NESSCAP® Ultracapacitor Products Technical Info. 1. The Measurement Condition 1-1 Capacitance 1) Constant current charge with 10mA/F to VR 2) Constant voltage charge at VR for 5min I x ( T2 - T 1 ) C = V1 – V2 Where C Voltage (V) 3) C Constant t t currentt di discharge h with ith 10 10mA/F A/F to t 0.1V 0 1V is the capacitance (F) ; VR 5 min V1 V2 I is the discharge current (A); VR is the rated voltage (V) V1 is the measurement starting voltage, 0.8ⅹVR (V); V2 is the measurement end voltage, 0.4ⅹVR (V); T1 is the time from discharge start to reach V1(s); T2 is the time from discharge start to reach V2(s) . Time T1 T2 1-2 ESRAC 1) ESRAC is measured by 4-probe impedance analyzer at the following conditions. - Condition : Potentiostat mode AC Amplitude : 5mV Frequency : 1kHz, 100Hz 1-3 ESRDC 2) Constant voltage charge at VR for 5min VR 3) Constant current discharge to 0.1V Voltage (V) 1) Constant current charge to VR ∆V Rd = Where Rd I ∆V is the ESRDC ((Ω); ); ∆V is the voltage drop for 10ms (V); I 5 min i Time is the discharge current (A). 1-4 Leakage Current 1) The capacitor is charged to the rated voltage at 25℃. 2) Leakage current is measured after 72 hours by current measurement equipment. ※ Life time is provisional value © NESSCAP 2008. All Rights reserved. Design, Specifications are subjected to change without notice. Nesscap Co., Ltd. (446-901) 750-8, Gomae-dong, Giheung-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-289-0721 Fax: +82-31-286-6767 e-mail: marketing@nesscap.com www.nesscap.com ISO 9001, ISO 14001, TS 16949 NESSCAP® Ultracapacitor Products Technical Info. 2. Technical Information 1) Definition of Max Current - Current for 1sec discharge from the rated voltage to the half of it in constant current discharge, IMAX (A) = Where △t C Rd VR 1/2 VR △ t / C + Rd is the discharge time (sec), 1 sec in this case ; is the capacitance (F); is the ESRDC (Ω); is the rated voltage (V). 2) Definition of Max Stored Energy EMAX (Wh) = ½ CVR2 3600 Gravimetric Specific Energy ( Wh / kg ) = EMAX Weight ※ Life time is provisional value © NESSCAP 2008. All Rights reserved. Design, Specifications are subjected to change without notice. Nesscap Co., Ltd. (446-901) 750-8, Gomae-dong, Giheung-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-289-0721 Fax: +82-31-286-6767 e-mail: marketing@nesscap.com www.nesscap.com ISO 9001, ISO 14001, TS 16949