Product category:
Circuit Protection Devices
News Release from: AVX | Subject: Automotive Series VC13, 14, 15 and 20
Edited by the Electronicstalk Editorial
Team on 03 March 2008
Transient voltage suppression on the
road
Automotive-grade multilayer chip varistors operate over a -55 to +125C temperature range and are specified to satisfy load dump and jump start test requirements.
New medium-power multilayer chip varistors from AVX provide transient voltage suppression and ESD protection for automotive electronics Automotive Series VC13, 14, 15 and 20 devices operate over a -55 to +125C temperature range, feature energy ratings of up to 25J in a 2220 case size, and are specified with load dump and jump start test requirements
This article was originally published on Electronicstalk on 27 Jan 2004 at 8.00am (UK)
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The ZnO-based varistors feature nonlinear, bidirectional voltage-current characteristics like back-to-back Zener diodes and an EMC capacitor in parallel.
By integrating this functionality into a single device the varistors require much less PCB area and reduce component placement costs.
Varistors offer many electrical advantages over Zener diodes, including multiple strike capability without degradation, higher in rush current capability, faster turn-on time, and inherent EMI/RFI attenuation.
The varistor is also suitable for protecting devices from induced slow speed transient voltages and currents as well as ensuring negligible degradation in signal integrity.
Automotive Series devices have palladium-silver terminations, typical operating voltages of 16V DC and 14V RMS (one device is rated at 34V DC and 30V RMS), maximum leakage current of 100uA, maximum peak current up to 1200A (8 x 20us), mean power dissipation of 30mW or less, and a transient energy rating of 0.6 to 12J (10 x 1000us).
Case sizes are 1206, 1210, 1812 and 2220. Request a free brochure from AVX ...
Clamping voltage is 40V in general with one device offering 77V.
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