Series 6400 Picoammeters

The Keithley Series 6400 offers precise, cost-effective picoammeters for measuring ultra-low currents. The Model 6485 measures from 10fA to 20mA with up to 1000 readings per second. The 6487 provides faster rise times, higher accuracy, a 500V source, and damping for capacitive devices. The 6482 features dual channels, higher resolution, and independent 30V bias sources, catering to advanced testing needs. These instruments are ideal for research and development applications requiring reliable and accurate current measurements.

The cost-effective 5½-digit Model 6485 Picoammeter can measure currents from 10fA to 20mA, at speeds up to 1000 readings per second. The Model 6487 Picoammeter/Voltage provides higher accuracy and faster rise times than the 6485, a 500V source, and a damping function for use with capacitive devices. The Model 6482 Dual-Channel Picoammeter/Voltage Source offers higher measurement resolution than the Model 6485 or Model 6487 and dual, independent 30V voltage bias sources.

Fast, cost-effective low current measurement solutions

Ultra-Low Current Resolution (1 fA, Model 6482): Offers measurement sensitivity down to 1 femtoampere for detecting extremely small currents.

Low Burden Voltage (from 200μV): Applies minimal voltage drop during current measurements to minimize the impact on the circuit under test.

Dual-Channel Measurements (Model 6482): Provides two independent input channels for simultaneous current measurement.

Built-in Voltage Sources: Includes 0, 1, or 2 integrated voltage sources; Model 6487 features a 500V source for biasing.

Analog Outputs: Delivers real-time measurement signals to external devices via dedicated output ports.

High Current Capability (up to 20 mA): Measures currents of up to 20 milliamperes, suitable for a wide range of applications.

Fast Measurement Speed (up to 1,000 readings/sec): Capable of capturing data at rates up to 1000 samples per second for rapid testing.

Model	Current Range	Channels	PC Interface	Resistance Range	Voltage Source
6485/J	2nA - 20mA	1	GPIB, RS-232	-	-
6485	2nA - 20mA	1	GPIB, RS-232	-	-
6487/J	2nA - 20mA	1	GPIB, RS-232	10Ω - 10¹⁵Ω	0 – ±500V
6487	2nA - 20mA	1	GPIB, RS-232	10Ω - 10¹⁵Ω	0 – ±500V
6482/J	2nA - 20mA	2	GPIB, RS-232	-	0 – ±30V (each channel)
6482	2nA - 20mA	2	GPIB, RS-232	-	0 – ±30V (each channel)

Leakage Current Testing: Ideal for measuring extremely low leakage currents in electronic components and insulation materials.

Photodetector and Photodiode Testing: Measures dark currents and low-level currents in optical sensors and devices.

Semiconductor Device Characterization: Used for precise current measurements during semiconductor testing and analysis.

Microscopy Instrumentation: Monitors ultra-low beam currents in electron microscopy and similar applications.

Sensor and Transducer Calibration: Measures low-level currents in sensor loops, including 4-20mA industrial sensor testing.

Series 6400 Picoammeters

Key Features

Specifications

Applications