Gdhy C35 Dc Snubber Circuit Capacitor Gto Snubber Capacitors High Voltage Film Capacitors

The dc snubber circuit capacitor acts like a low-pass filter in the circuit to absorb spikes. It is usually used in insulated gate bipolar transistors (IGBTs) to eliminate the peak voltage caused by the stray inductance of the busbar and avoid damage to the insulated gate bipolar transistors.

The structure of the absorption capacitor (GTO snubber capacitor is one of it) is characterized by double-sided metallized polypropylene film inner string structure, special internal design and end-face gold spray technology, so that the capacitor has low inductance, multiple lead designs such as tinned copper lugs, tinned copper wire leads,copper nut leads, can withstand higher ripple current, high DU/DV and High overpressure capability. Flame retardant plastic shell, epoxy resin encapsulation, in line with UL94V-0 standard. It is used for various IGBT buffer circuits surge absorption, various high frequency resonance circuits. It is also used in the output of Class-D audio amplifiers. A snubber network damps the ringing and overshoot due to fast switching of high currents. When the transistor you use to switch the current turns off, it generates a high-voltage spike that could damage the device.This spike will also generate electromagnetic interference (EMI). Be aware that EMI is caused by current in a loop. If your snubber network routes current in a large loop, it will increase rather than reduce EMI.

A DC snubber circuit capacitor is designed to increase the circuit's performance, but it also increases the IGBT's ability to exploit high-speed switching capabilities more efficiently, potentially allowing for even high-frequency control. A high-performing capacitor is ideal for use in a high-performance, high-power circuit as it must be able to cope with its challenging system effects as well. 

High voltage film capacitors IGBT snubber capacitors with self healing are used in high voltage, high current and high pulse applications such as IGBT protection circuits, GTO snubber, snubber network, protection circuits in SMPS, energy conversion and control in power electronics, UPS, inverter, induction heaters, welding machine for IGBT snubber protection.

Advantages:

● Round plastic pipe, PET tape wrapping, epoxy resin perfusion

● Tin plated copper nut or copper sheet leads

● High voltage, small dissipation factor (tgδ)

● Low ESL, low ESR，low temperature rise

● High pulse current, high dV/dt，high stability, self healing

Application: Damping of voltage spikes on GTO burst. High ripple current D.C. filtering.For high voltage pulse and high frequency application.