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MKP385
Vishay BCcomponents
GROUP C INSPECTION REQUIREMENTS
SUB-CLAUSE NUMBER AND TEST
CONDITIONS
SUB-GROUP C2
4.11 Damp heat steady state
56 days; 40 °C; 90 % to 95 % RH
no load
PERFORMANCE REQUIREMENTS
4.11.1 Initial measurements
Capacitance
Tangent of loss angle at 1 kHz
4.11.3 Final measurements
Voltage proof = URDC for 1 min within
No breakdown or flashover
15 min after removal from test chamber
Visual examination
No visible damage
Legible marking
Capacitance
lC/Cl 2 % of the value measured in
4.11.1.
Tangent of loss angle
Increase of tan
0.0005 for: C 100 nF at 100 kHz
0.0010 for: 100 nF < C 470 nF at 100 kHz
0.0015 for: 470 nF < C 1 μF at 100 kHz
0.0015 for: 1 μF < C 10 μF at 10 kHz
0.0015 for: C >10 μF at 1 kHz
Compared to values measured in 4.11.1.
SUB-GROUP C3A
4.12.1 Endurance
4.12.1.1 Initial measurements
Insulation resistance
Duration: 2000 h
Temperature: 85 °C
Voltage: 1.25 x URAC VRMS, 50 Hz or
Duration: 2000 h
Temperature: 110 °C
Voltage: 0.875 x URAC VRMS, 50 Hz
Capacitance
Tangent of loss angle
C 1 μF at 100 kHz
1 μF < C 10 μF at 10 kHz
C > 10 μF at 1 kHz
50 % of values specified in section
“Insulation resistance” of this specification
4.12.1.3 Final measurements
Visual examination
No visible damage
Legible marking
Capacitance
lC/Cl 5 % for C > 10 nF
lC/Cl 8 % for C 10 nF
Compared to values measured in 4.12.1.1
Tangent of loss angle
Increase of tan :
0.0005 for: C 100 nF at 100 kHz
0.0010 for: 100 nF < C 470 nF at 100 kHz
0.0015 for: 470 nF < C 1 μF at 100 kHz
0.0015 for 1 μF < C 10 μF at 10 kHz
0.0015 for: C > 10 μF at 1 kHz
Compared to values measured in 4.12.1.1
Insulation resistance
50 % of values specified in section
“Insulation resistance” of this specification.
Revision: 03-Jun-15
15
Document Number: 28174
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