KEMET®
APPLICATION NOTES FOR TANTALUM CAPACITORS
c. Applied force—3 pounds (1.4 kg).
d. Test Condition letter—C (M39003 Test Condition let-
ter—D)
cycling are required. Conditioning prior to the first cycle
will be 15 minutes at the following standard inspection
conditions:
e. Applied Force—1 pound, 3 bends.
a. Relative Humidity—Less than 50%.
b. Ambient Temperature—25°C ±5°C.
• VIBRATION; HIGH FREQUENCY: Per MIL-STD-202,
Method 204, Condition D, 10 Hz to 2000 Hz.
a. Mounting—Capacitors shall be mounted on a fixture
by the body. Leads shall be supported by rigidly sup-
ported terminals.
b. Electrical load conditions—During the test, the spec-
ified DC rated voltage shall be applied to the capaci-
tors.
c. Final measurements are made after stabilization at
room temperature.
• MOISTURE RESISTANCE—MIL-STD-202, Method 106:
Capacitors shall be tested in accordance with
MIL-STD-202, Method 106 including the following
details:
a. Mounting—The capacitors shall be mounted by nor-
mal mounting means
c. Test condition letter—D (20 G).
d. Duration and direction of motion—4 hours in each of
two mutually perpendicular directions (total of 8
hours), one parallel and the other perpendicular to
the axis.
e. Measurements during vibration—During the last
cycle, an electrical measurement shall be made to
determine intermittent operation or open- or short-cir-
cuiting. Observations shall also be made to deter-
mine intermittent contact or arcing or open- or short-
circuiting. Detecting equipment shall be sufficiently
sensitive to detect any interruption with a duration of
0.5 ms, or greater.
b. Initial Measurements
c. Polarizing and Load Voltage—Not applicable
d. Final measurements—After the final cycle and within
2 to 6 hours after removal of the capacitors from the
humidity chamber, capacitance, dissipation factor,
and DC leakage will be measured.
DCL should not exceed the initial 25°C limit.
Capacitance should be within ±10% of the initial mea-
sured value.
DF should not exceed the initial 25°C limit.
f. Examination after test—Capacitors shall be visually
examined for evidence of mechanical damage.
• RESISTANCE TO SOLVENTS
Method 215:
— MIL-STD-202,
• SHOCK TEST: Per MIL-STD-202, Method 213. The fol-
lowing details shall apply:
Brushing required after test.
DCL meets limit shown in respective Part Number
Tables.
Capacitance meets applicable tolerance.
DF meets limits shown in respective Part Number
Tables.
a. Special mounting means—Capacitors shall be rigidly
mounted on a mounting fixture by the body. When
securing leads, care shall be taken to avoid pinching
the heads.
b. Test-condition letter—I (100 G peak). 6 ms. (saw-
tooth)
No visible damage to case or marking.
• RESISTANCE TO SOLDERING HEAT — MIL-STD-202,
Method 210, Test Condition.
c. Measurements and electrical loading during shock—
During the test, observations shall be made to deter-
mine intermittent contact or arcing or open- or short-
circuiting. Detecting equipment shall be sufficiently
sensitive to detect any interruption with a duration of
0.5 ms. The DC rated voltage shall be applied to the
capacitors during the test.
Letter B. (260° for 10 Sec.)
1
4
Leads shall be immersed to within ⁄ inch of the capac-
itor body. Capacitance, DF, and DCL should meet origi-
nal limits shown in respective Part Number Tables.
• SOLDERABILITY — MIL-STD-202, Method 208;
Number of terminations on each capacitor tested: 2.
d. Examinations after test—Capacitors shall be visually
examined for evidence of arcing, breakdown, and
mechanical damage.
Depth of insertion in flux and solder to within .125" of
capacitor body.
• HUMIDITY LIFE TEST: Capacitors shall be capable of
withstanding 1000 hours at 55°C with an ambient
humidity of 90-95% RH with rated DC voltage applied.
After the capacitors have stabilized for a period of 24
hours at 25°C, they shall meet the following limits:
DCL shall not exceed 5 times the initial limit.
Capacitance shall be within ±10% of the initial value.
DF shall not exceed 2 times the initial limit.
• FLAMMABILITY — The encapsulant for Molded and
Conformal Coated Product meets or exceeds the fol-
lowing requirements:
Underwriters Lab. UL 94V-0
Oxygen Index per ASTM-D-2863
28% min.
• STABILITY AT LOW AND HIGH TEMPERATURE
-55°C to 125°C: Capacitors will be capable of
• THERMAL SHOCK—MIL-STD-202, Method 107:
Capacitors shall be subjected to thermal shock in accor-
dance with MIL-STD-202, Method 107, Test Condition A.
M39003 Components tested to MIL-STD-202, Method
107, Condition B. Measurements before and after
withstanding extreme temperature testing at
a
succession of continuous steps at +25°C, -55°C, +25°C,
+85°C, +125°C, +25°C, in the order stated. Capacitors
shall be brought to thermal stability at each test
KEMET Electronics Corporation, P.O. Box 5928, Greenville, S.C. 29606 (864) 963-6300
81
KEMET [ KEMET CORPORATION ]
