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New ZKU series of Hybrid Capacitors features the largest capacitance in the industry

Panasonic Industry ZKU series

Panasonic Industry Europe launches the new highly reliable and miniature ZKU series of Conductive Polymer Hybrid Electrolytic Capacitors. Panasonic’s ZKU series marks the largest capacitance* range in the industry, ramping up from the current popular ZK series’ offer by 20%. The high capacitance characteristics in the miniaturized body can reduce the number of required capacitors on the PCB.

The ZKU series can withstand high current application conditions in automotive and industrial areas. Applications of this series include DC-DC converters, BMS, power supplies, motor control, robotics and the like. The adoption of ZKU series in EPS application decreases the PCB area by 25% when compared to other capacitors on the market.

Currently available with a rated voltage of 25VDC and 35VDC, the polarized ZKU series can be supplied in a vibration-proof format, that is able to withstand shocks of up to 30G. Standard products can only withstand up to 10G. The operating temperature range is -55°C to +125°C.

Specifications ZKU series

ZKU Series


Temperature range

-55 ~ 125℃

Rated voltage range

25 ~ 35V

Capacitance range

39 ~ 560uF


Φ5×5.8L ~ Φ10×10.2L


125℃ 4000h


85℃ 85% 2000h


Comparison ZKU to ZC series


ZKU series (new product)

ZC series (conventional product)

Temperature range

-55 ~ 125℃

-55 ~ 125℃

Rated voltage / Rated Capacitance

25V 560uF

25V 330uF

Case size (ΦD×L㎜)



Rated Ripple Current (125ºC,100㎑)



ESR (20ºC,100㎑)



It is predicted that by 2025, 25% of newly registered cars will have an electrified powertrain. Approximately, 50% of those will feature 48V technology. More ECUs are being employed in cars due to safety regulations. Therefore the market needs more compact ECUs that can also withstand vibration.

The green energy movement is accelerating as we address climate change concerns. This places great demand on the performance of components selected.

The move towards smart factories is increasing the number of electronic systems that are used within the manufacturing environment. Devices must be small, reliable and capable of working in harsh environments.

Panasonic’s range of Hybrid capacitors – specifically the market-leading ZKU series devices are engineered to meet these challenges.

*As conductive polymer hybrid aluminium electrolytic capacitors as of July 2019, according to research by Panasonic.

For further reference please compare RS

Please also see Panasonic Industry

Panasonic Industry Europe GmbH is part of the global Panasonic Group and provides industrial products and services in Europe. As a partner for the industry sector, Panasonic Industry researches, develops, manufactures and supplies technologies that contribute to a better life and a better world. Looking back on over 100 years of engineering knowhow in electronics, Panasonic Industry is the right supplier when it comes to engineering expertise combined with solution competence.

19 Nov 2019, 15:28