Product category:
Capacitors
News Release from: AVX | Subject: TRJ tantalum capacitors
Edited by the Electronicstalk Editorial
Team on 07 March 2008
Tantalum capacitors cut ESR and boost
reliability
New parts within the TRJ professional series of tantalum capacitors deliver significantly lower ESR while achieving reliability levels twice those of standard tantalum devices.
The commercial power supply market is acutely aware of the need to minimise the failure rates, and this has led to increased demand for high-reliability low-ESR capacitors In response, for commercial, yet high-rel applications, AVX has introduced a range of new parts within its TRJ professional series that deliver significantly lower ESR while achieving reliability levels twice those of standard tantalum devices
This article was originally published on Electronicstalk on 27 Jan 2004 at 8.00am (UK)
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There are 124 new parts in the commercial high-rel (professional) TRJ series with ESR figures reduced down to levels previously only available from specialist low ESR series (TPS) devices.
This enables designers of power supplies for use in long life expectancy applications - industrial, automotive, commercial aerospace, medical etc - to use tantalum capacitors with the combined benefits of high reliability (0.5%/kh) and low ESR.
Further reading
Novel tantalums handle repeated reflow
TCJ capacitors are constructed using a conductive polymer cathode resulting in very low ESR, yet they are very robust and easily capable of withstanding the rigours of lead-free soldering processes.
Niobium oxide capacitors feature lower ESR
AVX has launched an ultralow-ESR version of its OxiCap niobium oxide solid electrolyte capacitor.
AVX developed its TRJ tantalum capacitor series for use in demanding environments that call for higher performance under electrical and mechanical stress, and the company introduced technical improvements into the production process that strengthen the structure of the capacitor and make it more robust.
There are several key differences between standard tantalum and TRJ products.
Well-tried tantalum powders are used to ensure the long-term stability of electrical performance.
Conservative design rules are followed both in design and manufacturing.
Very strict quality controls limits are applied and additional testing is performed.
100% hard surge current screening, extended electrical testing and accelerated burn-in process are used to achieve and verify the high robustness of the parts.
Leakage current is reduced to 75% of standard tantalum specification.
Low-ESR TRJ capacitors are especially suitable for filtering in power supply applications where they can significantly contribute to smoother filtering performance and long-term stability.
They can help reduce the size of end equipment, help deliver a higher power output within the same instrument size, and contribute to reducing costs by using fewer capacitors in a parallel configuration.
Standard and low-ESR TRJ capacitors are available in standard A, B, C, D and E EIA case sizes in voltages ranging from 6.3 to 50V and capacitance values from 0.1 to 470uF.
6.3, 10 and 25V rated voltage parts target the most popular output voltages of DC/DC convertors and battery applications (3.3, 5 and 12V). Request a free brochure from AVX ...
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