Specification for Release Customer : Ordercode: 820444611E Description : Disk Varistor HighSurge WE-VD DATE : 2010-04-19 A Dimensions: Diameter 14mm A B C D D E F G G 16.5 max. 7.5 ± 1.0 0.8 ± 0.05 6.0 typ. 8.6 max. 20.5 max. 25.0 min. 4.3 ± 1.0 B Electrical properties: Properties Value Unit Tol. VRMS 460 V max VDC 615 V max 8/20µs imax 6000 A max 10/1000µs W max 230.0 J max Continuous Pmax 0.6 W max 1mA VVar 750 V ±10% 50A @ 8/20µs v Cl 1240 V max 1 kHz CP 270 pF typ 6000 / 3000 V/A 2000 V max Rated Power Varistor Voltage max. Clamping Voltage C Body marking: Test Conditions max. AC Operating Voltage max. DC Operating Voltage Withstanding Surge Current max. Energy Capacitance Voltage Protection Rating mm mm mm mm mm mm mm mm D Test equipment: WESURGE from Würth Elektronik Part Branding (digit 4-9 of ordercode) Approvals (see F) Date Code & Internal Symbol WE-S 444611 YM* E Test conditions: Keithley 2410 for Varistor Voltage Humidity: EMC Partner MIG0603CLV2 for Clamping Voltage Temperature: 33% +25°C EMC Partner MIG0624LP1 for max. Surge Current and Energy Agilent E4980A LCR Meter for Capacitance F Material & approvals: G General specifications: Body Insulation: 2500Vrms Withstanding Voltage Storage Temperature: Coating: Epoxy, UL 94V-0, halogen free Max. Operating Temperature: -40°C … +125°C Approvals: UL1449 3rd (E332875) for use in Type 2 SPD Max. Ambient Temperature: -40°C … +115°C VDE (40016998) & IEC 60950-1 Annex Q Max. Response Time: -20°C … + 60°C 25ns CSA (224856) General Release: .................................................................................. Date .................................................................................. Checked Customer .................................................................................. Signature Würth Elektronik .................................................................................. Approved JB Version 1 Name Modification 2010-04-19 Date Würth Elektronik eiSos GmbH & Co. KG D-74638 Waldenburg · Max-Eyth-Strasse 1 · Germany · Phone (+49) (0) 7942 - 945 - 0 · Fax (+49) (0) 7942 - 945 - 400 http://www.we-online.com PAGE 1 OF 5 Specification for Release Customer : Ordercode: 820444611E Description : Disk Varistor HighSurge WE-VD DATE : 2010-04-19 H Typical I/V Characteristic: Max. Leakage Current Max. Clamping Voltage Voltage [V] 1 000 100 1,E-6 1,E-5 1,E-4 1,E-3 1,E-2 1,E-1 1,E+0 1,E+1 1,E+2 1,E+3 1,E+4 Current [A] General Release: .................................................................................. Date .................................................................................. Checked Customer .................................................................................. Signature Würth Elektronik .................................................................................. Approved JB Version 1 Name Modification 2010-04-19 Date This electronic component has been designed and developed for usage in general electronic equipment. Before incorporating this component into any equipment where higher safety and reliability is especially required or if there is the possibility of direct damage or injury to human body, for example in the range of aerospace, aviation, nuclear control, submarine, transportation, (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network etc, Würth Elektronik eiSos GmbH must be informed before the design-in stage. In addition, sufficient reliability evaluation checks for safety must be performed on every electronic component which is used in electrical circuits that require high safety and reliability functions or performance. Würth Elektronik eiSos GmbH & Co. KG D-74638 Waldenburg · Max-Eyth-Strasse 1 · Germany · Phone (+49) (0) 7942 - 945 - 0 · Fax (+49) (0) 7942 - 945 - 400 http://www.we-online.com PAGE 2 OF 5 Specification for Release Customer : Ordercode: Description : 820444611E Disk Varistor HighSurge WE-VD I Typical Pulse Lifetime Derating: 10 000 1 2 No. of Pulses 10 1 000 100 imax [A] 1 000 10 000 100 000 100 1 000 000 10 10 100 1 10 000 1 000 Pulse Duration [µs] Note: Varistors do not have an endless lifetime. Also a well dimensioned varistor may fail due to enormous overload. This will result in heating, smoke emission and / or displosion of varistor itself. Therefore we recommend to place varistors separate within a box on PCB. Furthermore a fuse should be in the varistor’s current path to avoid secondary current in case the varistor fails. This fuse can protect against secondaty currents and therewith caused damages. General Release: .................................................................................. Date .................................................................................. Checked Customer .................................................................................. Signature Würth Elektronik .................................................................................. Approved JB Version 1 Name 2010-04-19 Modification Date This electronic component has been designed and developed for usage in general electronic equipment. Before incorporating this component into any equipment where higher safety and reliability is especially required or if there is the possibility of direct damage or injury to human body, for example in the range of aerospace, aviation, nuclear control, submarine, transportation, (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network etc, Würth Elektronik eiSos GmbH must be informed before the design-in stage. In addition, sufficient reliability evaluation checks for safety must be performed on every electronic component which is used in electrical circuits that require high safety and reliability functions or performance. Würth Elektronik eiSos GmbH & Co. KG D-74638 Waldenburg · Max-Eyth-Strasse 1 · Germany · Phone (+49) (0) 7942 - 945 - 0 · Fax (+49) (0) 7942 - 945 - 400 http://www.we-online.com PAGE 3 OF 5