R46KI2220JH01M KEMET 0.022µF 275VAC X2 Safety Film Capacitor

ElecSuppliers Part Number GuideAug 22, 2026

R46KI2220JH01M is a KEMET R46 series safety film capacitor designed for AC line interference suppression and other applications requiring an X2-rated capacitor. It provides a capacitance of 0.022 µF, equivalent to 22 nF, with a capacitance tolerance of ±20%.

The capacitor uses metallized polypropylene film and a radial through-hole construction. Its 275 VAC rating and X2 safety classification make it suitable for connection across the line in appropriately designed mains-powered electronic equipment.

R46KI2220JH01M Key Specifications

R46KI2220JH01M has a nominal capacitance of 0.022 µF and a tolerance of ±20%. Its rated AC voltage is 275 VAC, while the DC voltage rating is 560 VDC.

The capacitor uses polypropylene as its dielectric material and has a metallized film construction. It has two straight radial leads with a lead spacing of 15 mm.

The component measures approximately 18 mm in length, 5 mm in width and 11 mm in height. Its specified operating temperature range is -40°C to +110°C.

0.022µF X2 Safety Capacitor

The 22 nF capacitance value makes R46KI2220JH01M useful for high-frequency interference suppression in AC-powered equipment.

The X2 classification is particularly important because X capacitors are designed for applications connected across the line where the capacitor is not directly relied upon as protection against electric shock.

In a typical AC input circuit, an X2 capacitor can be connected between line and neutral to provide a path for high-frequency interference while presenting a much higher impedance to the desired low-frequency power signal.

The safety classification should always be considered together with the actual circuit position. An X2 capacitor should not simply be substituted for a Y-class safety capacitor where the application requires a component with the appropriate Y classification.

KEMET R46 Series

R46KI2220JH01M belongs to the KEMET R46 series of metallized polypropylene film capacitors designed for EMI suppression and safety applications.

The R46 family includes different capacitance values, tolerances and lead configurations. This allows designers to select an appropriate capacitor according to the required noise-suppression characteristics and PCB layout.

The metallized polypropylene construction also provides self-healing characteristics. When a localized dielectric breakdown occurs, the energy can vaporize a small area of the metallized layer around the fault, isolating the damaged area and allowing the remaining capacitor structure to continue operating.

R46KI2220JH01M EMI Suppression

Electromagnetic interference can be generated by switching power supplies, motors, converters, digital circuits and other electronic equipment.

An AC line filter can use an X2 capacitor to reduce differential-mode high-frequency noise between line and neutral. The capacitor provides a low-impedance path for selected high-frequency components, helping prevent unwanted noise from propagating through the power input.

The actual filtering performance depends on the capacitor value, parasitic inductance, PCB layout and other components in the EMI filter.

For this reason, simply increasing capacitance does not necessarily produce better EMI performance. The capacitor should be selected based on the frequency characteristics of the noise and the applicable safety requirements.

R46KI2220JH01M Voltage Rating

The 275 VAC rating is an important specification for this capacitor.

Because R46KI2220JH01M is intended for AC line suppression, engineers need to consider both the nominal mains voltage and possible voltage transients. The X2 safety rating is designed for applications where the capacitor is connected across the AC line and may experience transient conditions.

The 560 VDC rating provides another electrical reference, but it should not be interpreted as meaning that the capacitor can be freely used in any 560 VDC application. The intended safety classification and operating conditions must be considered together.

R46KI2220JH01M Temperature Range

R46KI2220JH01M operates from -40°C to +110°C.

Temperature performance is important in power supplies and other mains-powered equipment because capacitors can be exposed to heat generated by switching devices, transformers, inductors and nearby components.

When the capacitor is installed close to a heat-generating component, designers should consider the actual local temperature rather than relying only on the ambient temperature specification.

Operating below the maximum temperature can also provide additional reliability margin for long-term applications.

Radial Through-Hole Package

R46KI2220JH01M uses a radial through-hole package with a 15 mm lead spacing.

The approximately 18 mm × 5 mm × 11 mm body provides a relatively compact form factor for a safety-rated film capacitor.

Through-hole construction is still widely used for AC input filters and power supply assemblies because it provides mechanical stability and is well suited to components connected directly to mains circuitry.

When designing the PCB, the 15 mm lead spacing should be taken into account together with the required creepage and clearance distances for the system's operating voltage and applicable safety standards.

R46KI2220JH01M Applications

R46KI2220JH01M can be used in AC power supplies, switching power supplies, industrial equipment, consumer electronics, lighting equipment and other mains-powered products.

Typical applications include across-the-line EMI suppression, AC input filtering and noise reduction.

It can be used alongside common mode chokes, inductors and other filtering components to create a more complete electromagnetic interference suppression network.

The actual filter configuration depends on the equipment's noise characteristics and regulatory requirements.

R46KI2220JH01M Replacement Considerations

When replacing R46KI2220JH01M, the most important parameters include capacitance, AC voltage rating, X2 safety classification, capacitance tolerance, temperature range, lead spacing and physical dimensions.

A conventional polypropylene capacitor with the same 22 nF capacitance should not automatically be considered an equivalent replacement. For an AC line application, the appropriate safety certification and X2 classification are essential.

The lead spacing also matters during PCB replacement. A capacitor with different lead spacing may require PCB modifications even if its electrical specifications appear similar.

R46KI2220JH01M for AC Line Filtering

R46KI2220JH01M combines 22 nF capacitance, 275 VAC X2 safety classification and metallized polypropylene film construction in a compact radial package.

Its primary role is EMI suppression across AC lines, making it relevant to power supplies and other mains-powered electronic equipment where conducted electromagnetic interference needs to be controlled.

For new designs, engineers should evaluate the capacitor together with the complete EMI filter, safety requirements, transient environment and PCB creepage and clearance. For replacement applications, matching the complete R46KI2220JH01M specification is more important than matching capacitance alone.