Y-capacitor for line-to-ground EMI suppression in industrial equipment
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Tolerance | ±20% typical | |
| Safety Class | Y1, Y2, or Y4 per IEC 60384-14 | |
| Rated Voltage | 250VAC to 440VAC | |
| Leakage Current | <0.25mA typical at 250VAC | |
| Capacitance Range | 100pF to 10nF | |
| Temperature Range | -40°C to +110°C | |
| Dielectric Strength | ≥4kV AC for 60 seconds | |
| Insulation Resistance | ≥10,000 MΩ |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
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X capacitors are connected between line and neutral (line-to-line) and fail short, while Y capacitors are connected between line and ground (line-to-ground) and must fail open to prevent shock hazards. Y capacitors have stricter safety requirements.
Y capacitors provide essential high-frequency grounding paths for electromagnetic interference without allowing dangerous leakage currents. They help meet conducted emissions limits (typically 150kHz-30MHz) in international EMC standards.
Properly rated Y capacitors are designed to fail open-circuit (not short-circuit) to maintain isolation between line voltage and ground. This prevents electric shock hazards but may reduce EMI filtering effectiveness.
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