Technical Information - CECC & ESA/ESCC Approved Products
All-Tantalum electrodes
Approval of the manufacturing facility
•
Withstands high ripple current
•
Long life reliability
The facility is approved to manufacture non-solid electrolytic tantalum
capacitors under BS 9000, IECQ, CECC and MIL-STD-790 for
MIL-PRF-39006/-. The facility is registered on the Defence Contracts List
as satisfying the requirements of DEF STAN 05-21.
•
•
•
•
•
•
Reverse voltage capability
Approved to BS CECC 30 202 001
Approved to ESA/ESCC 3003/005
Approved to BS CECC 30 202 005
Approved to QC 300 202 GB 0001
Specifications
The TH capacitor can be offered to the following specifications covering
both the European range of values and the American range:
BS CECC 30 202 001, 30 202 005, 30202.012, QC 300 202 GB 0001.
Arcotronics In-House Specification 1000 SD 00007.
Severity of Tests
The BS CECC 30 202 001 test sequence includes tests at the
following severities.
The TH series is GAM T1 listed in France.
Environmental Classification
Sealing (Tracer Gas)
Rapid change of temperature
Vibration
Bump
Low Air Pressure
:
:
:
:
:
:
:
:
55/125/56
1 x 10-8 mbar din 3/s
30 cycles and 500 cycles
20g. (150mm or 196m/s2 for 30 hours)
4000 bumps at 390 m/s2
2 KN/m2 (20mbar)
2000 & 10000 hours
3 volts for 125 hours
Performance Curves & Technical Data
Publication 5008 lists the technical data for the TH range and includes:
Constructional details/performance curves: the variation of electrical
parameters with temperature and frequency/In-rush currents/long term
storage/parameter variation on endurance.
Endurances 85˚C and 125˚C
Reverse voltage
Usage at Higher Temperatures
Temperatures in excess of the upper category temperature of 125°C, to a
maximum of 200°C, can be sustained with appropriate derating. The 200°C
range is illustrated on pages 17 to 22.
Table 1- Ripple Current Ratings: Multiplying Factors
120Hz
800Hz
1kHz
10khz
40khz
100kHz
Frequency of
applied ripple current
Temp ˚C
Temp ˚C
Temp ˚C
Temp ˚C
Temp ˚C
Temp ˚C
≤
≤
≤
≤
≤
Ambient still air
55°
.60
.60
.60
.60
.60
85° 105° 125°
55° 85° 105° 125° 55°
85° 105° 125° 55° 85° 105° 125° 55°
85° 105° 125°
55° 85° 105° 125°
100%
90%
80%
70%
.39
.46
-
-
-
.71
.71
.71
.71
.71
.43
.55
.62
.69
.71
-
-
-
-
-
.72
.72
.72
.72
.72
.45
.55
.62
.70
.72
-
-
.88
.88
.88
.88
.88
.55
.67
.76
.85
.88
-
-
-
-
-
1.0
1.0
1.0
1.0
.63
.77
.87
.97
1.0
-
-
1.1 .69
1.1 .85
1.1 .96
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
.52 .35
.58 .44
.60 .46
.42
.52
.42
.52
.55
.52
.64
.68
.59
.73
.77
.65
-
-
-
1.1 1.07 .80
1.1 1.1 .85
-
≤
66 2/3%
√
.27
.55 .32
.32
.40 1.0
.45
.50
Basic Criteria
Ripple current rating is expressed in amps. r.m.s. for a particular frequency,
temperature and applied voltage.
The maximum RMS ripple current which can be applied is shown on
pages 4 to 6 for each value of capacitance and voltage rating. This is
shown at a frequency of 40 kHz and a temperature of 85°C. Multiplying
factors for other frequencies, temperatures and allowing for variation in
applied peak voltage are shown in Table 1 above.
Maximum temperature rise above ambient is 50°C up to 85°C ambient,
with linear derating above 85°C to a maximum temperature rise of 10°C at
125°C ambient.
The ripple current causes heating due to I2R losses, where R is the ESR of
the capacitor. Based on an assumption that the maximum temperature rise
is 50°C in still air and allowing for the upper temperature rating of the
capacitor, multiplying factors are derived at different temperatures.
Cooling conditions will affect the capability of the capacitor to handle
ripple current.
The sum of the peak a.c. and d.c. voltages must not exceed the rated
forward or reverse voltage at the appropriate temperature.
As the ESR is frequency dependent there are also multiplying factors
for frequencies.
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