Datasheet

5
Document number: DT14-08-201911-E
Rev. & Date: V2019-1 2019.10.24
2.7V 2000F CDCL-STZ
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1) Charge and Discharge procedure (Figure 1)
A) Charge the capacitor using constant current I to rated voltage V
0
B) Keep rated voltage 5 mins
C) Discharge the capacitor using constant current I to half rated voltage, record discharge time
T
1
during voltage change from V
1
to V
2
D) Rest 2-5s, record voltage change ΔV
E) Discharge it to a very low voltage around 0.01V
F) V
1
=85% V
0
V
2
=50% V
0
2) Capacitance
C=I·T1/(V1-V2)
C: Capacitance (F)
I: Constant Discharge Current (A) T
1
: Discharge Time (S)
V
1
-V
2
: Voltage Change (V)
3) DC ESR
DC ESR=ΔV/I
DC ESR: DC Equivalent Series Resistance (Ω)
ΔV: Voltage Change (V)
I: Constant Discharge Current (A)
4) AC ESR
Measure AC ESR using LCR meter
Frequency: 1KHz
Voltage: fully discharge
REMARK: SPSCAP EDLC SHOULD BE DISCHARGED WITH RESISTOR FOR AT LEAST 12 HOURS
BEFORE MEASUREMENT OF CAPACITANCE OR ESR.
Figure 1