MKT467, MKT468
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Vishay BCcomponents
Revision: 27-Mar-18
20
Document Number: 28105
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SUB-GROUP C2
4.11 Damp heat steady state 56 days, 40 °C, 90 % to 95 % RH
4.11.1 Initial measurements Capacitance
Tangent of loss angle at 1 kHz
4.11.3 Final measurements Voltage proof = U
RDC
for 1 min within 15 min
after removal from test chamber
No breakdown or flash-over
Visual examination No visible damage
Legible marking
Capacitance |C/C| 5 % of the value measured in 4.11.1.
Tangent of loss angle Increase of tan 0.005
Compared to values measured in 4.11.1
Insulation resistance
50 % of values specified in section
“Insulation Resistance” of this specification
SUB-GROUP C3
4.12 Endurance Duration: 2000 h
1.25 x U
RDC
at 85 °C
1.0 x U
RDC
at 105 °C
4.12.1 Initial measurements Capacitance
Tangent of loss angle:
for C 470 nF at 100 kHz or
for C > 470 nF at 10 kHz
4.12.5 Final measurements Visual examination No visible damage
Legible marking
Capacitance |C/C| 5 % compared to values measured
in 4.12.1
Tangent of loss angle Increase of tan
0.005 for: C 100 nF or
0.010 for: 100 nF < C 220 nF or
0.015 for: 220 nF < C 470 nF and
0.003 for: C > 470 nF
Compared to values measured in 4.12.1
Insulation resistance
50 % of values specified in section
“Insulation Resistance” of this specification
SUB-GROUP C4
4.13 Charge and discharge 10 000 cycles
Charged to U
RDC
Discharge resistance:
4.13.1 Initial measurements Capacitance
Tangent of loss angle:
for C 470 nF at 100 kHz or
for C > 470 nF at 10 kHz
4.13.3 Final measurements Capacitance |C/C| 3 % compared to values measured
in 4.13.1
Tangent of loss angle Increase of tan
0.005 for: C 100 nF or
0.010 for: 100 nF < C 220 nF or
0.015 for: 220 nF < C 470 nF and
0.003 for: C > 470 nF
Compared to values measured in 4.13.1
Insulation resistance
50 % of values specified in section
“Insulation Resistance” of this specification
GROUP C INSPECTION REQUIREMENTS
SUB-CLAUSE NUMBER AND TEST CONDITIONS PERFORMANCE REQUIREMENTS
R
U
R
C x 2.5 x dU/dt
R
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