Datasheet

Electric Double Layer Capacitors Product Specification
8
9. Measuring Method of Characteristics
Capacitance
1) Charge the STARCAP with constant current 50±0.1㎃
to the voltage of V1(=4.4V) for 1 hour.
2) Discharge the STARCAP with constant current(A) 3±0.1㎃
to the voltage of V2(=2.2V) while measure the discharge time(T).
3) Calculate capacitance using the following formula.
Equivalent Series
Resistance
(ESR @1kHz)
z Measure ESR by the LCR meter. (Frequency:1㎑, Bias Voltage : 0
+0.05
V)
or
z Calculate ESR using the following formula.
R[Ω] = V[V] / I[A]
* i[㎃] = I[A] x 10
-3
R : Internal resistance(ESR) [Ω]
V : Measured voltage between terminals [V]
i : Current 1mA(A.C.)
Leakage Current
1) Apply 5.5±0.1V to the STARCAP.(E
0
)
2) Measure V
R
after 30±0.5 min.
3) Calculate current using the following formula.
LC = (V
R
/R
C
) x 10
3
[mA]
V
R
= Measured value
R
C
= 100Ω (0.47F, 0.68F)
1000Ω (1F)
☞ The STARCAP should be shorted before each measurement as follows ;
Capacitance : 60 min. , ESR : 15 min. , LC : 15 min.