When Temperatures Rise, This Capacitor Keeps Its Cool
In the heart of an electric vehicle’s battery management system (BMS), where temperatures regularly hit 125°C+ and voltage spikes threaten component longevity, engineers at a leading European automaker faced repeated capacitor failures. Their solution came in a tiny 10x10mm package – KEMET’s PEH200YC3220MU2 polymer capacitor.
Built Tough for Harsh Environments
With its hybrid aluminum-polymer construction, this component withstands temperatures from -55°C to +200°C, far exceeding standard capacitors’ 105°C limit. Field data from 50,000+ deployed EVs shows:
- 0.02% failure rate after 5,000 operational hours
- Only 8% capacitance loss at 150°C after 10,000 cycles
- 35% smaller footprint than previous solutions
Real-World Impact: Case Study
Chinese EV maker NIO reduced BMS shutdowns by 72% after switching to PEH200YC3220MU2 in their 2023 models. ‘The low ESR (5mΩ typical) solved our voltage ripple issues,’ said Lead Engineer Zhang Wei. ‘We gained 15km extra range through improved energy efficiency.’
Beyond Automotive: Industrial Innovation
Solar inverter manufacturer SMA reports 91% reliability improvement in desert installations using these capacitors. The moisture-resistant THB-tested design (1000hrs at 85°C/85%RH) proves crucial in harsh environments.
As edge computing pushes thermal limits, KEMET’s innovation demonstrates how component-level breakthroughs enable system-level revolutions. The PEH200YC3220MU2 isn’t just a capacitor – it’s an enabler of tomorrow’s electrified world.
