Product category:
Capacitors
News Release from: AVX | Subject: TCJ conductive polymer tantalum capacitors
Edited by the Electronicstalk Editorial
Team on 12 October 2004
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.
TCJ conductive polymer tantalum capacitors from AVX are constructed using a conductive polymer cathode resulting in devices that have a very low ESR, yet are very robust and easily capable of withstanding the rigours of lead-free soldering processes that are demanded by emerging international directives such as the RoHS and WEEE legislation The key advantage of conductive polymer cathode technology is that it enables users to take advantage of the volumetric efficiency of tantalum, but also offers significantly reduced ESR
This article was originally published on Electronicstalk on 25 Jul 2008 at 8.00am (UK)
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Whereas an A case size (1206) 10uF tantalum with traditional manganese dioxide cathode would have an ESR measured in ohms, the equivalent TCJ device has an ESR of less than 300mohm.
This makes the new capacitors highly suited for high frequency and high speed digital circuits.
According to Bill Millman, Technical Director of AVX's Tantalum Division, although there are other conductive polymer devices available, most competing products have cautious words in the spec sheet when it comes to lead-free soldering.
"Other manufacturers' products often come with the warning that they are not suitable for secondary reflow using higher temperature solder profiles", he explains.
"The TCJ range is capable of withstanding 260C reflow temperatures three or even four times, and is therefore fully compliant with the new directives".
The TCJ series is available from 4.7 to 330uF, in voltage ratings of 4, 6.3 and 10V, and in A, B and W case sizes.
Operating temperature range is -55 to +125C. Request a free brochure from AVX ...
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