Keithley 4170 Input Head

Description

Keithley 4170 Input Head. Excellent condition. Used for single mode system monitoring by a well-known engineering/technical institution. carefully removed in operational condition. Purchaser will be responsible for any calibration, certification, maintenance or repair.

The Keithley 4170 Input Head is a specialized accessory designed to extend the precision and sensitivity of Keithley’s ultra-low current measurement instruments, such as picoammeters and electrometers. This input head is engineered to minimize leakage currents, stray capacitance, and external noise, ensuring highly accurate low-level electrical measurements.

Its primary function is to provide a low-noise connection between the device under test (DUT) and the measurement instrument, ensuring that the signal integrity is maintained, especially in sensitive applications such as semiconductor testing, material research, and nanotechnology.

Compatibility

The Keithley 4170 Input Head is compatible with various Keithley high-impedance measurement instruments, including:

• Keithley 4140B Picoammeter/Electrometer
• Keithley 617 Electrometer
• Keithley 6512 Electrometer
• Other Keithley low-current measurement instruments designed for high-accuracy applications.

Applications

The 4170 Input Head is widely used in industries and research fields that require precise low-current and high-impedance measurements, including:

1. Semiconductor Characterization
   • Measuring ultra-low leakage currents in transistors and diodes.
   • Gate leakage current testing in MOSFETs.
2. Nanotechnology & Materials Science
   • Conductivity studies on advanced materials.
   • Dielectric and resistivity testing of insulating materials.
3. Photodetector & Sensor Testing
   • Low-light photodiode sensitivity testing.
   • Infrared sensor characterization.
4. Electronics & Circuit Design
   • Measuring leakage currents in high-impedance circuits.
   • Testing capacitor insulation resistance.
5. Biomedical Research
   • Studying electrical properties of biological materials.
   • Electrochemical and ion-channel current measurements.

Specifications

• Input Resistance: Extremely high (>10¹⁴ Ω), ensuring minimal loading effect.
• Input Capacitance: Low capacitance to reduce signal distortion.
• Leakage Current: Ultra-low, typically in the femtoampere (fA) range, making it suitable for sensitive measurements.
• Shielding: High-quality shielding to minimize electromagnetic interference (EMI).
• Connector Type: Specialized low-noise connectors for secure and stable connections.
• Operating Temperature: Typically designed for laboratory environments (e.g., 15°C – 30°C).

Key Features & Benefits

✔ Ultra-Low Noise Performance – Ensures highly accurate low-current measurements without interference.
✔ Minimized Leakage Currents – Critical for applications measuring femtoampere and nanoampere-level currents.
✔ Optimized Shielding – Reduces external noise and prevents signal degradation.
✔ High-Quality Build – Designed for durability and long-term precision measurement.
✔ Versatile Compatibility – Works seamlessly with a range of Keithley picoammeters and electrometers.