Document Number: 28155 For technical questions, contact: RFI@vishay.com
www.vishay.com
Revision: 22-Dec-10 13
MKT334
Series Impedance Film Capacitors
Radial Potted Type
Vishay BCcomponents
SUB-CLAUSE NUMBER AND
TEST
CONDITIONS PERFORMANCE REQUIREMENTS
4.6.1 Inspection Visual examination No visible damage
4.7 Vibration Mounting: see section “Mounting” of this
specification
Procedure B4
Frequency range: 10 Hz to 55 Hz
Amplitude: 0.75 mm or
Acceleration 98 m/s²
(whichever is less severe)
Total duration 6 h
4.7.2 Final inspection Visual examination No visible damage
4.9 Shock Mounting: see section “Mounting” for more
information
Pulse shape: half sine
Acceleration: 490 m/s²
Duration of pulse: 11 ms
4.9.2 Final measurements Visual examination
Capacitance
Tangent of loss angle
Insulation resistance
No visible damage
¦ΔC/C¦ ≤ 5 % of the value measured initially.
Increase of tan δ:
≤ 0.008 for: C ≤ 1 µF or
≤ 0.005 for: C > 1 µF
Compared to values measured initially
As specified in section “Specific Reference Data”
of this specification
SUB-GROUP C1
COMBINED SAMPLE OF
SPECIMENS OF SUB-GROUPS
C1A AND C1B
4.11 Climatic sequence
4.11.1 Initial measurements Capacitance
Measured in 4.4.2 and 4.9.2
Tangent of loss angle:
Measured initially in C1A and C1B
4.11.2 Dry heat Temperature: 105 °C
Duration: 16 h
4.11.3 Damp heat cyclic
Test Db
First cycle
4.11.4 Cold Temperature: - 55 °C
Duration: 2 h
4.11.5 Damp heat cyclic
Test Db
remaining cycles
4.11.6 Final measurements Visual examination
Capacitance
No visible damage
Legible marking
¦ΔC/C¦ ≤ 5 % of the value measured in 4.11.1.
Tangent of loss angle Increase of tan δ:
≤ 0.008 for: C ≤ 1 µF or
≤ 0.005 for: C > 1 µF
Compared to values measured in 4.11.1.
Voltage proof
720 V
DC
, 1 min between terminations
Insulation resistance
No permanent breakdown or flash-over
≥ 50 % of values specified in section “Specific
Reference Data” of this specification
