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
Type 325
Type 326
Specifications
RoHS Compliant
Operating Temperature:
Rated Voltage:
Capacitance:
Capacitance Tolerance:
Leakage Current:
Cold Impedance:
Ripple Current Multipliers:
–55 °C to 125 °C
6.3 to 63 Vdc –
880 µF to 46,000 µF
–10 +75%
≤0.5 √CV µA, 4 mA max, 5 minutes
–55 °C multiple of 25 °C Z ≤2.5 @ 120 Hz
≤20 from 20–100 kHz
Ambient Temperature
45ºC
1.39
120 Hz
55ºC
1.3
65ºC
1.21
75ºC
1.11
85ºC
1.00
95ºC
0.88
105ºC
0.73
1 kHz
0.85
115ºC 125ºC
0.55
0.26
20-100 kHz
1.00
Frequency
see ratings
360 Hz
0.76
400 Hz
0.77
Life Test:
Load Life:
Shelf Life:
Outline Drawings
Vibration:
2000 h with rated voltage at 125 °C
∆ capacitance ± 10%
ESR 125 % of limit
DCL 100 % of limit
4000 h at full load at 85 °C
∆ capacitance ± 10%
ESR 200 % of limit
DCL 100 % of limit
500 h at 105 °C,
∆ capacitance ± 10%,
ESR 110% of limit,
DCL 200% of limit
10 to 55 Hz, 0.06” and 10 g max, 2 h each plane
L
.250
+0.015
-0.032
L
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
Notice and Disclaimer:
All product drawings, descriptions, specifcations, statements, information and
data (collectively, the “Information”) in this datasheet or other publication are subject to change. The
customer is responsible for checking, confrming and verifying the extent to which the Information con-
tained in this datasheet or other publication is applicable to an order at the time the order is placed. All
Information given herein is believed to be accurate and reliable, but it is presented without any guaran-
tee, warranty, representation or responsibility of any kind, expressed or implied. Statements of suitability
for certain applications are based on the knowledge that the Cornell Dubilier company providing such
statements (“Cornell Dubilier”) has of operating conditions that such Cornell Dubilier company regards
as typical for such applications, but are not intended to constitute any guarantee, warranty or representa-
tion regarding any such matter – and Cornell Dubilier specifcally and expressly disclaims any guarantee,
warranty or representation concerning the suitability for a specifc customer application, use, storage,
transportation, or operating environment. The Information is intended for use only by customers who
have the requisite experience and capability to determine the correct products for their application. Any
technical advice inferred from this Information or otherwise provided by Cornell Dubilier with reference
to the use of any Cornell Dubilier products is given gratis (unless otherwise specifed by Cornell Dubilier),
and Cornell Dubilier assumes no obligation or liability for the advice given or results obtained. Although
Cornell Dubilier strives to apply the most stringent quality and safety standards regarding the design
and manufacturing of its products, in light of the current state of the art, isolated component failures may
still occur. Accordingly, customer applications which require a high degree of reliability or safety should
employ suitable designs or other safeguards (such as installation of protective circuitry or redundancies
or other appropriate protective measures) in order to ensure that the failure of an electrical component
does not result in a risk of personal injury or property damage. Although all product-related warnings,
cautions and notes must be observed, the customer should not assume that all safety measures are indi-
cated in such warnings, cautions and notes, or that other safety measures may not be required.
CDM Cornell Dubilier
•
140 Technology Place
•
Liberty, SC 29657
•
Phone: (864)843-2277
•
Fax: (864)843-3800
•
www.cde.com
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