Information

37
Design and specifi cations are subject to change without notice. Ask factory for technical specifi cations before purchase and/or use.
Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation.
Gold Capacitors Technical Guide
Storage Capabilities
Storage Capabilities of a Gold Capacitor
V
0
V
1
Lower limit voltage
for memory
backup
Backup time
Capacitor’s voltage
Time
T=C (V
0
-V
1
) / (I + I
L
)
Real time clock or
memory
GC
Example:
V
0
= 2.5V, V
1
= 1.8V, I = 10uA, C = 0.2F
T = 0.2 ( 2.5 –1.8 ) / (10 e-6 + 0.2x10
-6
)
= 0.14/10.2x10
-6
= 13,725 seconds
T: Backup time (second)
C: Capacitance of Gold Capacitor (F)
V
0
: Applied voltage(V)
V
1
: Lower limit voltage for memory backup(V)
I: Current during backup(A)
I
L
: Leakage current(A) about 0.2uA
= 3.8hours