TDK Electronics · TDK Europe

Capacitor Life And Rating Application (CLARA)

Find the Right Film Capacitor in Just a Few Clicks 

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. Additionally, CLARA allows to include personal notes during a search and it is directly linked to the TDK Product Center for sample requests or product inquiries.

*Expected lifetime is an estimation and it is not provided in case of excess of any of the given ratings or in case of products that have no given reliability or lifetime figures in the corresponding product data sheet.

The use of CLARA is subject to the terms and conditions of the License Agreement.

CLARA stores cookies on your computer, tablet, smart phone and other devices to process information technically essential for the operation of the program. Please see Use of Cookies for details. 

Application Overview

TDK CeraLink capacitors

Download Capacitor Life and Rating Application (CLARA) Presentation Manual here: Download Presentation Manual

Tool for power circuit designers using film capacitors 

  • Powerful parametric search based on capacitor parameters
  • Powerful simulation of given application conditions
  • Combination of both (search by simulation) in the Advance Search Application Based module

Indication of safety margins and limits

  • Returns the maximum allowed temperature at the target operation voltage
  • Returns the maximum allowed voltage at the target operation temperature
  • Thus providing more flexibility to the designers to adjust whatever is more convenient

Part characteristics

  • Download curves of ESR, IRMS vs. frequency, impedance, 3D step, spice models 

Part comparison

  • Up to 4 part numbers
  • By characteristics
  • By simulation of application conditions

Explore CLARA

Search and simulation

  • Parametric search of part numbers based on film capacitor parameters
  • Access to part numbers characteristics and download of useful information: STEP files, spice models, curves
  • Part number comparison of characteristics and adding personal notes
  • Simulation of application conditions, up to 4 part numbers at the same time

Refine search tips

  • Limiting by range, by tolerance value, by dimensions


  • Input of application conditions in the previous selected 4 part numbers
  • Mission profile with two load conditions in this example, up to 5 can be input
  • Harmonics with either IRMS or VRMS
  • Save conditions for later use
  • Description of input application parameters, results and safety index for every load condition
  • Example of waveforms with the correspondence to application parameters

Simulation knowing the part number

Two ways to access to the simulation module:

  • Option 1
    • Select simple search, input the part number (no need to be full part number), and select the part number from the list
    • Then select application & useful life simulation
  • Option 2
    • Select directly from CLARA home page, application & useful life simulation
    • Then input the part number with minimum 11 digits and select from the list
    • Restore application conditions from a previous saved file

Advance search application based

  • Simple search is executed based on capacitor parameters and not application paramaters
  • Advance search is executed based on application parameters, combined optionally with capacitor parameters
  • 1. Circuit position, 2. External approval, 3. Capacitance, 4. Application, 5. Others
  • Runs automatic simulation on possible part numbers

Start Capacitor Life And Rating Application to Find the Right Film Capacitor