Varistor Metal Oxide Varistor Products Page 57 Varistor Metal-Oxide Varistor Products

2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/14/17 Metal-Oxide Varistors (MOVs) Surface Mount Multilayer Varistors (MLVs) > AUML Series Explanation of Terms Maximum Continuous DC Working Voltage (V M*(DC)+ + ) This is the maximum continuous DC voltage which may be applied, up to the maximum operating temperature (125C), to the ML suppressor. This voltage is used as the reference test point for leakage current and is always less than the breakdown voltage of the device. Load Dump Energy Rating W LD + This is the actual energy the part is rated to dissipate under Load Dump conditions (not to be confused with the "source energy" of a Load Dump test specification). Maximum Clamping Voltage V C + This is the peak voltage appearing across the suppressor when measured at conditions of specified pulse current and specified waveform (8/20 s). It is important to note that the peak current and peak voltage may not necessarily be coincidental in time. Leakage Current I L + In the nonconducting mode, the device is at a very high impedance (approaching 10 6 at its rated working voltage) and appears as an almost open circuit in the system. The leakage current drawn at this level is very low (<25 A at ambient temperature) and, unlike the Zener diode, the multilayer TVS has the added advantage that, when operated up to its maximum temperature, its leakage current will not increase above 500 A. Nominal Voltage V NDC+ + This is the voltage at which the AUML enters its conduction state and begins to suppress transients. In the automotive environment this voltage is defined at the 10mA point and has a minimum (V N(DC) MIN ) and maximum (V N(DC) MAX ) voltage specified. Additional Information Datasheet Samples Resources

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