Description :
The structure of the IGBT snubber protection capacitor 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 circuit surge absorption, various high frequency resonance circuits and induction heaters. 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 snubber 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.
IGBT snubber film 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 machines for IGBT snubber protection.
Advantages :
● Plastic shell, flame-retardant epoxy encapsulation
● Tinned copper sheet extraction
● Resistance to high voltage, low dissipation factor
● Low ESL, low ESR, low temperature rise
● High pulse current, high dv/dt affordability
Application :
IGBT buffer absorption circuit protection, IGBT buffer absorpation device. Widely used in power electronic equipment UPS, inverter, induction heating, electric welding machine and other equipment peak voltage, peak current absorption protection.