Series CE2
Vishay
Wet Tantalum Capacitor, Button,
All-Tantalum Case, - 55 °C to + 125 °C Operation
FEATURES
• All-Tantalum electrodes eliminate silver migration
• Withstands high ripple current
• Long life reliability
• Reverse voltage capability
• Instant use after long storage
• Mounting: Through-hole
PERFORMANCE CHARACTERISTICS
Operating Temperature: - 55 °C to + 125 °C
Voltage Range: 6.3 VDC to 125 VDC
Capacitance Range: 82 µF to 1800 µF
SPECIFICATIONS
Environmental classification: 55/125/56
Vibration: 10 Hz to 2000 Hz, 0.75 mm or 98 m/s2, 15 h
Bump: 390 m/s2, 4000 bumps
Shock: 981 m/s2
Acceleration: 981 m/s2
Low air pressure: 1 kPa
INTRODUCTION
This conveniently-packaged polar button unit employs a
non-solid electrolyte, and has a sintered tantalum anode.
The anode is produced from a high capacitance powder
resulting in a capacitor of small size and large CV product.
APPROVALS
These capacitors are available released to:
• BS CECC 30 202 002
The cathode is also of tantalum and overcomes the
restrictions of a silver cathode system in allowing a high
ripple current rating and application of a 3 V reverse
RIPPLE CURRENT CAPABILITY
The maximum allowable ripple current is 1 ARMS up to 85 °C
and 750 mARMS to 125 °C. These values apply under normal
cooling conditions and are irrespective of frequency or
waveform. The algebraic sum of the AC peak and DC
voltages must not exceed the forward or reverse voltage
ratings at the relevant temperature.
potential. This all-tantalum construction results in
non-catastrophic wear-out mechanism.
a
The seal is a high efficient system comprising a PTFE gasket
clamped between coined plates of tantalum by
a
At certain frequency/temperature/DC voltage combinations
higher levels of ripple current may be used. The
applications department should be contacted before the
above levels are exceeded.
work-hardened nickel ring. This type of seal, common to all
button styles, is largely responsible for their long life and high
reliability and severe military environments.
The CE2 series is an extension of the CA2 series with the
anode produced from selected powder of very high
capacitance giving a higher CV product.
REVERSE VOLTAGE CAPABILITY
The CE2 series employ tantalum cathodes which allow the
continuous application of reverse potentials not exceeding
3 V over the whole temperature range.
The CE2 series ranges are available in several termination
options. These include a mounting stud and pins for circuit
mounting.
SURGE VOLTAGE
The surge voltage capability is 115 % of the voltage rating at
the relevant temperature.
APPLICATIONS
The CE2 series are designed for use in general military and
professional applications. For example: Power supply
“smoothing” filter networks, switching, by-pass, timer
functions and where reverse potentials occur.
TEMPERATURE RANGE
The capacitor is designed for operation between - 55 °C and
+ 125 °C, with linear voltage derating above + 85 °C to 66 %
of the rated voltage at + 125 °C.
WEIGHT
The CE2 style with a stud termination weighs approximately
18.1 g, including the nut. The CE2 styles, which has a printed
circuit board mounting, weighs approximately 17.3 g.
CAPACITANCE TOLERANCE
The standard capacitance tolerance is
special tolerances are available by arrangement.
20 % although
document number: 42102
Revision: 22-Mar-10
for technical questions, contact: tantalum@vishay.com
www.vishay.com
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