To offer another option for engineers to meet the reliability and performance requirements of demanding automotive and industrial applications, Knowles is introducing a new capacitor series: Type PPH double metallized polypropylene film capacitors. Designed for applications operating under high voltages, frequencies, currents, and temperatures, these capacitors play a critical role in protecting and stabilizing modern electronic systems, especially for automotive and industrial power circuits.
Engineered for reliability, our Type PPH capacitors are constructed with double-sided metallized polypropylene film and encapsulated with epoxy resin in a plastic box with two tinned copper wire leads. This design enables PPH series capacitors to efficiently handle rapid voltage changes and high ripple currents, making them ideal for pulse applications where electrical stress is constant and intense
In power electronics, Type PPH capacitors are widely used in snubber and silicon-controlled rectifier (SCR and IGBT) and SiC (MOSFET) commutation circuits to manage voltage spikes and protect sensitive switching components. By absorbing and smoothing transient energy, these capacitors help extend the life of critical components and improve overall system reliability.
Our PPH series capacitors are particularly well-suited for:
These capacitors are built for environments where performance and durability are non-negotiable. Typical applications include:
With AEC-Q200 qualification, the PPH series meets stringent automotive standards for reliability, including performance under high temperature and humidity conditions (85°C / 85% RH for 2,000 hours). This makes these capacitors a strong fit for next-generation electrification and harsh-environment applications.
Our Type PPH series capacitors offer numerous key benefits, including:
Additionally, the PPH series supports capacitance values from approximately 0.001 µF to 4.7 µF and voltage ratings up to 2000 VDC, enabling flexibility across a wide range of designs.
As power electronics continue to evolve, especially for EVs, renewable energy, and high-efficiency industrial systems, the need for robust, high-performance capacitors is rapidly growing. Our Type PPH capacitors are designed to meet these needs by combining durability, efficiency, and reliability in a compact form factor. For engineers designing the next generation of power systems, the PPH series offers a compelling solution for managing high-stress pulse environments with confidence.
View the PPH series capacitor datasheet.