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MAL222090001E3 Datasheet(PDF) 4 Page - Vishay Siliconix |
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MAL222090001E3 Datasheet(HTML) 4 Page - Vishay Siliconix |
4 / 5 page 220 EDLC ENYCAP™ www.vishay.com Vishay BCcomponents Revision: 18-Jan-16 4 Document Number: 28421 For technical questions, contact: hybridstorage@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 MEASURING OF CHARACTERISTICS CAPACITANCE (C) Capacitance shall be measured by constant current discharge method. - Constant current charge with 10 mA/F to UR - Constant voltage charge at UR for 5 min - Constant current discharge with 10 mA/F to 0.1 V Fig. 2 - Voltage Diagram for Capacitance Measurement Capacitance value CR is given by discharge current ID, time t and rated voltage UR, according to the following equation: EQUIVALENT SERIES RESISTANCE (ESRDC) - Constant current charge to UR - Constant voltage charge at UR for 5 min - Constant current discharge to 0.1 V CR Rated capacitance, in F UR Rated voltage, in V U1 Starting voltage, 0.8 x UR in V U2 Ending voltage, 0.4 x UR in V U 3 Voltage drop at internal resistance, in V t1 Time from start of discharge until voltage U1 is reached, in s t2 Time from start of discharge until voltage U2 is reached, in s ID Absolute value of discharge current, in A U R U 1 U 2 t 1 t 2 ΔU 3 (s) 30 min C R F I D A x t 2 s - t 1 s U 1 V - U 2 V --------------------------------------------------------------- = ESRDC Equivalent series resistance, in U R Voltage drop at internal resistance, in V ID Absolute value of discharge current, in A ESR DC U 3 V I D A --------------------- = |
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