Film capacitors
September 9, 2025
TDK presents ultra-small PFC capacitors for space-constrained consumer applications
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TDK Corporation (TSE:6762) introduces the B3270xP, a series of ultra-small, metallized polypropylene (MKP) film capacitors tailored for power factor correction (PFC) stages in power supplies for consumer electronics. With their compact design and self-healing properties, these components are engineered for use in adapters and power supplies for devices such as laptops and gaming consoles. Their minimized footprint addresses the increasing demand for space-efficient solutions in high-density circuit designs.
The B3270xP series is available in three lead spacing variants – 10 mm (B32701P), 15 mm (B32702P), and 22.5 mm (B32703P) – with rated DC voltages of 450 V, capacitance values ranging from 0.47 µF to 2.2 µF, and an ESR of 10 mΩ to 25 mΩ at 100 kHz. These capacitors operate up to a +110°C case temperature (with voltage derating above +85°C), delivering consistent performance over a service life of 50,000 hours at rated voltage and +85 °C. In addition, they exhibit a dissipation factor tan δ of up to 1.0 ∙ 10⁻³ at 1 kHz. TDK provides LTspice models for these components.
Designed with parallel wire leads and halogen-free options upon request, the components meet RoHS compliance and are offered in bulk, ammo pack, or reel configurations. Their plastic housing and epoxy resin sealing meet UL 94 V-0 standards, ensuring flame retardance and mechanical durability.
Features & Applications
Main applications
Power supplies and adapters
SMPS PFC circuits
Low-power electronic device chargers
Main features and benefits
Very compact design for space-constrained consumer applications
High voltage capability up to 450 V (DC)
Self-healing properties for enhanced reliability
RoHS compliance
Halogen-free (upon request)
Key Data
| Ordering code | Capacitance [µF] | Lead spacing [mm] | Min. dimensions (L x W x H) [mm] | Weight [g] |
|---|---|---|---|---|
B32701P* | 0.47 … 2.2 | 10 | 13.0 x 5.0 x 11.0 | 13.0 x 9.5 x 19.5 |
B32702P* | 0.68 … 2.2 | 15 | 18.0 x 5.0 x 10.5 | 18.0 x 8.5 x 14.5 |
B32703P* | 2.2 | 22.5 | N.A. | 26.5 x 6.0 x 15.0 |
Further information on the products can be found at www.tdk-electronics.tdk.com/en/snubber_pfc
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About TDK Corporation
TDK Corporation (TSE:6762) is a global technology company and innovation leader in the electronics industry, based in Tokyo, Japan. With the tagline “In Everything, Better” TDK aims to realize a better future across all aspects of life, industry, and society. For over 90 years, TDK has shaped the world from within; from the pioneering ferrite cores to cassette tapes that defined an era, to powering the digital age with advanced components, sensors, and batteries, leading the way towards a more sustainable future. United by TDK Venture Spirit, a start-up mentality built on visions, courage and mutual trust, TDK’s passionate team members around the globe pursue better—for ourselves, customers, partners, and the world. Today, the state-of-the-art technologies of TDK are in everything, from industrial applications, energy systems, electric vehicles, to smartphones and gaming, at the core of modern life. TDK’s comprehensive, innovative-driven portfolio includes cutting-edge passive components, sensors and sensor systems, power supplies, lithium-ion and solid-state batteries, magnetic heads, AI and enterprise software solutions, and more—featuring numerous market-leading products. These are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics, TDK-Lambda, TDK SensEI, and ATL. Positioning the AI ecosystem as a key strategic area, TDK leverages its global network across the automotive, information and communication technology, and industrial equipment sectors to expand its business in a wide range of fields. In fiscal 2025, TDK posted total sales of USD 14.4 billion and employed about 105,000 people worldwide.