Conductive Polymer Hybrid Aluminum Electrolytic Capacitor HXK series Developed - Achieves up to 1.2x capacitance and 1.5x the ripple current compared to products of equivalent size

Oct. 27, 2023

Press Release

Nippon Chemi-Con Corporation
October 10, 2023

Nippon Chemi-Con is pleased to announce that we have developed the HXK series. The HXK series offers higher capacitance and a higher ripple current compared to the HXJ series of conductive polymer hybrid aluminum electrolytic capacitors.
This series maintains the high reliability of the existing product (HXJ series: guaranteed for 4,000 hours at 125°C; high humidity performance: guaranteed for 2,000 hours at 85°C, 85%RH) while achieving nearly 1.2x higher capacitance and up to 1.5x the ripple current in a product of the equivalent size.

Contributing to vehicle ECU development

From the control of a vehicle’s basic functions, “go, turn, stop”, to assisting safe and pleasant driving, vehicle ECU are indispensable. With the integration of various functions moving forward, there is demand for size reductions, high integration, and compatibility with high power applications. This trend is particularly strong for the ECU used in the increasingly complex control and configuration systems of EVs and HVs. This is also leading to a need for equivalent performance improvements in the capacitors mounted in ECU. The HXK series fulfills such demands by helping maximize the performance of ECU.
In addition to offering the largest capacitance in the industry, this series also achieve a high ripple current. Compared to existing products (HXC series), this product maintains capacitance and ripple current performance while offering significant reductions in product size (see figure below). This series will contribute to increased vehicle performance by enabling low-profile, space-saving ECU unit designs featuring thinner boards with a reduced mounting area and fewer parts.

<Example of mounting area reduction, lower profile, and parts reduction>
Example of mounting area reduction, lower profile
parts reduction

Technical Features
Using an electrolyte in conductive polymer hybrid aluminum electrolytic capacitors comprised of a conductive polymer and an electrolyte liquid achieves low ESR properties and superior heat resistance thanks to the conductive polymer. At the same time, the electrolyte liquid adds oxide layer repairability. Through this combination, we have achieved high voltage products that offer low ESR and high reliability.
With the HXK series, the anode foil is comprised of a high capacitance foil we developed in-house to optimize the opposite electrode foil. At the same time, using a conductive polymer material offering good compatibility with both foils enables a design that maintains high reliability while achieving high capacitance and a high ripple current.
Product Specifications
  • Category temperature range: -55°C to +125°C
  • Rated voltage range: 16 WV, 25 WV, 35WV
  • Capacitance range: 82µF to 1,000µF (capacitance tolerance ±20%)
  • Case sizes: ⌀6.3mm×5.8mmL to ⌀10.0mm×10.0mmL
  • Endurance: 4,000 hours at 125°C
  • Moisture resistance: 2,000 hours at 85°C85%RH
Samples and Mass Production
  • Samples: January 2024
  • Mass production: April 2024
Production Sites
Chemi-Con East Japan Corp. Miyagi Plant
List of Standard Products
⌀D×L [mm]
Rated voltage
Rated ripple current
6.3×5.8 16 150 180 4,000 45 45 1,080 1,500
25 100 120 50 50 1,300 1,400
35 68 82 60 55 1,200 1,400
8.0×10.0 16 470 560 4,000 20 20 2,000 3,000
25 330 390 22 22 2,000 2,900
35 220 270 22 22 2,000 2,900
10.0×10.0 16 820 1,000 4,000 18 18 2,800 3,400
25 560 680 20 20 2,800 3,300
35 390 470 20 20 2,800 3,300
Product Appearance