The Investor
19 Feb 2026, 13:12
TDK Corporation has launched two new aluminum electrolytic capacitor series designed for DC link applications in on-board chargers (OBCs) for electric vehicles, targeting higher-voltage and higher-current next-generation platforms.
The newly introduced B43655 and B43656 series are optimized for forced cooling operation and compact installation, addressing efficiency and reliability requirements in space-constrained OBC designs. The B43655 series features voltage ratings of 475 V and 500 V, capacitance values from 110 µF to 880 µF, and supports 800 V battery architectures. It offers ripple current capability up to 3.29 A at +105°C and ESR values down to 100 mΩ, with a useful life exceeding 3,000 hours at +105°C.
The B43656 series, rated at 450 V, supports even higher ripple currents of up to 4.42 A at +105°C, making it suitable for demanding high-power OBC topologies.
Both series are AEC-Q200 Rev. E qualified, RoHS-compliant, and available in compact snap-in designs with diameters from 22 mm to 35 mm and lengths from 25 mm to 60 mm. The capacitors will also be integrated into TDK’s web-based AlCap Useful Life Calculation Tool, providing design engineers with enhanced lifecycle modeling support.
With these additions, TDK strengthens its portfolio of automotive-grade passive components aimed at supporting the shift toward 800 V e-mobility architectures and higher power density OBC systems.
The newly introduced B43655 and B43656 series are optimized for forced cooling operation and compact installation, addressing efficiency and reliability requirements in space-constrained OBC designs. The B43655 series features voltage ratings of 475 V and 500 V, capacitance values from 110 µF to 880 µF, and supports 800 V battery architectures. It offers ripple current capability up to 3.29 A at +105°C and ESR values down to 100 mΩ, with a useful life exceeding 3,000 hours at +105°C.
The B43656 series, rated at 450 V, supports even higher ripple currents of up to 4.42 A at +105°C, making it suitable for demanding high-power OBC topologies.
Both series are AEC-Q200 Rev. E qualified, RoHS-compliant, and available in compact snap-in designs with diameters from 22 mm to 35 mm and lengths from 25 mm to 60 mm. The capacitors will also be integrated into TDK’s web-based AlCap Useful Life Calculation Tool, providing design engineers with enhanced lifecycle modeling support.
With these additions, TDK strengthens its portfolio of automotive-grade passive components aimed at supporting the shift toward 800 V e-mobility architectures and higher power density OBC systems.