Product category:
Circuit Protection Devices
News Release from: AVX | Subject: CANbus varistors
Edited by the Electronicstalk Editorial
Team on 05 December 2005
CANbus varistors protect three ways
Surface-mountable CANbus varistors save space by replacing three components typically used to protect against transient voltage spikes.
Surface-mountable AVX CANbus varistors save space by replacing three components typically used to protect against transient voltage spikes: two back-to-back Zener diodes and an EMC capacitor in parallel Parts also offer higher ESD protection and greater current and energy handling capabilities than diodes, as well as EMI/RFI attenuation across a wide frequency spectrum
This article was originally published on Electronicstalk on 25 Jul 2008 at 8.00am (UK)
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The CANbus varistor (a zinc-oxide based ceramic semiconductor device with nonlinear voltage-current characteristics) handles peak currents of 4A (8 x 20us) and displays a failure rate of less than 0.1 per billion hours.
With a working voltage of 18V (DC) and 14V (AC), devices are available in 0603, 0405 and 0612 case sizes.
Maximum leakage current is 2uA and maximum capacitance (at 1MHz, 0.5V RMS) is 22pF.
The CANbus series, part of AVX's TransGuard line of transient voltage suppression devices, is suitable for high and low-speed communication bus structures, including LIN, CAN and J1850.
Devices are particularly useful to serve the growing need for ESD protection in the automotive industry: port protection of CAN network ICs, sensors and module protection, LCD screen protection and remote keyless entry systems on both the transmitter and the receiver.
The parts are available in single, dual and quad configured packages. Request a free brochure from AVX ...
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