Panasonic Industry Commercializes Conductive Polymer Tantalum Solid Capacitors (POSCAP) with The Industry's Lowest Profile*¹ to Support High-Output Power Delivery Required for USB Type-C Connections

Tokyo, Japan – Panasonic Industry Co., Ltd., a Panasonic Group company, announced today that it will begin commercial production of its two models of Conductive Polymer Tantalum Solid Capacitors (POSCAP), 50TQT33M and 63TQT22M. These capacitors are incorporated into power circuits used for information and communication equipment, including laptops and tablets. They offer an ultra-high withstand voltage and high capacitance in a body with the industry’s lowest profile of 3 mm, supporting high-output power delivery through USB Type-C connectors. Mass production for these models is planned to start in December 2025.

These capacitors are ideal for voltage stabilization and noise reduction in power supplies compliant with USB Power Delivery (USB-PD)^[1] 3.1. While previous USB-C connectors supplied up to 100 W (20 V/5 A), USB-PD 3.1 expands this to 240 W (48 V/5 A). This enables widespread use of USB-C connectors for high-speed data transfer and rapid charging, and is expected to further expand applications to larger equipment requiring high power output, such as displays.

On the other hand, information and communication equipment such as laptops are increasingly required to be thinner and more compact. Capacitors therefore must combine an ultra-high withstand voltage, high capacitance, and a low profile in order to fit into limited space. Panasonic Industry began mass production of Conductive Polymer Tantalum Solid Capacitors (POSCAP) in 1997 and, as an industry leader, has continuously delivered first-of-their-kind products. Leveraging proprietary powder molding technology and film formation technologies, the company has newly developed two models that achieve both an ultra-high withstand voltage and high capacitance in a package with the industry's lowest profile of 3 mm.

Through these unique device technologies, Panasonic Industry will continue to contribute to enhancing the functionality of electronic equipment, including laptops, while also reducing the environmental impact through smaller, lighter devices and lower material usage.

*1 As of September 18, 2025, Conductive polymer tantalum solid capacitors with rated voltages of 50 V and 63 V and capacitance of 22 μF or higher (Panasonic Industry data)
*2 USB-Power Delivery 3.1 (180 W/240 W output) compliant high-capacitance conductive polymer tantalum solid capacitors with rated voltages of 50 V and 63 V, and a capacitance of 22 μF or higher

To achieve capacitor performance required for USB-PD 3.1 power supplies in a low-profile body, both high capacitance and a high withstand voltage must be ensured, despite their trade-off relationship. High-capacitance tantalum powder is necessary for electrode materials, but its fine particle size makes molding difficult, creating challenges for stable production. Forming a uniform dielectric film on the surface of the electrodes is important for enhancing the withstand voltage. However, since electrodes made with high-capacitance tantalum powder contain extremely small internal pores, dielectric oxide films tend to develop imperfections.

Panasonic Industry overcame these challenges by establishing proprietary technology to mold high-capacitance tantalum powder with uniform density, and by optimizing the film deposition process to create flawless dielectric films. This enabled the development of two new models that combine an ultra-high withstand voltage and high capacitance, meeting the USB-C high-output power delivery requirements in a 3 mm low-profile package.

Until now, Panasonic Industry’s POSCAP lineup extended only up to 35 V, with no models compatible with USB-PD 3.1, which extends the rated voltage specification to 36 V (180 W) and 48 V (240 W). The two new models, rated at 50 V and 63 V, each achieve a high capacitance of 22 μF or higher in a package with the industry's lowest profile of 3 mm. The full lineup provides flexibility to meet diverse applications and equipment specifications.

Compared to the industry standard size*³, the new models reduce volume by 25%, contributing to a lower environmental impact through reduced material usage.

*3 Comparison with the industry standard size (7.3 mm × 4.3 mm × 4 mm) of conductive polymer tantalum solid capacitors used in USB-PD 3.1 compliant power supplies

• Voltage stabilization and noise reduction of USB-PD 3.1-compliant power supplies for laptops, displays, and peripheral equipment
• Arc discharge^[2] countermeasures for USB-PD 3.1-compliant connectors

• Life: 2,000 hours at 105°C; guaranteed operating temperature range: -55°C to 105°C
• Ripple current^[3]: 100 kHz, 105°C
• ESR^[4]: 100 kHz, 20°C

*4 Product dimensional tolerance:
Length (L): ±0.3 mm; Width (W): ±0.2 mm; Height (H): ±0.2 mm

Term descriptions:

[1] USB-PD
The power delivery standards established by the standard-setting organization USB Implementers Forum, Inc. (USB-IF). With the launch of USB-PD 3.1 in 2021, USB Type-C cables and connectors can now deliver up to 240 W of power, supporting a wide range of applications—from smartphones and laptops to larger equipment such as monitors.

[2] Arc discharge
An electric spark or discharge phenomenon that occurs when a high current flows at low voltage in electrical circuits.

[3] Ripple current
When a voltage fluctuation is applied to a capacitor, a corresponding charging or discharging current flows through the capacitor. The current applied to this capacitor is referred to as a ripple current. The higher the ripple current, the higher the allowable current.

[4] ESR (Equivalent Series Resistance)
Represents the value of an internal resistance component that can cause heat generation. Capacitors with lower ESR allow higher ripple currents and provide excellent noise absorption.

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