Vishay Intertechnology, Inc. recently announced the launch of MKP1848e, a metalized polypropylene film DC Link capacitor certified by AEC-Q200. This series of products has a working temperature of up to+125 ℃ and exhibits excellent stability in high humidity environments. These characteristics make it an ideal choice for harsh environmental applications such as automotive, energy, and industrial.
The newly released MKP1848e series is based on the Level III standard of IEC60384-16 3rd edition, and can operate continuously and stably for 1344 hours under rated voltage and 60 ° C/93% relative humidity conditions, providing unprecedented reliability guarantee for power conversion systems.
Technical challenges in harsh environments
Modern automotive electronics and industrial equipment have put forward unprecedented requirements for electronic components. The stability of high-temperature environments has become the primary challenge, as the internal temperature of engine compartments and power electronic devices often exceeds the tolerance limit of traditional components.
The high humidity tolerance directly affects the product life, especially in electric vehicle chassis and outdoor energy equipment, where humidity fluctuations can cause a sharp decline in the performance of traditional capacitors. The ripple current capability restricts the improvement of power density, and high-power applications require components to withstand greater current stress.
In addition, space constraints and thermal cycling stress are also major challenges faced by design engineers. Compact layout and rapid temperature changes pose a severe test on the mechanical and electrical performance of capacitors.
Vishay's Innovative Solutions
The MKP1848e series provides comprehensive solutions to industry challenges through material innovation and structural optimization. The advanced metalized polypropylene film technology ensures stability over a wide temperature range while providing excellent dielectric properties.
The optimized internal structure design increases the ripple current capability to 44.5A, which is 25% higher than the previous generation product and meets the requirements of high-power applications. The innovative moisture-proof packaging technology is based on the IEC60384-16 Grade III standard, ensuring long-term reliable operation in high humidity environments.
Enhanced termination technology provides excellent thermal shock resistance, supporting 1000 temperature cycles from -40 ℃ to+125 ℃, and adapting to the most demanding environmental stresses.
The core function of product
MKP1848e plays the role of energy buffering and filtering core in power systems, especially in high-power DC Link applications, where its performance directly affects the efficiency and reliability of the entire system.
As a DC bus capacitor, it smooths voltage ripple in inverters and converters, reducing the current stress on switching devices. The high ripple current capability ensures voltage stability during severe load changes and protects sensitive electronic components.
In the power system of electric vehicles, this capacitor stores and releases energy to support the instantaneous high-power demand of the motor driver, while filtering high-frequency noise and improving electromagnetic compatibility.
Key Product Competitiveness
● Leading temperature performance:+125 ℃ continuous working temperature, supporting higher power density design.
● Excellent environmental tolerance: certified by IEC60384-16 Grade III, stable at 93% humidity.
● Electrical performance improvement: 44.5A ripple current capability, which is 25% higher than the previous generation.
● Significant space optimization: volume reduction of 40% for 500VDC specifications and 15% for 900VDC specifications.
● Strong mechanical reliability: supports 1000 temperature cycles from -40 ℃ to+125 ℃, suitable for harsh environments.
● Wide voltage range: 500VDC to 1300VDC rated voltage, meeting diverse application needs.
Actual application scenarios
Electric vehicle power system: DC support in the on-board charger (OBC) and DC/DC converter, capable of withstanding high temperature and humidity environments in the engine compartment.
New energy infrastructure: DC Link application of solar inverters and battery energy storage systems to adapt to outdoor temperature fluctuations.
Industrial drive system: filtering and energy buffering in motor drives and UPS to ensure continuous operation reliability.
Fast charging equipment: DC charging pile power module, supporting high power density design.
Hydrogen energy system: The voltage in the electrolytic cell rectifier is smooth and resistant to corrosive environments.
Product supply situation
The MKP1848e series has currently provided samples and achieved mass production, with a standard supply cycle of 10 weeks. Vishay provides comprehensive technical support and customized services, and can provide specific terminal designs according to customer needs, helping customers accelerate their product development process.
The launch of the MKP1848e series marks a significant breakthrough in temperature tolerance and environmental adaptability of thin-film capacitor technology, providing a more reliable power solution for the next generation of automotive electronics and industrial equipment.
With the rapid development of electric vehicles and renewable energy, these highly reliable and long-life capacitors will become key components driving technological innovation and product upgrades, helping engineers break through traditional design limitations and create more application possibilities.
