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14th August 2026
As electric and hybrid vehicle powertrains continue to evolve, DC-link capacitors have become one of the most critical components within inverter and controller electronics. The move towards high-voltage battery systems, SiC and IGBT power semiconductors and compact power conversion architectures is driving demand for highly customised DC-link capacitor solutions that are optimised for both electrical and mechanical performance.
DMTL can supply fully customised DC-link capacitors designed for EV, hybrid EV, electric aerospace, eVTOL, industrial traction and high-performance power electronics applications, with voltage ratings from 400VDC to 2300VDC, capacitance values from 50µF to 5600µF and full AEC-Q200 qualification.
Designed for high-performance power conversion
Unlike standard catalogue capacitors, custom DC-link capacitors are engineered around the customer’s mechanical layout, semiconductor package, thermal management requirements and electrical performance targets.
Typical applications include:
EV traction inverters
Hybrid vehicle controllers
eVTOL propulsion systems
Electric aircraft power conversion
Industrial motor drives
Battery energy storage systems
Mechanical customisation for direct integration
Custom DC-link capacitors can be supplied with bespoke housings, integrated busbar assemblies, custom input and output terminals and threaded inserts for direct mounting within the inverter or controller assembly.
Additional features such as sensor integration points and customer-specific mounting arrangements can also be incorporated, allowing the capacitor to become an integrated part of the power electronics system.
Optimised busbar design and ultra-low ESL
Integrated busbars can be designed to suit the exact current path requirements of the application, with insulated busbars available in a range of colours for phase identification and assembly simplification.
By optimising the capacitor geometry and busbar layout, single-digit nanohenry ESL values can be achieved, helping to reduce voltage overshoot, switching losses, EMI and stress on SiC and IGBT power semiconductors.
Full electrical modelling can be provided, including expected stray inductance and high-frequency performance analysis.
Thermal management integration
Custom designs can incorporate integrated heatplates, thermal interface materials, gap pads and dedicated cooling surfaces that allow direct thermal coupling into the customer’s cooling system.
Thermal performance can be fully modelled during the design phase, enabling optimisation of capacitor temperature rise, power dissipation and expected operating life under real application conditions.
Automotive and aerospace-grade reliability
With AEC-Q200 qualification, custom DC-link capacitors provide the reliability, low inductance and mechanical integration required for next-generation automotive and electric aerospace power electronics.
DMTL can support custom DC-link capacitor projects from concept through to production, providing electrical modelling, thermal analysis, mechanical integration support and fully customised capacitor solutions for demanding power conversion applications.
Contact our team today to discuss your requirements by clicking the link below, emailing info@dmtl.co.uk or by calling us on +44(0)1276 33391
For more information on Custom DC-Link Capacitors for EV, Hybrid and Electric Aerospace Power Electronics talk to DMTL Ltd