TDK Presents DC-link Capacitors Rated for Up to +135 °C
TDK Corporation has introduced the B3272*A/G/T series of DC-link film capacitors, designed to meet the rigorous demands of modern automotive and industrial power electronics. These components are engineered to provide enhanced thermal headroom and reliability in applications where increasing power density, confined spaces, and higher ambient temperatures subject passive components to growing thermal and electrical stress.
A key differentiator for the B3272*A/G/T series is its qualification for continuous operation at case temperatures of up to +135 °C, with no derating required up to +105 °C. This superior thermal performance is enabled by an EPN dielectric, a proprietary blend of polypropylene (PP) and cyclic olefin copolymer (COC) that has been proven in TDK’s high-performance power capacitors.
The series is also AEC-Q200E qualified and RoHS-compatible, ensuring suitability for global use in critical automotive and industrial converters. Furthermore, the capacitors offer flexible integration options, including 4-pin G-types for low-inductance busbar interfaces in fast-switching inverter stages, and low-profile T variants specifically designed for height-constrained layouts.
Source Link: Press Release
Specifications
| Product Series | Dielectric | Rated DC Voltage | Rated Capacitance | Max Operating Temp | Derating | Compliance | Lead Spacing Options | Case Type Options |
|---|---|---|---|---|---|---|---|---|
| B3272*A/G/T series | EPN (PP + COC) | 800 – 1200 V | 1.0 – 60 µF | +135 °C | No derating up to +105 °C | AEC-Q200E, RoHS, UL 94 V-0 | 27.5 mm, 37.5 mm, 52.5 mm (4-pin) | 2-pin, 4-pin, low-profile variant |
Key Features
- Maximum operating temperature of +135 °C
- No derating required up to +105 °C
- Utilizes EPN dielectric, a blend of polypropylene (PP) and cyclic olefin copolymer (COC)
- AEC-Q200E qualified for automotive applications
- RoHS-compatible for global use
- Flame-retardant plastic case and epoxy resin sealing comply with UL 94 V-0
- Rated DC voltages from 800 V to 1200 V
- Rated capacitance values from 1.0 µF to 60 µF
- Available with three lead spacings: 27.5 mm, 37.5 mm, and 52.5 mm (for 4-pin B32728G)
- Offers both 2-pin and 4-pin versions, including low-profile (T variant) options
- 4-pin G-types support low-inductance busbar interfaces
- Features good self-healing properties and overvoltage capability
- Exhibits low losses with high current capability
- Long useful life of 100,000 hours at VR and +85 °C
Applications
- xEV traction inverters
- On-board charging units
- Automotive DC-DC converters
- Industrial drives
- High-end power supplies
Availability
TDK Corporation’s B3272*A/G/T series of DC-link film capacitors is available for automotive and industrial power electronics applications, offering continuous operation at case temperatures of up to +135°C without derating up to +105°C. Featuring an advanced EPN dielectric, low power losses, high current capability, and AEC-Q200E qualification, the series is designed for applications such as electric vehicle traction inverters, onboard chargers, DC-DC converters, industrial drives, and high-performance power supplies
