552D
Vishay Sprague Organic Polymer, Low ESR,
Surface Mount Tantalum Capacitors
www.vishay.com For technical questions, contact: tantalum@vishay.com Document Number: 40063
3Revision: 24-Nov-05
PERFORMANCE CHARACTERISTICS
1. Operating Temperature: Capacitors are designed to
operate over the temperature range of - 55 °C to
+ 105 °C.
1.1 Capacitors may be operated to + 105 °C with voltage
derating to 0.8 times the + 85 °C rating.
2. DC Working Voltage: The DC working voltage is the
maximum operating voltage for continuous duty at the
rated temperature.
3Surge Voltage: The surge DC rating is the maximum
voltage to which the capacitors may be subjected
under any conditions, including transients and peak
ripple at the highest line voltage.
3.1 Surge Voltage Test: Capacitors shall withstand the
surge voltage applied in series with a 33 ohm ± 5 %
resistor at the rate of one-half minute on, one-half
minute off, at + 85 °C, for 1000 successive test
cycles.
3.2 Following the surge voltage test, the dissipation factor
shall meet the initial requirements; the capacitance
shall not have changed more than ± 20 %. The
leakage current shall not exceed 150 % of the value
listed in the Standard ratings Table.
4. Capacitance Tolerance: The capacitance of all
capacitors shall be within the specified tolerance
limits of the normal rating.
4.1 Capacitance measurements shall be made by means
of polarized capacitance bridge. The polarizing
voltage shall be of such magnitude that there shall be
no reversal of polarity due to the AC component. The
maximum voltage applied to capacitors during
measurement shall be 2 volts rms at 120 Hz at
+ 25 °C. If the AC voltage applied is less than one-half
volt rms, no DC bias is required. Accuracy of the
bridge shall be within ± 2 %.
5. Capacitance Change With Temperature: The
capacitance change with temperature shall not
exceed the following percentage of the capacitance
measured at + 25 °C:
6. Dissipation Factor: The dissipation factor,
determined from the expression 2πfRC, shall not
exceed values listed in the Standard Ratings Table.
6.1 Measurements shall be made by the bridge method
at, or referred to, a frequency of 120 Hz and a
temperature of + 25 °C.
7. Leakage Current: Capacitors shall be stabilized at
the rated temperature for 30 minutes. Rated voltage
shall be applied to capacitors for 5 minutes using a
steady source of power (such as a regulated power
supply) with 1000 ohm resistor connected in series
with the capacitor under test to limit the charging
current. Leakage current shall then be measured.
7.1 At + 25 °C, the leakage current shall not exceed the
value listed in the Standard Ratings Table.
7.2 At + 85 °C, the leakage current shall not exceed 10
times the value listed in the Standard Ratings Table.
7.3 At + 105 °C, the leakage current , while measured at
0.8 times the rated voltage, shall not exceed 12 times
the value listed in the Standard Ratings Table.
8. ESR
8.1 ESR (Equivalent Series Resistance) shall not
exceed the values listed in the Ratings Table.
Measurement shall be made by the bridge method at
a frequency of 100 kHz and a temperature of + 25 °C.
9. Life Test: Capacitors shall withstand rated DC
voltage applied at + 85 °C for 1000 hours.
9.1 Following the life test, the dissipation factor shall not
exceed 1.5 times the value listed in the Standard
Ratings Table; the capacitance change shall not
exceed ± 20 %; the leakage current shall not exceed
0.1 CV (µA).
10. Solderability: Capacitors will meet the solderability
requirements of ANSI/J-STD-002, Test B, Category
3.
11. Resistance to Solder Heat: Capacitors will with
stand reflow soldering at + 240 °C + 5 °C for
10 seconds max. Capacitors should be allowed
to remain at ambient conditions for a period of up to
24 hours prior to electrical measurements.
11.1 Following the resistance to solder heat test,
capacitance, be within ± 20 % of the initial value, the
dissipation factor and the DC leakage current shall
not exceed the value listed in the Standard Ratings
Table.
12. Terminal Strength: Per UEC-384-3, minimum of 5N
shear force.
13. Flammability: Encapsulant materials meet UL94 V0.
14. Capacitor Failure Mode: The predominant failure
mode for solid tantalum capacitors is increased
leakage current resulting in a shorted circuit.
Capacitor failure may result from excess forward or
reverse DC voltage, surge current, ripple current,
thermal shock or excessive temperature. The
increase in leakage is caused by a breakdown of the
Ta2O5 dielecric. For additional information on leakage
failure of solid tantalum chip capacitors, refer to
Vishay Sprague Technical Paper, “Leakage Failure
Mode in Solid Tantalum Chip Capacitors.”
15. Humidity Test: Capacitors shall withstand 500 hours
at + 60 °C, 90 % to 95 % relative humidity, with no
voltage applied.
15.1 Following the humidity test, capacitance change shall
not exceed - 20 % to + 40 % of the value listed in the
Standard Ratings Table, dissipation factor shall not
exceed 150 % of the initial requirement; leakage
current shall not exceed 0.1 CV (µA).
+ 85 °C RATING + 125 °C RATING
WORKING
VOLTAGE
(V)
SURGE
VOLTAGE
(V)
WORKING
VOLTAGE
(V)
SURGE
VOLTAG E
(V)
6.3 8.0 5.0 6.5
- 55 °C + 85 °C + 105 °C
± 20 % ± 20 % ± 30 %