A snubber capacitor is an electrical component used in snubber circuits to suppress voltage spikes and reduce electromagnetic interference in power electronics.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| ESR | Low, typically < 0.1 Ω | |
| Tolerance | ±5% to ±20% | |
| Capacitance | 0.1 nF to 10 μF | |
| Voltage Rating | 100 V to 2000 V | |
| Dielectric Type | Film or Ceramic | |
| Temperature Range | -55°C to +125°C |
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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The primary function is to absorb and dampen voltage transients in switching circuits, protecting semiconductor devices from overvoltage and reducing electromagnetic interference.
Select based on capacitance value, voltage rating, dielectric material, and ESR to match the circuit's switching frequency and voltage requirements, often calculated using formulas involving parasitic inductance and desired dv/dt.
Yes, film and ceramic snubber capacitors are suitable for high-frequency applications due to their low ESR and stable performance, but careful design is needed to avoid resonance issues.
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