Datasheet

28
PEG 124
OPERATIONAL LIFE AND RIPPLE CURRENT, PEG124 (105°C)
Example:
Article: PEG124RL3150Q (Ø20 x 46 mm)
Ambient temperature (T
a
): 79°C
Ripple current, at 10kHz (I
AC
): 2.7 A
I
RAC
(105°C, ≥ 5kHz )= 1.10 A (from data table)
→ I
AC
/ I
RAC
(105°C) = 2.45
Operational life: Interpolation between the
L
op
-curves → L
op
~ 40 kh (blue curves)
When the capacitor load is at 100Hz,
use I
AC
/ I
RAC
(105°C, 100Hz) as input value to the
diagram (see data table). At other frequencies use
I
AC
/ I
RAC
(105°C, ≥ 5kHz) x 1/Corr =
Frequency correction factor, for ripple current (Corr):
FREQUENCY
300 Hz 1 kHz 5 kHz 100 kHz
Correction factor (Corr) 0.57 0.80 1.00 1.04
(Typical value)
Operational life (L
op
) at ambient temperature T
a
and ripple current I
AC
.
Diagram valid for Ø20 case size.
Operational life, Ø16 case size: 0.67 x diagram value
Ø13 case size: 0.44 x diagram value
Ø10 case size: 0.37 x diagram value
OPERATIONAL LIFE AND RIPPLE CURRENT, PEG124 (125°C)
Operational life (L
op
) at ambient temperature T
a
and ripple current I
AC
.
Diagram valid for Ø20 case size.
Operational life, Ø16 case size: 0.67 x diagram value
Ø13 case size: 0.44 x diagram value
Ø10 case size: 0.37 x diagram value
FREQUENCY
300 Hz 1 kHz 5 kHz 100 kHz
Correction factor (Corr) 0.57 0.80 1.00 1.04
(Typical value)
Example:
Article: PEG124MG368AQ (Ø16 x 37 mm)
Ambient temperature (T
a
):85°C
Ripple current, at 10kHz (I
AC
): 6.0 A
I
RAC
(125°C, ≥ 5kHz) = 2.6 A (from data table)5kHz) = 2.6 A (from data table)
→ I
AC
/ I
RAC
(125°C) = 2.3
Operational life: Interpolation between the
L
op
-curves → L
op
~20 kh x 0.67 = 13kh (blue curves)
When the capacitor load is at 100Hz,
use I
AC
/ I
RAC
(125°C, 100Hz) as input value to the
diagram (see data table). At other frequencies use
I
AC
/ I
RAC
(125°C, »5kHz) x 1/Corr =
Frequency correction factor, for ripple current (Corr):
Ø16 -factor
0,0
0,5
1,0
1,5
2,0
2,5
3,0
30 40 50 60 70 80 90 100 110 120
I /I (125°C)
AC
RAC
T (°C)
a
6 000h
10 000h
40 000h
20 000h
100 000h
OP
L = 350 000h
Max Ripple Current
30 40
50
60 70 80
90
100
0,0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
I /I (105°C)
AC
RAC
T (°C)
a
22 000h
40 000h
200 000h
100 000h
L = 350 000h
Max Ripple Current