Vishay bccomponents, Ripple current and useful life, Additional electrical data – C&H Technology 102 PHR-ST User Manual
Page 9: Maximum ripple current
Document Number: 28371
For technical questions, contact:
www.vishay.com
Revision: 03-May-10
175
101/102 PHR-ST
Aluminum Capacitors
Power High Ripple Current Screw Terminals
Vishay BCcomponents
Note
(1)
Low ESL designs available on request
RIPPLE CURRENT AND USEFUL LIFE
Note
• Calculation example for 102 series. Maximum ripple current multiplier = 1.6 x 1.3 x 1.25 = 2.6
ADDITIONAL ELECTRICAL DATA
PARAMETER
CONDITIONS
VALUE
Voltage
Surge voltage
≤ 250 V versions
U
s
= 1.15 x U
R
≥ 350 V versions
U
s
= 1.1 x U
R
Reverse voltage
U
rev
≤ 1 V
Current
Leakage current in µA
After 1 minute at U
R
I
L1
≤ 0.006 C
R
x U
R
After 5 minutes at U
R
I
L5
≤ 0.002 C
R
x U
R
Inductance
Equivalent series inductance (ESL)
Case Ø D = 35 mm
Typ. 13 nH
Case Ø D = 50 mm
Typ. 16 nH
Case Ø D = 65 mm
Typ. 19 nH
(1)
Case Ø D = 76 mm
Typ. 20 nH
(1)
Case Ø D = 90 mm
Typ. 21 nH
(1)
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
1
1.1
1.2
1.3
1.4
1.5
Air Velocity (m/s)
I
R
Free
I
R
Forced
Fig.3 Multiplier of ripple current (I
R
) as a function of air flow
MAXIMUM RIPPLE CURRENT
PARAMETER
CONDITION
MAXIMUM RIPPLE CURRENT MULTIPLIER
VALUE
Ambient temperature (T
amb
)
70 °C
From nomogram; see fig. 4
1.6
Operating frequency (f)
400 Hz
From frequency; table 4
1.3
Air flow
2 m/s
From air-flow; see fig. 3
1.25