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| Part.Number | With&Without Leads | DC Sparkover Voltage（V） | 1KV/μs （V） | Insulation Resistance （GΩ） | Capacitance 1MHz（PF） | DC Holdover Voltage（V） | Impulse Life | 8/20μs (10 time) （KA） | AC Discharge Current（1s 10times） | Data sheet |
| Y08U-350A | No | 350±15% | ≤850 | ≥10000 | ≤1.0 | ≤150 | 500 | 5 | 10 |  |
| Y08U-350B | Yes | 350±15% | ≤850 | ≥10000 | ≤1.0 | ≤150 | 500 | 5 | 10 | |
| Y08U-400A | No | 400±15% | ≤850 | ≥10000 | ≤1.0 | ≤150 | 500 | 5 | 10 | |
| Y08U-400B | Yes | 4000±15% | ≤850 | ≥10000 | ≤1.0 | ≤150 | 500 | 5 | 10 | |
| Y08UZ-470A | No | 470±15% | ≤850 | ≥10000 | ≤1.0 | ≤150 | 500 | 5 | 10 | |
| Y08UZ-470B | Yes | 470±15% | ≤850 | ≥10000 | ≤1.0 | ≤150 | 500 | 5 | 10 | |
| Y08UZ-600A | No | 600±15% | ≤1000 | ≥10000 | ≤1.0 | ≤150 | 500 | 5 | 10 | |
| Y08UZ-600B | Yes | 600±15% | ≤1000 | ≥10000 | ≤1.0 | ≤150 | 500 | 5 | 10 | |
| Y08UZ-800A | No | 800±15% | ≤1200 | ≥10000 | ≤1.0 | ≤150 | 500 | 5 | 10 | |
| Y08UZ-800B | Yes | 800±15% | ≤1200 | ≥10000 | ≤1.0 | ≤150 | 500 | 5 | 10 | |
