MKP1839
Vishay Roederstein
www.vishay.com
GROUP C INSPECTION REQUIREMENTS
SUB-CLAUSE NUMBER AND TEST
CONDITIONS
PERFORMANCE REQUIREMENTS
SUB-GROUP C1B OTHER PART OF
SAMPLE OF SUB-GROUP C1
4.9
Shock
Mounting:
See section “Mounting” for more information
Pulse shape: Half sine
Acceleration: 490 m/sꢁ
Duration of pulse: 11 ms
4.9.3
Final measurements
Visual examination
Capacitance
No visible damage
|C/C| 2 % of the value measured in 4.6.1
Tangent of loss angle
Increase of tan 0.002
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: Upper category temperature
Duration: 16 h
4.10.3 Damp heat cyclic
Test Db, first cycle
4.10.4 Cold
Temperature: Lower category temperature
Duration: 2 h
4.10.6 Damp heat cyclic
Visual examination
Capacitance
No visible damage
Legible marking
Test Db, remaining cycles
4.10.6.2 Final measurements
|C/C| 3 % of the value measured in
4.4.2 or 4.9.3
Tangent of loss angle
Increase of tan 0.003
Compared to values measured in
4.3.1 or 4.6.1
Insulation resistance
ꢀ0 % of values specified in section
“Insulation Resistance” of this specification
SUB-GROUP C2
4.11
Damp heat steady state
Capacitance
4.11.1 Initial measurements
4.11.3 Final measurements
Tangent of loss angle at 1 kHz
Visual examination
No visible damage
Legible marking
Capacitance
|C/C| 3 % of the value measured in 4.11.1.
Tangent of loss angle
Increase of tan 0.001
Compared to values measured in 4.11.1
ꢀ0 % of values specified in section
“Insulation Resistance” of this specification
Insulation resistance
Revision: 10-Dec-13
Document Number: 26022
10
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