MKP1839
Vishay Roederstein
www.vishay.com
GROUP C INSPECTION REQUIREMENTS
SUB-CLAUSE NUMBER AND TEST
SUB-GROUP C3
CONDITIONS
PERFORMANCE REQUIREMENTS
4.12 Endurance DC
Duration: 2000 h
1.2ꢀ x URDC at 8ꢀ °C
0.87ꢀ x URDC at 100 °C
4.12.1 Initial measurements
Capacitance
Tangent of loss angle:
For C 1 μF at 10 kHz
For C > 1 μF at 1 kHz
4.12.ꢀ Final measurements
Visual examination
Capacitance
No visible damage
Legible marking
|C/C| 3 % compared to values measured
in 4.12.1
Tangent of loss angle
Insulation resistance
Increase of tan 0.002
Compared to values measured in 4.12.1
ꢀ0 % of values specified in section
“Insulation Resistance” of this specification
SUB-GROUP C4
4.2.6 Temperature characteristics
Initial measurement
Intermediate
Capacitance
For - ꢀꢀ °C to + 20 °C:
Intermediate measurements
Capacitance at lower category temperature 0 % |C/C| 2 % or
Capacitance at 20 °C
for 20 °C to 8ꢀ °C:
Capacitance at upper category temperature - 3 % |C/C| 0 %
Final measurements
Capacitance
As specified in section “Capacitance” of this
specification
Tangent of loss angle:
For C 1 μF at 10 kHz
For C > 1 μF at 1 kHz
Insulation resistance
As specified in section “Insulation
Resistance” of this specification
4.13 Charge and discharge
10 000 cycles
Charged to URDC
Discharge resistance:
URDC
-----------------------------------------
R =
2.ꢀ x CdU/dt
4.13.1 Initial measurements
4.13.3 Final measurements
Capacitance
Tangent of loss angle at 100 kHz
Capacitance
|C/C| 3 % of the value measured in 4.13.1
Tangent of loss angle
Increase of tan 0.003
Compared to values measured in 4.13.1
Insulation resistance
ꢀ0 % of values specified in section
“Insulation Resistance” of this specification
Revision: 10-Dec-13
Document Number: 26022
11
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