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V481DB40 Datasheet(PDF) 1 Page - Littelfuse |
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V481DB40 Datasheet(HTML) 1 Page - Littelfuse |
1 / 4 page Varistor Products Revision: October 29, 2009 ©2009 Littelfuse, Inc. DA/DB Varistor Series Industrial High Energy Terminal Varistors > DA/DB Series Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/da or /db.html for current information. DA/DB Varistor Series Description The DA and DB Series transient surge suppressors are heavy-duty industrial Metal-Oxide Varistors (MOVs) designed to provide surge protection for motor controls and power supplies used in oil- drilling, mining, and transportation equipment. These UL recognized varistors have identical ratings and specifications but differ in case construction to provide flexibility in equipment designs. DA Series devices feature rigid terminals to ensure secure wire contacts. Both the DA and DB Series feature improved creep and strike distance capability to minimize breakdown along the package surface design that provides complete electrical isolation of the disc subassembly. See DA/DB Series Device Ratings and Specifications table for part number and brand information. Features • RoHS compliant and Lead–free • High energy absorption capability W TM up to 1050J • Wide operating voltage range V M(AC)RMS 130V to 750V • Screw terminals (DA Series),quick connect push-on connectors (DB Series) • Case design provides complete electrical isolation of disc subassembly • 40mm diameter disc • No derating up to 85ºC ambient Agency Approvals Absolute Maximum Ratings • For ratings of individual members of a series, see Device Ratings and Specifications chart Agency Agency File Number E320116 CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Continuous DA/DB Series Units Steady State Applied Voltage: AC Voltage Range (V M(AC)RMS) 130 to 750 V DC Voltage Range (V M(DC)) 175 to 970 V Transients: Peak Pulse Current (I TM) For 8/20μs Current Wave (See Figure 2) 40,000 A Single Pulse Energy Range For 2ms Current Squarewave (W TM) 270 to 1050 J Operating Ambient Temperature Range (T A) -55 to +85 ºC Storage Temperature Range (T STG) -55 to +125 ºC Temperature Coefficient (aV) of Clamping Voltage (V C) at Specified Test Current <0.01 %/ºC Hi-Pot Encapsulation (COATING Isolation Voltage Capability) (Dielectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301) 5000 V COATING Insulation Resistance 1000 MΩ RoHS DA SERIES DB SERIES |
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