CDM Cornell Dubilier
• 140 Technology Place • Liberty, SC 29657 • Phone: (864)843-2277 • Fax: (864)843-3800 • www.cde.com
Type 325/326, –55 ºC to 125 ºC Long-Life, Switching Power Grade Radial
High Temperature and Ultra-Low ESR
The Types 325 and 326 are the ultra-wide-temperature, low-ESR
capacitors for switching power-supply outputs and automotive applications.
The 125 °C capability and exceptionally low ESRs enable high ripple-
current capability. With series inductance of 12 to 16 nH and ripple currents
to 27 amps one of these capacitors can save by replacing eight to ten of the
12.5 mm diameter capacitors routinely at the output of switching power
supplies. Type 325 has three leads for rugged, reverse-proof mounting, and
Type 326 has two leads
.
Highlights
•
2000 hour life test at 125 °C
•
Ripple Current to 27 amps
•
ESRs to 5 m
Ω
•
> 90% capacitance at –40 °C
•
Replaces multiple capacitors
Specifications
Type 325
Type 326
Operating Temperature:
–55 °C to 125 °C
Rated Voltage:
6.3 to 63 Vdc –
Capacitance:
880 µF to 46,000 µF
Capacitance Tolerance:
–10 +75%
Leakage Current:
≤0.5 √CV µA, 4 mA max, 5 minutes
Cold Impedance:
–55 °C multiple of 25 °C Z ≤2.5 @ 120 Hz
≤20 from 20–100 kHz
Ambient Temperature
Ripple Current Multipliers:
Life Test:
2000 h with rated voltage at 125 °C
∆ capacitance ± 10%
ESR 125 % of limit
DCL 100 % of limit
Load Life:
4000 h at full load at 85 °C
∆ capacitance ± 10%
ESR 200 % of limit
DCL 100 % of limit
Shelf Life
:
500 h at 105 °C,
∆ capacitance ± 10%,
ESR 110% of limit,
DCL 200% of limit
Vibration:
10 to 55 Hz, 0.06” and 10 g max, 2 h each plane
Outline Drawings
45ºC
55ºC 65ºC
75ºC
85ºC
95ºC
105ºC 115ºC 125ºC
1.39
1.3
1.21
1.11
1.00
0.88
0.73
0.55
0.26
120 Hz
360 Hz
400 Hz
1 kHz
20-100 kHz
see ratings
0.76
0.77
0.85
1.00
Frequency
Complies with the EU Directive
2002/95/EC requirement
restricting the use of Lead (Pb),
Mercury (Hg), Cadmium (Cd),
Hexavalent chromium (Cr(VI)),
PolyBrominated Biphenyls
(PBB) and PolyBrominated
Diphenyl Ethers (PBDE).