When 3750V Meets Compact Design
In the world of electric vehicle charging stations, engineers at a German automotive supplier faced a critical challenge: Their DC-link circuits kept failing during peak 800V fast-charging operations. The culprit? Conventional capacitors couldn’t handle the combined stress of high ripple currents (up to 25ARMS) and operating temperatures exceeding 85°C.
The solution emerged with EPCOS B25666W7167A375 multilayer ceramic capacitors. With its unique X8R dielectric formulation, this 3750V-rated component demonstrated:
- 15% lower equivalent series resistance compared to competitors
- Capacitance stability within ±15% from -55°C to +150°C
- 2.5x longer operational life in humidity tests (85°C/85% RH)
Real-World Impact in Wind Turbines
Spanish renewable energy company GreenVolt reported a 40% reduction in capacitor replacements after adopting B25666W7167A375 in their 2MW wind turbine converters. The capacitors’ self-healing properties and 1000+ hour lifespan under continuous 20kHz switching conditions proved crucial in harsh coastal environments.
“These capacitors helped us achieve 99.98% uptime – a game changer for offshore installations”
– Miguel Torres, Lead Power Engineer
Medical Imaging Breakthrough
In X-ray generator modules, the capacitor’s low dissipation factor (DF ≤ 0.25% @ 1kHz) enabled sharper medical images. A Tokyo-based OEM achieved 15% higher resolution in portable CT scanners by reducing parasitic losses in their high-voltage networks.
With over 2 million units shipped since 2020, B25666W7167A375 continues to power innovation across industries while maintaining <0.1% field failure rates - a testament to EPCOS' precision engineering.
