Capacitors for DC Link

Up to +135 °C • Automotive grade

THB-robust • High current capability

UL 810-qualified versions

TDK provides a wide range of voltage and capacitance options to meet the customer requirements for DC link designs. These capacitors are available in 2-, 4- and multi-pin versions and come in rectangular and cylindrical shapes.

Focusing on high energy density, ripple current, ambient temperature, and humidity, TDK’s DC link film capacitors cover applications ranging from industrial variable-speed drives to solar, automotive, and consumer applications. In addition to their compact size and low ESR, their low self-inductance provides an excellent design option for fast switching applications using the latest wide bandgap (WBG) switching devices in SiC and GaN technology.

Latest developments

B3271 Series
TDK introduces new film capacitors for DC link applications: The B3271 series features high energy and power density. These are rated for DC voltages from 500 V to 1600 V, offer capacitance values from 0.47 µF to 170 µF, and can operate up to +105 °C. At rated voltage and an operating temperature of +70 °C, the typical life of the rugged, and self-healing capacitors is 95,000 hours.

xEVCap
TDK presents a standardized and modular DC link capacitor design - xEVCap- for powertrain inverters in passenger cars, commercial and off-highway vehicles, and machinery tools. This approach helps inverter designers meet varying capacitance and current requirements for lower volume applications while saving valuable development time thanks to the modularity and scalability of the xEVCap solution.

Features & benefits

Scalable and modular for different power levels and densities
Compatible with wide bandgap power semiconductor (SiC, GaN)
Good self-healing properties
Low ESR and low ESL
Compliant to IEC TS 6337:2024
Compliant to AEC-Q200 Rev E (lead wire versions)

Applications
DC link for main traction inverters in passenger cars, commercial and off-highway vehicles and machinery tools.

Explore more about xEVCap

Features & benefits

Features

Most comprehensive range of superior capacitors
Up to 1600 V (DC)
Up to 480 µF in one unit
Automotive-grade versions (AEC-Q200)
Highlights:
- Compact sizes
- High RMS/high pulse current capability
- Robust High Temperature, Humidity and Bias (THB) options

*Please note that these features may vary by product series

Customer benefits

Savings

Less PCB space thanks to higher packing densities
Fewer components thanks to high current/high pulse capability series
Long service life thanks to robustness against THB

Electrical

Long service life based on advanced polypropylene film technology
Self-healing
Capacitance stability over voltage variation

Mechanical

2- and 4-pin versions available

Environment

Pb-free, RoHS compatible

Get data sheets and search

Rated voltage (V DC)	Capacitance (µF)	Temperature, max. (°C)	Design	Type	THB compliance	AEC–Q200
300 - 875	0.47 - 270	+105	Radial, boxed	B3267*D/G/J/T	+40 °C / 93% RH / VR DC / 1000 h	Yes
450 - 1600	0.33 - 120	+105	Radial, boxed	B3277*M	+85 °C / 85% RH / VR DC / 1000 h	Yes
450 - 1600	0.33 - 120	+105	Radial, boxed	B3277*H	+60 °C / 95% RH / VR DC / 1000 h	Yes
450 - 1300	1.5 - 75	+105	Radial, boxed	B3277*D/E/G/J/T	+40 °C / 93% RH / 0 V / 1344 h	---
450 - 1300	6.5 - 260	+105	Parallel wire leads	B32320I	+40 °C / 93% RH / 0 V / 1344 h	---
500 - 1200	0.68 - 170	+105	Radial, boxed	B3277*X/Y/Z	+40 °C / 93% RH / 0 V / 1344 h	---
500 - 1600	0.47 - 170	+105	Radial, boxed	B3271*H	+60 °C / 95% RH / VR DC / 1000 h	Yes
500 - 920	60 - 270	+105	Lead wire terminal	B25654A*001	+40 °C / 93% RH / VR DC / 1000 h	Yes
500 - 920	60 - 270	+105	Flat terminal	B25654A*002	+40 °C / 93% RH / VR DC / 1000 h	Yes
630 - 840	1 - 50	+125	Radial, boxed	B3277*P	+85 °C / 85% RH / VR DC / 1000 h	Yes

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Number of Products 2060 Help

Parameters

Search Criteria

Capacitance (µF)

Capacitance tolerance (%)

Equivalent series inductance (nH)

Equivalent series resistance (mOhm)

Rated voltage (V DC)

Design

Height (max.) (mm)

AEC–Q200

THB compliance

Temperature, max. (°C)

Type

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Applications

Product resources

Design tools

Capacitor Life And Rating Application (CLARA)

CLARA is an intuitive search-oriented simulation tool for TDK and EPCOS film capacitors. It helps designers to find the most suitable product for their application conditions in just a few clicks. Within the design tool specifications of different products and the performance of the products under customer-specific application conditions can be simulated easily.

Model Libraries for Film Capacitors

High-Performance IGBT Modules

IGBT manufacturer Semikron uses TDK DC-link and snubber capacitors on his latest development, the SkiiP^®4 high-performance module, which switch currents in the kA range. At this performance level unwanted and in some cases harmful voltage overshoots can occur due to DC link leakage inductances.