ALUMINUM ORGANIC CAPACITORS
Performance Characteristics
16. Moisture Sensitivity Level (MSL)
• J-Std-020
ENVIRONMENTAL
a. Capacitance: within 30% of initial value
b. DF: within initial limit
c. DC Leakage: within initial limit
d. ESR: within 2 x initial limit
Meets MSL 3 requirements for SnPb assembly.
11. Temperature Stability
Mounted capacitors withstand extreme temperature
testing at a succession or continuous steps at
+25°C, -55°C, +25°C, +85°C, +125°C, +25°C in that
order. Capacitors are allowed to stabilize at each
temperature before measurement. Cap, DF, and
DCL are measured at each temperature; except DC
Leakage is not measured at -55°C.
17. Load Humidity
• 85°C, 85ꢀ RH, Rated Voltage, 500 Hours
a. Capacitance: within +30/-5% of initial value
b. DF: within initial limit
∆Cap
Step Temp
DCL
DF
Specified
Tolerance
Catalog
Limit
Catalog
Limit
c. DC Leakage: within 5 x initial limit
d. ESR: within 2 x initial limit
1
2
3
4
5
6
25°C
-55°C
15% of
initial value
Catalog
Limit
N/A
18. ESD
• Polymer Aluminum capacitors are not sensi-
tive to Electro-Static Discharge (ESD).
5% of
initial value
Catalog
Limit
Catalog
Limit
+25°C
+85°C
+125°C
+25°C
15% of
initial value
2X Catalog
Limit
Catalog
Limit
19. Failure Mechanism and Reliability
20% of
initial value
2X Catalog
Limit
Catalog
Limit
The normal failure mechanism is dielectric break
down. Dielectric failure can result in high DC
Leakage current and may proceed to the level of a
short circuit. With sufficient time to charge, healing
may occur by one of two potential mechanisms. The
polymer adjacent to the dielectric fault site may over-
heat and vaporize, disconnecting the fault site from
the circuit. The polymer may also oxidize into a more
resistive material that caps the defect site in the
dielectric and reduces the flow of current.
5% of
initial value
Catalog
Limit
Catalog
Limit
Table 4 - Acceptable limits are as follows:
12. Standard Life Test
• 85°C, Rated Voltage, 2000 Hours
Post Test Performance:
a. Capacitance: within 10% of initial value
b. DF: within initial limit
Capacitor failure may be induced by exceeding the
rated conditions of forward DC voltage, reverse DC
voltage, surge current, power dissipation or tempera-
ture. Excessive environmental stress, such as pro-
longed or high temperature reflow processes may
also trigger dielectric failure.
c. DC Leakage: within initial limit
d. ESR: within initial limit
13. High Temperature Life Test
• 125°C, Rated Voltage, 2000 Hours
Post Test Performance:
a. Capacitance: within 10% of initial value
b. DF: within initial limit
c. DC Leakage: within 1.25 x initial limit
d. ESR: within 2 x initial limit
20. Resistance to Solvents
• Mil-Std 202, Method 215
Post Test Performance:
a. Capacitance: within 10% of initial value
b. DF: within initial limit
c. DC Leakage: within initial limit
d. ESR: within initial limit
14. Storage Life Test
• 125°C, O VDC, 2000 Hours
Post Test Performance:
e.Physical: no degradation of case, terminals or
marking
a. Capacitance: within 10% of initial value
b. DF: within initial limit
c. DC Leakage: within 1.25 x initial limit
d. ESR: within 2 x initial limit
21. Fungus
• Mil-Std-810, Method 508
15. Thermal Shock
22. Flammability
• UL94 VO Classification
• Mil-Std-202, Method 107, Condition B
Minimum temperature is -55°C
Maximum temperature is +125°C
Post Test Performance:
a. Capacitance: within 10% of initial value
b. DF: within initial limit
c. DC Leakage: within initial limit
d. ESR: within 2 x initial limit
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