TDK Aluminum Electrolytic DC Link Capacitors

TDK Aluminum Electrolytic DC Link Capacitors are aluminum electrolytic capacitors designed for DC links in onboard chargers (OBC) in electric vehicles. The B43655 and B43656 series capacitors are optimized for forced cooling operation, supporting higher voltages and currents in next-generation OBC platforms. Features include a compact design and high ripple-current capability, making these capacitors suitable for applications that require maximum efficiency and reliability in space-constrained environments.

Specifications include 475V and 500V voltage ratings, a capacitance range of 110μF to 880μF, and a useful life of >3000h at +105°C. The B43655 capacitors meet the requirements of 800V battery architecture for modern e-mobility applications, while the B43656 series offers a high-current handling capability of 4.42A at +105°C for demanding high-power OBC topologies.

TDK DC Link Capacitors are AEC-Q200 qualified and made with RoHS-compliant materials. They are available in compact snap-in designs with diameters ranging from 22mm to 35mm and lengths from 25mm to 60mm, depending on the capacitance and voltage class.

AlCap Useful Life Calculation Tool

Features

Designed for onboard chargers in EVs
High CV
Ultra-compact design
High reliability

Design optimized for base cooling and high ripple current density
Available for tight length tolerance only for construction with pressure relief device on case wall