Datasheet

TC-SPC-SCE-36-E-2017
6/7
6. Measuring Method
1) Charge and Discharge procedure
(figure 6-1)
A) Charge the capacitor using constant current I to rated voltage V
0
B) Keep rated voltage 5 min
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*T
1
/ (V
1
-V
2
)
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 CAPACITORS SHOULD BE DISCHARGED WITH RESISTOR FOR 12 HOURS
OR MORE BEFORE EACH TIME MEASUREMENT OF CAPACITANCE OR ESR.
7. Environmental Management
All SPSCAP products are RoHS compliant product.
6-1
ΔV
T
1
V
0
V
1
V
2
V
T