Product Introduction

C4AQUBU4100A1WJ is an automotive-grade DC link film capacitor from KEMET C4AQ series. Yageo completed the acquisition of KEMET in 2020, and currently KEMET belongs to the power film capacitor product line under Yageo Group. As a world-leading capacitor manufacturer, KEMET has profound technical accumulation in automotive electronics and industrial power electronics. The C4AQ series is a high-performance DC link capacitor solution specially developed for new energy vehicles and industrial power supplies.

C4AQUBU4100A1WJ is a metallized polypropylene film DC link capacitor designed for automotive electronic and industrial power electronic systems. Its core functions include stabilizing DC bus voltage, suppressing ripple current, storing energy and buffering power fluctuation in inverters, DC-DC converters and motor drive circuits. It protects power semiconductor devices and improves system efficiency and reliability. Adopting rectangular plastic box package with resin filling, this capacitor features self-healing property and high ripple current handling capability. It is certified to AEC-Q200 automotive standards and suitable for harsh high-low temperature and vibration environments. Users can obtain samples and check real-time inventory of C4AQUBU4100A1WJ via SMCC, an authorized KEMET distributor, to ensure stable supply during R&D and mass production.

Core Technical Specifications

Application Fields

New Energy Vehicles (Core Application)

• Electric Vehicle (EV) Inverter: Stabilizes DC bus and suppresses IGBT high-frequency ripple.

• On-board DC-DC Converter: Smooths voltage fluctuation and reduces EMI.

• On-Board Charger (OBC): Balances input and output power to improve charging efficiency.

• EV Air Conditioner Compressor Controller: Filters DC bus for compressor drive circuits.

Industrial Automation

• Industrial Inverter: Suppresses harmonic and protects motor windings.

• Servo Drive: Handles high ripple current for servo motor control.

• PV Inverter: Stabilizes DC voltage for solar power generation systems.

• Energy Storage System (ESS) Converter: Buffers power fluctuation between grid and batteries.

High-End Power Equipment

• Medical Equipment Power Supply: Provides stable low-noise power for CT and MRI devices.

• 5G Base Station Power Supply: Resists voltage fluctuation for outdoor communication equipment.

Market Outlook

1. Rapid Growth of New Energy Vehicles: Over 30% annual sales growth boosts demand for DC link capacitors.

2. Industrial Automation Upgrade: Low ESR film capacitors gradually replace traditional electrolytic capacitors.

3. Renewable Energy Development: PV, wind power and energy storage markets expand continuously.

4. AEC-Q200 Certification Barrier: KEMET maintains leading advantages in automotive capacitor field.

Supply Chain Service

C4AQUBU4100A1WJ is a reliable DC link film capacitor for automotive and industrial power electronics. With AEC-Q200 certification and excellent performance, it is widely used in new energy vehicles, industrial automation and renewable energy. SMCC provides stable inventory, technical support and alternative recommendations to help customers accelerate project progress.

For more information, please visit the official KEMET website or contact SMCC about C4AQUBU4100A1WJ.