The Optical Probe Electric Current Sensor (OpECS) is a high-precision optical current sensor that makes it possible to measure electric currents without cutting or clipping the cable. By using the Faraday effect, the sensor detects the magnetic fields generated by current flow and converts them optically into electrical signals that can be evaluated with an oscilloscope or similar.
The OpECS is ideal for high-precision measurements in demanding and confined environments, especially in power electronics and in the development of modern semiconductor components. Typical areas of application are:
- Current measurement on wire bonding packages of power semiconductors
- Verification of current distribution in busbars
- Current measurement on high-density PCBs and in inner layers
- Measurement of switching processes in SiC-/GaN components
- Current measurement on air coils or free conductors
Thanks to the extremely small sensor tip (0,45 mm diameter), the OpECS can also be used in very confined areas, e.g. directly on bonding wires. e.g. directly on bonding wires or conductor tracks. Clamping or mechanical insertion into the cable is not necessary - the sensor detects the magnetic field change without contact. The optical signals received are converted into electrical signals in the control unit and can be precisely evaluated.
Product features:
- Measuring principle: Faraday effect (magneto-optical)
- Frequency bandwidth: DC to 150 MHz (-3 dB)
- Measurable current range: ±140 A
- Sensitivity: 25.78 mV/A (0.073 mV/A-m-¹)
- Output voltage range: ±4.7 V
- Noise level: 6.3 mV rms (at 200 MHz bandwidth, without input)
- Linearity: ±1 %
- Output connection: BNC (50 Ω termination)
- Power consumption: 11 W
- Operating temperature sensor: -10 to +50 °C
- Operating temperature control unit: 15 to 35 °C
- Power supply: AC 100-240 V (50/60 Hz)
- Sensor tip shape: φ0.45 mm × 1 mm (typical)
- Sensor weight: approx. 5 g
- Control unit dimensions (W×D×H): 158 × 254 × 108 mm (without protruding parts)
- Control unit weight: approx. 2 kg
