TAIYO YUDEN CO., LTD. has commercialized the new “HVX (-J)” and “HTX (-J)” series of conductive polymer hybrid aluminum electrolytic capacitors by revamping its “HVX” and “HTX” series, which comply with the AEC-Q200 Stress Test Qualification for Passive Components.
The capacitors are used for noise suppression and power smoothing in power supply circuits for control functions such as automotive power steering or safety functions such as ADAS.
While rated ripple currents of hybrid capacitors continue to increase in response to increasing currents required for power sources due to the advancement of ADAS, there is a demand for a wide range of sizes and lower profiles to enable greater design flexibility.
Thus, we have commercialized 36 types of hybrid aluminum capacitors, including the “RAHTX331M1TFH0002JX” (3,400 mArms), which offers a 70% increase in the rated ripple current over the earlier model “RAHTX331M1TFH0002X” (rated ripple current: 2,000 mArms@135°C), with a lineup of five sizes ranging from φ8×10 mm to φ12.5×13.5 mm.
In September 2025, we began mass production of the capacitors at the Shirakawa Plant and Aomori Plant Japan of our subsidiary ELNA CO., LTD. Samples are available for 150 yen per unit.
Technology Background
In hybrid capacitors, a conductive polymer and an electrolyte solution are used as the electrolyte. This composition takes advantage of the low ESR characteristic of conductive polymers with the self-repairing property of anodic oxide film, which is a characteristic of aluminum electrolytic capacitors, achieving both high performance and reliability.
In recent years, automobiles have become increasingly electrified, with a higher number of power circuits for ADAS, electric controls, and electric motors on EVs, and hybrid capacitors are installed for noise suppression in the power circuits and power smoothing. And, while power circuits are becoming increasingly powerful, requiring hybrid capacitors to have higher rated ripple currents, as the performance of ADAS and other devices improves, a wide range of sizes is required for hybrid capacitors to integrate the increasing number of power circuits used and improve design flexibility.
To meet this requirement, TAIYO YUDEN has commercialized the “HVX (-J)” and “HTX (-J)” series, which offer an expanded low-profile, large-profile package of φ12.5×13.5 mm through optimization of the conductive polymer impregnation technology used in hybrid capacitors to significantly improve the rated ripple currents compared to our earlier “HVX” and “HTX” series.
TAIYO YUDEN is dedicated to developing products that align with market demands and will continue to expand its hybrid capacitor lineup.
■ Application
These capacitors are utilized for noise suppression and power smoothing in power circuits for control functions like automotive power steering and safety functions such as ADAS.