KEMET K-SIM is a parameter simulation tool to help aid design engineers in analyzing the performance of these capacitors over frequency, temperature, ripple, and DC bias conditions. The capacitor types include ceramic (MLCC), KO-CAP, tantalum, polymer, and aluminum polymer capacitor types. Each capacitor type behaves differently to the conditions of the circuit. Some capacitors show no changes to moderate changes while others show large changes in these conditions.

Inductor Core Loss Calculator Icon

Inductor Core Loss Calculator

This inductor core loss calculator can be used to calculate power dissipation due to non-idealities in the inductor core material. When combined with ACR and DCR, the core loss can be used to calculate the total power dissipation and subsequent temperature rise.

3D Capacitor STP

3D Models (STP Files)

Learn how to download a 3D capacitor model for each of KEMET’s five million unique part numbers. Each model is part number specific, making them suitable for rendering 3D PCBs. Files are provided in the STEP (STP) format. (Note, not all capacitor families are supported yet. The CAD button is shown for all part numbers with STP files.)


RF Ceramic Models (CBR Series)

Detailed models for the CBR Series of RF Ceramic Capacitors are available in the Modelithics Library. Click here to learn more about this library and how to get a 30-day license from Modelithics.

KEMET Aluminum Electrolytic Capacitor Life Calculator

Based on your application’s conditions, this tool can calculate the life for a specific KEMET Aluminum Electrolytic capacitor.

SSD Capacitor Calculator Icon

SSD Configuration Calculator

Selecting capacitors for SSD Hold-Up applications isn’t as simple as the one with the “biggest cap.” Instead, you need to take into account the space that is available and the energy necessary. This excel tool calculates the best possible configuration based on your application.

Aging Calculator for Ceramics

Excel version of an aging calculator for ceramic capacitors. User enters key parameters: referee time, aging rate, capacitance, and tolerance code. The output is a table and chart of the expected capacitance (with tolerance bands) at 1, 10, 100, 1k, 10k, and 100k hours.


A method of predicting reliability based on stress and environmental factors has been available for many capacitor types. The calculations found in MIL-HDBK-217 (revision F) allow the ambient temperature, application bias, and environmental factors to create multipliers of established failure rates for many military part types. Based on the monitored reliability of the non-military, commercial part types, these same multipliers can be used to define a projected application failure rate. The failure rates are listed as “FIT” (failures in time) and “MTTF” (mean time to failure).

This calculator software is intended to follow the calculations spelled out in this handbook for the specific part types that KEMET manufactures: ceramic multilayer capacitors, solid-tantalum capacitors, and the latest, the solid-aluminum capacitors. Just enter the capacitance, the voltage rating, and the part type, and the calculations are immediate. Manipulate the temperature and the voltage to see the impacts instantly.

Related Application Notes: Calculating FIT for Commercial Capacitors Example and the KEMET FIT Manual.