Mains Switch Suppression Capacitor

Mains switch suppression capacitor store energy and release it in a high-current pulse when needed. Most of the capacitors larger than 1 uf are electrolytic capacitors, which have a large inductance component, so the impedance will increase when the frequency is high. Film capacitors can also be used in a more conventional way as voltage smoothing capacitors. High-current electrical pulses are used to power pulsed lasers or generate lighting discharges. They can be used to store energy and release it in a high-current pulse when needed.

The bypass mains switch suppression capacitor is an energy storage device that provides energy to the local device, it can even out the output of the regulator and reduce the load demand. To minimize impedance, bypass capacitors should be placed as close as possible to the power supply and ground pins of the load device. The inductance and resistance (especially the inductance on the chip pins, which will cause rebound), this current is actually a kind of noise compared to the normal situation, which is the coupling effect.

Applications of mains switch suppression capacitor in conjunction with the mains must be carefully chosen due to the high energy availability and harsh environment of surge voltages and pulses.
There are two different types of connections, and as a result, two different types of applications.
One involves connecting the capacitor to the mains in series with additional circuitry, while the other involves connecting the capacitor to the mains in parallel with the mains without any additional impedance or circuit protection.
These mains switch suppression capacitor are designed to be utilized as across-the-line capacitors and are not permitted for applications in series with the mains functioning as voltage-dividing impedance due to their long-term capacitance stability and strong self-healing characteristics.

Feature of mains switch suppression capacitor

1.High stability of capacitance and DF versus wide temperature and frequency range
2.High transient endurance and high dielectric strength
3.Real long-term stability
4.Withstanding high voltage strength

Specifications of mains switch suppression capacitor:

Dielectric: Polypropylene film

Electrodes: Vacuum evaporated metal

Coating: Encapsulated in reinforced flame retardant plastic case sealed with epoxy resin meeting the requirement of UL94V-0.

Leads: Radial leads of tinned wire/ insulation flexible wire

Reference standard: IEC 60384-14 (3nd Edition,2005) UL1414,UL1283,GB/T 14472-1998,EN60384-14

Climatic catalogue: 40/100/21 (GMF)

Capacitance versus rated voltage:

0.001µF-4.7µF/275VAC (50/60Hz)

0.001µF-4.7µF/310VAC (50/60Hz), (UL)

Capacitance tolerance: M ±20% K ± 10% J ± 5%

Dissipation factor (tangent of loss): ≤0.1％ (at 20℃ , 1KHz)

Voltage-proof:

4.3*UR Unit VDC (1minute at 20℃ )

Insulation resistance:

C ≤0.33μF, IR ≥15,000mΩ, C>0.33μF, IR*C≥5000S (1 minute at 20 and RH≤65%)