WIMA Snubber MKP

Snubber MKP Capacitors for Pulse Applications with Double-Sided Metallized Electrodes and Internal Series Connection.

Capacitances from 0.047 µF to 8.0 µF.
Rated Voltages from 700 VDC to 3000 VDC.

Special Features

Pulse duty construction
Self-healing
Particularly reliable contact configurations: 4-pin versions and screwable plate connections
Internal series connection
Very low dissipation factor
Negative capacitance change versus temperature
AEC-Q200 qualified
According to RoHS 2015/863/EU

Typical Applications
For high pulse and high frequency applications requiring extremely reliable contacts e.g.

IGBT-applications

Construction

Dielectric: Polypropylene (PP) film
Capacitor electrodes: Double-sided metallized plastic film
Encapsulation: Solvent-resistant, flame-retardent plastic case with epoxy resin seal, UL 94 V-0
Terminations: Tinned wire or plates
Marking: Colour: Red. Marking: Black.

Internal construction:

Construction WIMA Snubber MKP capacitors

Electrical Data
Capacitance range: 0.047 µF to 8 µF
Rated voltages: 700VDC, 850VDC, 1000VDC, 1250VDC, 1700VDC, 2000VDC, 2500VDC, 3000VDC
Capacitance tolerances: ±20%, ±10%, ±5% (other tolerances are available subject to special enquiry)
Operating temperature range: -55°C to +105°C
Climatic test category: 55/100/56 in accordance with IEC
Insulation resistance at +20°C:
C < 0.33 µF: > 1 x 105 MΩ
C > 0.33 µF: > 30000 sec (MΩ x µF)
Measuring voltage: 100V/1 min.
Test voltage: 2 sec
L < 2000VDC 2500VDC > 3000VDC
< 41.5
41.5
56 1.6 Ur
1.4 Ur
1.2 Ur 1.4 Ur
1.4 Ur
1.2 Ur 1.2 Ur
1.2 Ur
1.2 Ur
Voltage derating: A voltage derating factor of 1.35% per K must be applied from +85°C for DC voltages and from +75°C for AC voltages.
Reliability: Operational life > 300000 hours. Failure rate < 1 fit (0.5 x Ur and 40°C)
Specific dissipation:
Box size*
W x H x L in mm Specific dissipation in Watts per K above the ambient temperature
19x31x56
23x34x56
27×37.5×56
33x48x56
37x54x56 0.068
0.079
0.092
0.122
0.142
* For other box sizes please refer to Selection of Capacitors for Pulse Applications
Dissipation factors at +20°C: tanδ
at f C < 0.1 µF 0.1 µF < C < 1.0 µF C > 1.0 µF
1kHz
10kHz
100kHz < 6 x 10-4
< 6 x 10-4
< 15 x 10-4 < 6 x 10-4
< 6 x 10-4
– < 6 x 10-4
–
–
Maximum pulse rise time:
Capacitance
µF max. pulse rise time V/µsec at TA < 40°C
700VDC 850VDC 1000VDC 1250VDC 1700VDC 2000VDC 2500VDC 3000VDC
0.047…0.22
0.33…0.68
1.0…2.2
2.5…6.8
7.0…8.0 1150
900
500
190
90 1150
900
500
190
90 1800
1150
500
390
– 1800
1150
500
390
– 1800
1150
650
500
– 1800
1150
650
–
– 1800
1150
650
–
– 1800
1150
650
–
–
Mounting Recommendation
Excessive mechanical strain, e.g. pressure or shock onto the capacitor body, is to be avoided during mounting and usage of the capacitors. When fixing the plates the screw torque is to be limited to max. 5Nm.
Packing
Transportation-safe packing in cardboard boxes. Packing quantities may vary depending on the plate version.