YAGEO SMP253 SMD Y2 Capacitors Target EMI Filtering in Power Electronics

YAGEO has introduced the SMP253 series, a Class Y2 surface-mount safety capacitor family for electromagnetic interference (EMI) suppression applications. The series is rated for 310 VAC operation and is intended for line-to-earth filtering in industrial and automotive power systems.

The SMP253 is a multilayer metallized paper capacitor available in capacitance values from 1 nF to 68 nF. The devices support operating temperatures from -40°C to +125°C and are specified for voltages up to 1500 VDC. The series is qualified to THB Grade IIB requirements and meets AEC-Q200 standards.

Metallized Paper Construction for Safety Applications

SMP253 capacitors use impregnated metallized paper technology with self-healing characteristics. The components are encapsulated in self-extinguishing material meeting UL 94 V-0 requirements and are classified as Y2 safety capacitors for line-to-earth use.

The series is specified for high dV/dt operation and is designed to withstand transient voltage events commonly found in power conversion equipment. Self-healing behavior allows localized dielectric faults to be isolated without causing catastrophic capacitor failure.

SMP253 is a Class Y2 safety capacitor used for EMI suppression between power lines and earth connections in power electronic systems.

Surface-Mount Format for Automated Assembly

Unlike many traditional safety capacitors that use through-hole construction, the SMP253 is offered in a surface-mount package. This allows integration into automated assembly processes while reducing board space requirements.

The combination of a surface-mount format and Y2 safety classification targets applications where EMI filtering must be incorporated into increasingly compact power electronics designs. The capacitors are intended for use in both industrial and automotive platforms.

Operating Conditions and Application Areas

The SMP253 series is specified for operation in environments with elevated temperature and humidity exposure. THB Grade IIB qualification addresses temperature-humidity-bias testing conditions often associated with long-term reliability evaluations.

Target applications include DC EMI filters, onboard chargers, auxiliary inverters such as e-compressor systems, switching power supplies, and electric water pumps. Automotive qualification also allows the same capacitor platform to be used across vehicle and industrial equipment designs.

The SMP253 joins YAGEO's EMI suppression capacitor portfolio as a surface-mount Y2 device for systems requiring line-to-earth filtering, high-temperature operation, and automated PCB assembly.

Learn more and read the original announcement at www.yageo.com

Technology Overview

Class Y safety capacitors are used between line conductors and earth connections to suppress conducted electromagnetic interference while meeting safety requirements for failure behavior. The SMP253 series is a surface-mount Y2 capacitor family rated for 310 VAC operation, capacitance values from 1 nF to 68 nF, temperatures up to +125°C, and voltages up to 1500 VDC.

Frequently Asked Questions

What type of capacitor is the SMP253?

The SMP253 is a Class Y2 surface-mount safety capacitor for line-to-earth EMI suppression applications.

What capacitance values are available in the SMP253 family?

The series is available in capacitance values from 1 nF to 68 nF.

Which applications are targeted by the SMP253?

Target applications include onboard chargers, auxiliary inverters, DC EMI filters, switching power supplies, and water pump systems.