage sources, nanovoltmeters, and picoammeters in one instrument^[1]
Source Monitor Unit (SMU) sensitivityForces voltage while measuring currents down to 20 fA; forces current while monitoring voltages down to 40 µV^[1]
HP 41420A High Power SMU2 slots; 40 µV to 200 V, 20 fA to 1 A (±200 V and ±1 A)^[1]
HP 41421B Medium Power SMU1 slot; 40 µV to 100 V, 20 fA to 100 mA (±100 V and ±100 mA)^[1]
HP 41422A High Current Unit (HCU)2 slots; pulse mode only; 100 µs pulsed measurements up to ±10 V and 10 A^[1]
HP 41423A High Voltage Unit (HVU)2 slots; DC or pulsed measurements to ±1000 V; low-leakage design measures currents down to 2 pA^[1]
HP 41425A Analog Feedback Unit (AFU)1 slot; used with two SMUs for analog voltage/current searches; finds target values in 12 ms^[1]
Maximum configuration coverage2000 V max using two HVUs; 20 A (pulsed) using two HCUs^[1]
Maximum common-to-ground voltage±42 V^[1]
Ground Unit (GNDU)High-current SMU set to 0 V, used as measurement ground; Kelvin connection; maximum offset voltage ±500 µV; current range ±1.6 A^[1]
Power requirements100/120/220 V ±10%; 240 V -10%/+5%; maximum 750 VA (48-66 Hz)^[1]
Typical measurement time (SMU)HP 41420A/HP 41421B SMU (20 V/100 mA range, spot measurement): force I or V in 3.5 ms; measure I or V in 4.0 ms^[1]

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Not publicly documented

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Not publicly documented

The following facts about the 4142 B are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.

No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the 4142 B are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the 4142 B are on record.
Answerable by: an OEM product catalog or an engineer who ordered or specified the tool
The control-system platform and OS era of the 4142 B are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the 4142 B are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the 4142 B is not on record.
Answerable by: an OEM datasheet or a fab qualification report