Tantalum Capacitors minimize failure rate in power supplies.

Tag: Power Supply Products

Low ESR Enhanced Reliability Tantalum Capacitors from AVX MinimizeFailure Rates in Long Life Professional Power Supplies. Today, the commercial power supply market is acutely aware of theneed to minimize failure rates as more of their products are beingdesigned into high-end systems. This has led to an increased demandfor different levels of enhanced-reliability, low ESR capacitors.In response, AVX has introduced a new range of product within itsTRJ professional series tantalum chip which delivers significantlylower ESR while achieving reliability levels twice that of standardtantalum devices.

The launch program is part of AVX's continuous improvement policyand also the direct result of customer feedback. 124 new devicesare now available in the professional TRJ series with maximum ESRreduced to levels previously only available in specialty low ESRTPS series devices. This enables designers of power supplies foruse in long life expectancy applications - industrial, automotive,civil aerospace, medical etc. - to use tantalum capacitors with thecombined benefits of enhanced reliability (0.5%/1000hrs) and lowESR.

AVX developed its TRJ tantalum professional capacitor series foruse in demanding environments that call for higher performanceunder electrical and mechanical stress, and technical improvementswere made to strengthen the structure of capacitor and make it morerobust in such environments.There are several key differences between standard reliability TAJ/ TPS and TRJ products:

o Well-tried tantalum powders are used to ensure the long-termstability of electrical performance.Conservative design rules are followed both in design andmanufacturing. Very strict quality controls limits are applied andadditional testing is performed. 100% hard surge current screening,extended electrical testing and accelerated burn-in process areused to achieve and verify the high robustness of the parts.

Leakage current is reduced to 75% that of standard tantalumspecifications.Low ESR TRJ capacitors are especially suitable for filtering inpower supply applications where they can significantly contributeto smoother filtering performance and long-term stability. They canhelp reduce equipment size, help deliver a higher power outputwithin a given instrument size, and contribute to reducing costs byusing fewer capacitors in a parallel configuration.Standard and low ESR TRJ capacitors are available in EIA standardA, B, C, D and E case sizes in voltages ranging from 6.3 to 50V andcapacitance values from 0.1 - 470.