The film type are made of self healing metalized polyester polypropylene or paper and usually come in a box style casing as the capacitor is encased is a flame retardant or flame proof case.
Ceramic safety capacitors.
Rfi safety rated x y ceramic capacitors manufactured by vishay a global leader for semiconductors and passive electronic components.
Rfi is simply higher frequency emi figure 1.
A ceramic capacitor is a fixed value capacitor where the ceramic material acts as the dielectric it is constructed of two or more alternating layers of ceramic and a metal layer acting as the electrodes the composition of the ceramic material defines the electrical behavior and therefore applications.
For x type capacitors there are sub classes x1 x2 and x3.
Safety capacitors are grouped into a number of different sub classes.
Safety capacitors are high voltage circuit specific capacitors commonly rated at 250 vac.
Emi stands for electromagnetic interference and rfi stands for radio frequency interference.
For x type capacitors kemet offers sub class x1 devices.
Capacitor array c0g dielectric 10 200 vdc capacitor array x7r dielectric 10 200 vdc telecom tip and ring x7r dielectric 250 vdc konnekt u2j for high efficiency high density power applications x7r with konnekt technology 25 1 500 vdc 250 vac non safety rated ac capacitors can series.
This product is designed to handle high voltage impulses and transients as well as protect users from harm due to electrical shock.
X1 y2 safety recognized ceramic disc capacitors are specifically made for high voltage ac alternating current applications.
These line rated ac rated.
Safety certified capacitors syfer technology s safety certified capacitors comply with international ul and tüv specifications to offer designers the option of using a surface mount ceramic multilayer capacitor to replace leaded film types.
Application voltages range from 400 to 760 vac nominal.
Safety capacitors are available in ceramic disc and metalized film or paper.
Image from this teardown.
These safety capacitors are also known by other names including emi rfi suppression capacitors and ac line filter safety capacitors.
Offering the benefits of simple pick and place assembly reduced board space required and lower.
Capacitors and schematics for antique tube radios.
An example of a class y capacitor.
X1y2 safety capacitors are versatile and can safely be used as both line bypass line to ground and accross the line capacitors.