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What HVC products are used in IGBT snubber circuits?
HVC provides a complete IGBT snubber solution set addressing the most common failure mode in high-power inverter systems — IGBT overvoltage destruction during turn-off switching transients:
| Snubber Element | Recommended HVC Product | Function |
|---------------|------------------------|----------|
| Snubber Capacitor | HVCT8G-LF or HVCD-RF (low ESL) | Absorb dV/dt spike energy during IGBT turn-off |
|---|---|---|
| Discharge Resistor | HVR-BSP (bleeder type) | Controlled discharge of snubber C between switching cycles |
| Clamp Diode | HVD-Fast Recovery (trr < 80ns) | Provide alternative current path for inductive kickback |
The combination of low ESR capacitor + non-inductive resistor + fast diode creates an effective RCD snubber network that can extend IGBT module lifetime by 3-5x compared to un-snubbed designs. HVC engineering can assist with snubber component value calculations based on your IGBT specifications, bus voltage, and switching frequency.
Reference blog article: [HV Resistors for Snubber Circuits: Why Your IGBT Keeps Failing](https://www.hv-caps.com/Quality/capacitor_blog/49538.html)
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