FNIRSI P4100 100MHz 100:1 High Voltage Oscilloscope Probe (4000V)

Working with high-voltage circuits demands a measurement tool that can safely step down signals while preserving waveform integrity. The FNIRSI P4100 passive oscilloscope probe offers a 100:1 attenuation ratio and a 100 MHz bandwidth, making it a dependable choice for engineers and technicians who need to view voltages up to 4000 V on a standard 1 MΩ oscilloscope input.

Who is it for

This probe is perfect for professionals and hobbyists involved in power electronics, including SMPS design, inverter troubleshooting, motor drive analysis, and high-voltage testing. It also suits educational labs where high-voltage experiments are performed.

Main features

• 100:1 attenuation for safe high-voltage measurement
• DC to 100 MHz bandwidth with a fast 3.5 ns rise time
• Handles up to 4000 V (DC + AC peak) input
• High 100 MΩ input resistance minimizes loading on the circuit
• Low 6 pF input capacitance for accurate high-frequency response
• Adjustable compensation range of 10 pF to 35 pF for matching various oscilloscopes
• Standard BNC connector for universal compatibility
• 1.2 m lightweight cable for flexible positioning
• ±2% attenuation accuracy

Specifications

• Probe Type: Passive high voltage
• Attenuation Ratio: 100:1
• Bandwidth: DC to 100 MHz
• Maximum Input Voltage: 4000 V (DC + AC peak)
• Input Resistance: 100 MΩ (with 1 MΩ oscilloscope input)
• Input Capacitance: 6 pF
• Rise Time: 3.5 ns
• Compensation Range: 10 pF - 35 pF
• Cable Length: 1.2 m
• Connector Type: BNC
• Attenuation Accuracy: ±2%
• Operating Temperature: 0°C to 50°C
• Operating Humidity: 0-80% RH (non-condensing)
• Ground Lead Length: 15 cm

Tips

Always attach the ground lead securely before energizing the circuit. Set your oscilloscope input to 1 MΩ, and perform a low-frequency compensation adjustment to match the probe to your scope. Inspect the probe and cable for damage before each use, especially when working above 1000 V.