Panasonic Commercializes New ZKU Series Conductive Polymer Hybrid Aluminum Electrolytic Capacitors with the Industry's Largest Capacitance

Panasonic will launch mass production of large-capacitance conductive polymer hybrid aluminum electrolytic capacitors in August 2019. The increased capacitance will enable reduction in the number of capacitors necessary and compact size, contributing to the downsizing of automotive ECUs.

Osaka, Japan - Panasonic Corporation announced today that its Industrial Solutions Company has commercialized the new ZKU series of large-capacitance conductive polymer hybrid aluminum electrolytic capacitors for use in automotive ECUs (electronic control units), etc. and will launch mass production in August 2019. With increased capacitance, the largest product of this series with ϕ10 x 10.2 mm and smallest product with ϕ5 x 5.8 mm will respectively achieve reduction in the number of necessary capacitors and downsizing from the conventional standard products (ZC series), contributing to the downsizing of automotive ECUs.

Conductive polymer hybrid aluminum electrolytic capacitors feature low resistance and high reliability through the fusion of conductive polymer and electrolyte and are used in a wide range of applications, from control circuits in automotive engine ECUs, BMSs (battery management systems) to motor drive circuits in electric pumps, radiator fans, and further to ADAS applications (such as cameras, sensors, and control circuits). The progress in the electrification of automobiles has led to redundant design aiming to improve the safety and reliability. As a result, more and more ECUs are used in a single car, due to the mounting of two identical ECUs, for example. Design for downsizing boards is necessary for securing mounting space, which requires reductions in the number and size of capacitors and large current.

To respond to these requirements, Panasonic has commercialized the ZKU series of conductive polymer hybrid aluminum electrolytic capacitors with the industry's largest capacitance* by using its electrode foil large-capacitance technology.

Panasonic's new conductive polymer hybrid aluminum electrolytic capacitors (ZKU Series) have the following features:

  1. These capacitors with the industry's largest capacitance* enable reductions in the number and size of capacitors necessary, contributing to board area reduction.

    The capacitors have achieved large capacitance, i.e., 50% or more larger than the company's existing ZC series capacitors and 20% or more larger than the ZK series products.

  2. These capacitors maintain the large current and high reliability of the conventional products, contributing to board area reduction.

    The capacitors have achieved large currents, i.e., 1.3 times as much as those of the conventional ZC series products and equivalent to those of the ZK series.

*As conductive polymer hybrid aluminum electrolytic capacitors as of July 16, 2019 (according to research by Panasonic)

Product Features

  1. These capacitors, with the industry's largest capacitance*, enable reductions in the number of required capacitors and their size, contributing to a reduction in board area.

    Increasing the capacity of electrode foil by using an electrode foil area expansion processing technology has allowed the capacitors to achieve large capacitance, i.e., larger than those of the conventional ZC series products by 50% or more and ZK series by 20% or more. This enables a reduction in the number of required capacitors, from the use of several capacitors in parallel, as well as reduction in the size of capacitors with the same rating, thereby contributing to board downsizing.

  2. These capacitors maintain the large current and high reliability of the conventional products, contributing to a reduction in board area.

    The capacitors have adopted the large current and high reliability design of conventional conductive polymer hybrid aluminum electrolytic capacitors (ZK series) corresponding to the large current, achieving large currents 1.3 times as much as those of conventional ZC series products and equivalent to those of the ZK series. This enables a reduction in the number of required capacitors, from the use of several capacitors in parallel, as well as a reduction in the size of capacitors with the same rating, thereby contributing to board downsizing.

Suitable applications:

Voltage stabilization at ECU power supply input sections (input filter), current stabilization in motor drive circuits (DC-Link), etc.

Characteristic table:

Series: ZKU

Rated voltage (V): 25

  • Size (mm): ϕ5.0 x 5.8
    Capacitance (μF): 56
    Rated ripple current (mAr.m.s): 850

  • Size (mm): ϕ6.3 x 5.8
    Capacitance (μF): 100
    Rated ripple current (mAr.m.s): 1,300

  • Size (mm): ϕ6.3 x 7.7
    Capacitance (μF): 180
    Rated ripple current (mAr.m.s): 1,800

  • Size (mm): ϕ8.0 x 10.2
    Capacitance (μF): 330
    Rated ripple current (mAr.m.s): 2,000

  • Size (mm): ϕ10.0 x 10.2
    Capacitance (μF): 560
    Rated ripple current (mAr.m.s): 2,800

Rated voltage (V): 35

  • Size (mm): ϕ5.0 x 5.8
    Capacitance (μF): 39
    Rated ripple current (mAr.m.s): 750

  • Size (mm): ϕ6.3 x 5.8
    Capacitance (μF): 68
    Rated ripple current (mAr.m.s): 1,200

  • Size (mm): ϕ6.3 x 7.7
    Capacitance (μF): 120
    Rated ripple current (mAr.m.s): 1,700

  • Size (mm): ϕ8.9 x 10.2
    Capacitance (μF): 220
    Rated ripple current (mAr.m.s): 2,000

  • Size (mm): ϕ10.0 x 10.2
    Capacitance (μF): 390
    Rated ripple current (mAr.m.s): 2,800

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