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Document Number: 28112
12 Revision: 07-Mar-14
This document is subject to change without notice.
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MKT470
Vishay BCcomponents
Metallized Polyester Film Capacitors
MKT Radial Potted Type
SUB-GROUP C1B PART OF SAMPLE
OF SUB-GROUP C1
4.9 Shock Mounting:
See section “Mounting” of this specification
Pulse shape: Half sine
Acceleration: 490 m/s²
Duration of pulse: 11 ms
4.9.3 Final measurements Visual examination No visible damage
Capacitance C/C| 5 % for w = 2.5 mm or
C/C| 3 % for w > 2.5 mm of the value
measured in 4.6.1
Tangent of loss angle Increase of tan :
0.005 for: C 10 nF or
0.003 for: 10 nF < C 470 nF or
0.002 for: C > 470 nF
Compared to values measured in 4.6.1
Insulation resistance As specified in section “Insulation Resistance”
of this specification
SUB-GROUP C1 COMBINED SAMPLE
OF SPECIMENS OF SUB-GROUPS
C1A AND C1B
4.10 Climatic sequence
4.10.2 Dry heat Temperature: + 125 °C
Duration: 16 h
4.10.3 Damp heat cyclic
Test Db, first cycle
4.10.4 Cold Temperature: - 55 °C
Duration: 2 h
4.10.6 Damp heat cyclic
Test Db, remaining cycles
4.10.6.2 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
4.4.2 or 4.9.3
Tangent of loss angle Increase of tan :
0.008 for: C 10 nF or
0.005 for: 10 nF < C 470 nF or
0.003 for: C > 470 nF
Compared to values measured in
4.3.1 or 4.6.1
Insulation resistance 50 % of values specified in section
“Insulation Resistance” of this specification
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 for: C 470 nF or
0.003 for: C > 470 nF
Compared to values measured in 4.11.1
Insulation resistance 50 % of values specified in section
“Insulation Resistance” of this specification
SUB-CLAUSE NUMBER AND TEST CONDITIONS PERFORMANCE REQUIREMENTS