| Model | Name | Display | Max Collector Current | Max Diode Reverse Voltage | Max Collector Sweep Voltage | Step Voltage |
| WQ4833 | High-Power Digital Storage Curve Tracer | Digital | 50A | 5000V | 500V | 2V/step |
| WQ4834 | High-Power Digital Storage Curve Tracer | Digital | 100A | 5000V | 500V | 2V/step |
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Features:
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