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Can't find any MLCC's? KEMET's Film SMD can save your day

nikhilstephen — Wed, 06 Oct 2021 21:43:48 GMT

Current Revision posted to Documents by nikhilstephen on 10/6/2021 9:43:48 PM

Can't find any MLCC's? KEMET's Film SMD can save your day from Nick Stephen

Tags: Film Capacitors, ceramic capacitors

What does COTS mean at KEMET?

mlhop — Wed, 06 Oct 2021 21:39:09 GMT

Current Revision posted to Documents by mlhop on 10/6/2021 9:39:09 PM

COTS means Commercial-Off-the-Shelf. OK, let us explain.

KEMET’s dielectric offerings are expansive with different variations of ceramic, tantalum, film and aluminum-based capacitors.

In addition to these varieties, we also offer multiple product grades to fit your needs: commercial, automotive, commercial-off-the-shelf (COTS), military, space and custom.

Many people are familiar with most of these classifications but there is still some confusion on what exactly a COTS classification represents.

What are COTS parts? For certain applications, you may want a higher reliability part that exceeds the performance and reliability characteristics of our standard commercial parts.

Auto-graded parts offer capacitors certified to the AEC-Q200 standard but does not offer the ability to have parts “up-screened”. Military and space grade parts are certified to various military standards and considered more reliable but come at a premium price.

With failure rated designs, additional screening options and a more affordable price, our commercial-off-the-shelf, or COTS, parts offer a happy medium.

The COTS option is available for both ceramic and tantalum-based dielectrics. These part series are produced with the same materials sets and manufacturing processes as our commercial and automotive-grade parts.

A series of tests and inspections are used to provide accelerated conditioning and 100% screening to eliminate failures. Each series of parts also has additional screening and conditioning options unique to that series to improve reliability and performance.

Ceramic COTS KEMET has been manufacturing and selling ceramic capacitors for decades and has been continuously expanding its portfolio: more dielectrics, higher capacitance, etc.

Wth the introduction of the COTS products, we have been able to further expand the product portfolio to better fit your needs. We currently offer our COTS products in the X7R and C0G dielectrics with three distinct series: standard COTS, high-voltage industrial and high-voltage military-equivalent.

All parts are designed and tested to a military standard or DLA drawing with a maximum PDA of 8%. All COTS testing includes voltage conditioning and post-electrical testing per MIL-PRF-55681.

Tantalum COTS for higher capacitance requirements, polymer capacitors are an excellent fit due to their volumetric efficiency. KEMET offers both tantalum with a MnO2 cathode and with our conductive polymer technology, which among other things offers longer operational life and high ripple current capabilities. These parts come with a multitude of packaging options varying from termination style (standard, facedown, etc.), construction (standard, multiple anode, etc.) and termination materials (tin, tin-lead, gold, etc.) to fit your needs.

Like their ceramic counterparts, these parts are all spec’d to a DLA drawing or military standard. They are also tested to meet a specific failure rate that you select and can have additional surge current testing performed per MIL-PRF-55365.

KEMET also has two exclusive patented testing options available for select KEMET COTS tantalum capacitors to improve reliability and performance: F-Tech and Simulated Breakdown Screening (SBDS). F-Tech is a manufacturing process that eliminates hidden defects in the tantalum dielectric by minimizing oxygen and carbon content in the anode, providing a stronger mechanical connection between anode and lead wire and significantly enhancing capacitor robustness. SBDS provides additional dielectric testing by identifying hidden defects. This is done through a nondestructive technique to simulate the breakdown voltage. These two tests, while at an additional cost, helps create a robust part that minimizes risk of failure. Conclusion More and more applications are requiring high reliability parts to minimize instances of failures.

Tags: polymer capacitors, tantalum_capacitors, cots, accelerated testing, commercial grade, tantalum, industrial grade, Polymer Aluminum, Tantalum Capacitors, ceramic alternative, ceramic capacitors, mlcc shortage

KEMET Introduces Gold Plated Terminations for High Temperature 200°C Applications

Former Member — Wed, 06 Oct 2021 20:42:46 GMT

Current Revision posted to Documents by Former Member on 10/6/2021 8:42:46 PM

Several Gold Thickness Options Available to Accommodate Alternative Attachment Methods

GREENVILLE, S.C., Sept. 24, 2015 /PRNewswire/ -- KEMET Corporation (NYSE: KEM), a leading global supplier of electronic components, introduced a series of gold plated termination options to its high temperature 200 degrees Celsius ceramic capacitor product lines.

Gold terminations were developed to accommodate mission critical, high reliability and high temperature applications where the use of pure tin and tin-lead plating may compromise long term performance and RoHS initiatives, respectively. Available on surface mount HT 200 degrees C Series and HV-HT 200 degrees C Series C0G dielectric product families, gold terminations eliminate concerns associated with high temperature reliability as well as long term storage. Thickness offerings range from 1.97 micro-in to greater than 100 micro-in. Furthermore, these options facilitate assembly by wire bonding, conductive adhesive (epoxy bonding) as well as most soldering attachment methods while ensuring improved long term performance and reliability.

"KEMET's new gold termination options further the company's commitment to supporting customers with increasingly higher temperature requirements," said Reggie Phillips, KEMET Product Line Manager. "Our patented base metal electrode dielectric technology combined with gold termination translates to a lead-free, RoHS and REACH compliant product capable of continuous and reliable operation up to 200 degrees Celsius."

For more information, please visit www.kemet.com/Hi-Temp-Ceramic.

About KEMET
KEMET Corporation is a leading global supplier of electronic components. We offer our customers the broadest selection of capacitor technologies in the industry, along with an expanding range of electromechanical devices, electromagnetic compatibility solutions and supercapacitors. Our vision is to be the preferred supplier of electronic component solutions demanding the highest standards of quality, delivery and service. KEMET's common stock is listed on the NYSE under the symbol "KEM." Additional information about KEMET can be found at http://www.kemet.com.

Cautionary Statement on Forward-Looking Statements

Certain statements included herein contain forward-looking statements within the meaning of federal securities laws about KEMET Corporation's (the "Company") financial condition and results of operations that are based on management's current expectations, estimates and projections about the markets in which the Company operates, as well as management's beliefs and assumptions. Words such as "expects," "anticipates," "believes," "estimates," variations of such words and other similar expressions are intended to identify such forward-looking statements. These statements are not guarantees of future performance and involve certain risks, uncertainties and assumptions, which are difficult to predict. Therefore, actual outcomes and results may differ materially from what is expressed or forecasted in, or implied by, such forward-looking statements. Readers are cautioned not to place undue reliance on these forward-looking statements, which reflect management's judgment only as of the date hereof. The Company undertakes no obligation to update publicly any of these forward-looking statements to reflect new information, future events or otherwise.

Certain risks and uncertainties that could cause actual outcome and results to differ materially from those expressed in, or implied by, these forward-looking statements are described in the Company's reports and filings with the Securities and Exchange Commission.

Contact:
Dr. John C. Boan
Vice President, Marketing
johnnyboan@kemet.com
954.766.2813

Tags: ceramic, mlcc, capacitors, drilling, down-hole, terminations, temperature, environments, voltage, oil, gold, high, harsh, ceramic capacitors

Polymer Capacitors for High Reliability applications (Reliability Assessment Method)

Former Member — Wed, 06 Oct 2021 20:42:40 GMT

Current Revision posted to Documents by Former Member on 10/6/2021 8:42:40 PM

Polymer technology is changing dramatically the capacitance landscape in what concerns electronic design. Still not evident to every engineer, the passive component, as we know, is usually one of the last concerns. But, spending some time about “what’s different”, engineers are understanding that this new technology offers new possibilities of Ripple Capability (2 to 3 times Higher than Standard Tantalums), higher capacitance in a frequency range above 100kHz and opens the possibility for new derating rules.

These arguments may represent a lower cost of ownership and enable an effective downsizing of the case sizes used and board space. Until today, when a customer was looking for an ultra-low ESR solution with a certain grading level, wouldn’t see polymer capacitors as a possible choice.

These capacitors were not suitable to apply the existing MIL-PRF-55365 Weibull Failure Rate Estimates. The model would require extended testing hours in order to get the first parts failing, so, not applicable.

KEMET developed one method that makes possible to grade the capacitors. The purpose of this post is to briefly describe the method employed to assess lot reliability for KEMET’s T540 and T541 Series. The objective of this method is to assess reliability levels corresponding to 0.1 Percent Per 1,000 Hours, 0.01 Percent Per 1,000 Hours and 0.001 Percent Per 1,000 Hours.

The essence of the method is to test a significant representative sample of each manufacturing lot ordered with this feature under accelerated voltage and/or temperature conditions to obtain the necessary unit hours with an Accept/Reject (A/R) Number of 1/2 to demonstrate the claimed reliability level.

The acceleration factors are predetermined for each design based on testing conducted under multiple conditions of temperature and voltage. The assessed reliability is equivalent to steady state operation at +85°C and full rated voltage as are the MIL-PRF-55365 Weibull Failure Rate Estimates.

The procedure is as follows:

Randomly select sample of predetermined size (at least 100 capacitors).
Mount components with an additional reflow (two (2) total reflows) to test boards using conditions per IPC/J-STD-020D that are consistent with the capacitor terminal finish.
Life test components using pre-determined conditions of time, temperature and voltage.

Count failures at the end of the test to demonstrate that the desired reliability level is achieved based on the A/R of 1/2.

This feature is an option already available in the T540 and T541 Series. To order with a B, C or D Level, please consider the ordering info in the product catalog.

Attachments:

community.element14.com/.../Evaluation-of-Polymer-Counter_2D00_Electrode-Tantalum-Capacitors-for-High-Reliability-Airborn-Applications.pdf	Evaluation of Polymer Counter-Electrode Tantalum Capacitors for High Reliability Airborn Applications.pdf
community.element14.com/.../New-High_2D00_Reliability-Assessment-Practices-for-Tantalum-Polymer-Capacitors.pdf	New High-Reliability Assessment Practices for Tantalum Polymer Capacitors.pdf

Tags: applications, capacitors, kemet, Tantalum Capacitors, reliability/high, polymer, ultra_low_esr

Polymer Capacitors for Automotive applications

Former Member — Wed, 06 Oct 2021 20:42:39 GMT

Current Revision posted to Documents by Former Member on 10/6/2021 8:42:39 PM

Ultra Low ESR, High Capacitance retention and AEC-Q200 qualified

KEMET introduced its T598 High Humidity/High Temperature Series, the first polymer electrolytic capacitor that meets all of the requirements of the Automotive Electronics Council's AEC-Q200 specification for passive components.

Building on the success of the T591 Series, KEMET further refined the design, materials and manufacturing to ensure the T598 Series delivers higher stability and endurance under harsh conditions. These improvements result in a design that exceeds the humidity bias testing requirements of 85 degrees Celsius with 85% relative humidity in addition to delivering stable electrical performance at 125 degrees Celsius.

"In 1999, KO-CAP offered engineers a breakthrough in high capacitance, low ESR and long lifetime capacitors, since this time, designers have utilized polymer electrolytic capacitors in space-constrained or high performance applications. Now that KO-CAPs meet all of the AEC-Q200 requirements, engineers can incorporate these innovative capacitors into automotive and other harsh environment applications.

The T598 Series is available today in capacitances of up to 330 microfarads and rated voltages up to 16 volts. The qualification test plan is in accordance with AEC-Q200 and these products are manufactured in an ISO TS 16949 certified facility. This series is available for Production Part Approval Process (PPAP), Part Submission Warrant (PSW) and Change Control Notification.

Typical applications include decoupling and filtering of DC-to-DC converters in automotive infotainment and advanced driver assistance, as well as industrial and telecom applications where harsh conditions such as high humidity and temperature are of concern.

For more information, please visit www.kemet.com/T598. For information about ESR and capacitance performance across rated temperature and voltage, models are available in KEMET's WebSPICE at webspice.kemet.com.

Tags: capacitor, aec-q200, ap:car_infotainment_system, automotive, ripple_current

What is a Capacitor? Video Series

migration.user — Tue, 05 Oct 2021 14:03:47 GMT

Current Revision posted to Documents by migration.user on 10/5/2021 2:03:47 PM

Thermal Sensors

migration.user — Tue, 05 Oct 2021 14:03:45 GMT

Current Revision posted to Documents by migration.user on 10/5/2021 2:03:45 PM

Tantalum Capacitors

migration.user — Tue, 05 Oct 2021 14:03:44 GMT

Current Revision posted to Documents by migration.user on 10/5/2021 2:03:44 PM

Pyroelectric Sensors

migration.user — Tue, 05 Oct 2021 14:03:43 GMT

Current Revision posted to Documents by migration.user on 10/5/2021 2:03:43 PM

Polymer Capacitors

migration.user — Tue, 05 Oct 2021 14:03:41 GMT

Current Revision posted to Documents by migration.user on 10/5/2021 2:03:41 PM

Polymer Aluminum

migration.user — Tue, 05 Oct 2021 14:03:39 GMT

Current Revision posted to Documents by migration.user on 10/5/2021 2:03:39 PM

Inductors

migration.user — Tue, 05 Oct 2021 14:03:38 GMT

Current Revision posted to Documents by migration.user on 10/5/2021 2:03:38 PM

Flex Suppressors

migration.user — Tue, 05 Oct 2021 14:03:38 GMT

Current Revision posted to Documents by migration.user on 10/5/2021 2:03:38 PM

Film Capacitors

migration.user — Tue, 05 Oct 2021 14:03:36 GMT

Current Revision posted to Documents by migration.user on 10/5/2021 2:03:36 PM

Ferrite Plates

migration.user — Tue, 05 Oct 2021 14:03:35 GMT

Current Revision posted to Documents by migration.user on 10/5/2021 2:03:35 PM

EMI Cores

migration.user — Tue, 05 Oct 2021 14:03:34 GMT

Current Revision posted to Documents by migration.user on 10/5/2021 2:03:34 PM

Electromagnets

migration.user — Tue, 05 Oct 2021 14:03:33 GMT

Current Revision posted to Documents by migration.user on 10/5/2021 2:03:33 PM

Current Sensors

migration.user — Tue, 05 Oct 2021 14:03:32 GMT

Current Revision posted to Documents by migration.user on 10/5/2021 2:03:32 PM

Conflict-Free Minerals

migration.user — Tue, 05 Oct 2021 14:03:30 GMT

Current Revision posted to Documents by migration.user on 10/5/2021 2:03:30 PM

Ceramic Capacitors

migration.user — Tue, 05 Oct 2021 14:03:30 GMT

Current Revision posted to Documents by migration.user on 10/5/2021 2:03:30 PM