Panasonic Industry Commercializes Conductive Polymer Tantalum Solid Capacitors (POSCAP) With to Support High-Output Power Delivery Required for USB Type-C Connections

Panasonic Industry Commercializes Conductive Polymer Tantalum Solid
Capacitors (POSCAP) With to Support High-Output Power Delivery Required for USB Type-C Connections

2025-9-18

image Panasonic Industry Commercializes Conductive Polymer Tantalum Solid<br>Capacitors (POSCAP) With to Support High-Output Power Delivery Required for USB Type-C Connections
  1. Features
    1. Achieves both an ultra-high withstand voltage and high capacitance to support high-output USB Type-C power delivery, in a 3 mm profile—the lowest in the industry
    2. Lineup of USB-PD 3.1-compliant models rated at 50 V and 63 V
    3. Contributes to reduced material usage lower environmental impact through low-profile design
  2. Application
  3. Relates articles
  4. Tags related to this article

These capacitors are ideal for voltage stabilization and noise reduction in power supplies compliant with USB Power Delivery (USB-PD)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.

1. Features

  • Achieves both an ultra-high withstand voltage and high capacitance*2 to support high-output USB Type-C power delivery, in a 3 mm profile—the lowest in the industry*1
  • Lineup of USB-PD 3.1-compliant models rated at 50 V and 63 V
  • Contributes to reduced material usage lower environmental impact through low-profile design
*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

1-1. Achieves both an ultra-high withstand voltage and high capacitance*2 to support high-output USB Type-C power delivery, in a 3 mm profile—the lowest in the industry*1

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.

Fig.　Cross-sectional view of POSCAP and enlarged view of the inside of the electrode body
Fig.　Cross-sectional view of POSCAP and enlarged view of the inside of the electrode body

1-2. Lineup of USB-PD 3.1-compliant models rated at 50 V and 63 V

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.

Rated voltage 35V rated
Parts no 35TQT56M
Capacitance[µF] 56
Rated ripple current[mArms] 1200
ESR[mΩ] 100
Size*4 L7.3 x W4.3 x H1.4
＋
50V rated*3 63V rated*3
50TQT33M 63TQT22M
33 22
1200 990
100 150
L7.3 x W4.3 x H2.8 L7.3 x W4.3 x H2.8
*3 Mass production of 50TQT33M and 63TQT22M will begin in December 2025, respectively.
*4 Product dimensional tolerance:Length (L): ±0.3 mm; Width (W): ±0.2 mm; Height (H): ±0.2 mm
Part List
»
Datasheet
»

1-3. Contributes to reduced material usage lower environmental impact through low-profile design

Compared to the industry standard size*5, the new models reduce volume by 25%, contributing to a lower environmental impact through reduced material usage.

*5 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

2. Application

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

3. Relates articles

4. Tags related to this article

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