TDK Electronics · TDK Europe

EMI Suppression Capacitors

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Superior EMI series • Most comprehensive range • 
Robust Temperature Humidity Bias (THB) • Automotive-grade available

EMI suppression capacitors are used in a wide variety of applications, such as the suppression of high-frequency emissions and preventing electrical shock to humans and animals. The special features of these IEC 60384-14-certified components are self-extinction in case of fire (UL 94 V-0) and their overvoltage protection. These products are available for both X and Y categories and their subclasses in various voltage, temperature, and humidity protection ratings. They cover applications from consumer electronics to industrial devices and automotive applications with a dedicated series approved according to AEC-Q200.


Features & benefits

Features

  • Comprehensive range of superior capacitors
  • International approved series carrying UL, ENEC, CQC 
  • Up to 30 µF in one unit
  • Highlights:
    • Compact sizes
    • Automotive grade (AEC-Q200) available 
    • Robust High Temperature, Humidity and Bias (THB) options

*Please note that these features may vary by product series

Customer benefits

Savings

  • Smaller PCB area thanks to higher packing densities
  • Reduced component count with high current/high pulse capability series
  • Long service life thanks to robustness against THB

Electrical

  • Long life expectancy based on advanced polypropylene film technology
  • Self-healing
  • Capacitance stability over voltage variation
  • Compliant series to latest IEC 60384-14 2023 revision

Mechanical

  • Flame retardant cases and filling materials

Environment

  • Pb-free, RoHS compatible

Latest Developments

B3201*A5/B5/C5 series

 1 Compact Y1 Safety PM 21.10.26 Pic

TDK Corporation has introduced the compact B3201*A5/B5/C5 series of Y1 safety capacitors designed to suppress EMI in demanding automotive and industrial applications. The metallized polypropylene (MKP) film capacitors are rated for AC voltages of 500 V and DC voltages of up to 1500 V. Featuring a maximum operating temperature of up to +125 °C (with derating), they combine a space-saving footprint with AEC-Q200 Rev. E compliance and high robustness under severe ambient conditions.

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B3292xU/V series

 2 Extends X2 Portfolio PM 25.20.26 Pic

TDK Corporation extends its X2 safety film capacitor portfolio with the new B3292xU/V series, now supporting higher voltages and offering compact lead spacings of 15 mm and 22.5 mm, with capacitance values from 47 nF to 1.8 µF. Rated at 350 V (AC) and robust against peak voltage pulses up to 2.5 kV (IEC 60384-14), the series is designed for interference suppression in demanding, space-constrained industrial and automotive environments in series with the mains.

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B3291xH/J4 series

 3 Small X1 Capacitors PM 18.02.25 Pic

TDK Corporation announces the X1 capacitors of the EPCOS B3291xH/J4 series for power line filtering of electromagnetic interferences (EMI) in demanding automotive and industrial applications with a rated AC voltage of up to 480 V. Applications that are exposed to harsh climatic conditions such as PV inverters and EV onboard chargers (OBCs) can benefit from the new X1 capacitors’ high resistance to high humidity environments. With the ability to continuously handle a DC voltage of 1000 V, this series is a dedicated solution for DC EMC of high-voltage EV platforms.

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B3292xM3/N3 series

 4 Compact X2 EMI PM 11.02.25 Pic

TDK Corporation announces the X1 capacitors of the EPCOS B3291xH/J4 series for power line filtering of electromagnetic interferences (EMI) in demanding automotive and industrial applications with a rated AC voltage of up to 480 V. Applications that are exposed to harsh climatic conditions such as PV inverters and EV onboard chargers (OBCs) can benefit from the new X1 capacitors’ high resistance to high humidity environments. With the ability to continuously handle a DC voltage of 1000 V, this series is a dedicated solution for DC EMC of high-voltage EV platforms.

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B3202*H/J series

TDK Corporation presents a new series of EPCOS MKP-Y2 capacitors for interference suppression. In contrast to conventional models designed for a maximum operating temperature of 110 °C, the new capacitors offer a maximum permissible operating temperature of 125 °C. The B3202*H/J series’ capacitance ranges from 1 nF to 1 µF with a maximum rated voltage of 300 V AC. 

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Get data sheets and search

PDF Suppression class RMS voltage (V AC) Temperature, max. (°C) THB compliance AEC–Q200 Type Capacitance (µF)
X1 480 +110 +85 °C / 85% RH / 380 V AC / 1000 h yes B3291*H4/J4 0.015 - 10
X1 530 +110 +40 °C / 93% RH / 440 V AC / 500 h --- B3291*A5/B5/C5 0.0068 - 5.6
X1 330 +110 +40 °C / 93% RH / 0 V / 1344 h --- B3291*A3/B3 0.022 - 6.8
X2 350 +110 +85 °C / 85% RH / 350 V AC / 1000 h yes B3292*U/V 0.047 - 20
X2 305 +110 +85 °C / 85% RH / 305 V AC / 1000 h yes B3292*M3/N3 0.1 - 4.7
X2 305 +105 +85 °C / 85% RH / 240 V AC / 1000 h yes B3293*A/B 0.047 - 2.2
X2 305 +110 +85 °C / 85% RH / 240 V AC / 1000 h yes B3292*H3/J3 0.1 - 15
X2 305 +110 +40 °C / 93% RH / 0 V / 1344 h --- B3292*C/D 0.01 - 30
X2 350 +110 +85 °C / 85% RH / 330 V AC / 1000 h yes B3292*A4/B4/S4 0.47 - 20
X2 305 +125 +85 °C / 85% RH / 240 V AC / 500 h yes B3292*P/Q 0.033 - 5.6
new
Y1 500 +125 +85 °C / 85% RH / 500 V AC / 500 h yes B3201*A5/B5/C5 0.001 - 0.00068
Y1 500 +110 +85 °C / 85% RH / 500 V AC / 1000 h yes B81123 0.001 - 0.01
Y2 300 +110 +40 °C / 93% RH / 0 V / 1344 h --- B3202*A3/B3/C3 0.001 - 1
Y2 350 +110 +85 °C / 85% RH / 350 V AC / 1000 h yes B3203*A/B/C 0.0047 - 1.2
Y2 300 +125 +40 °C / 93% RH / 330 V AC / 1000 h yes B3202*H/J 0.001 - 1

In order to download up to 20 files together as zip, please mark them with the check box. To start the download, please click the Download button at the end of the list.

  • Definition of terms
  • Typical applications
  • Questionnaire for new developments
  • General technical information
  • Standards and specifications
  • Marking and ordering code system
  • Taping and packing
  • Weights
  • Mounting guidelines
  • Quality
  • Environment
  • Symbols and terms
  • Overview
  • Cautions and warnings

In order to download up to 20 files together as zip, please mark them with the check box. To start the download, please click the Download button at the end of the list.


Applications

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