WIMA Snubber FKP

Snubber FKP Capacitors for High Pulse Applications with Metal Foil Electrodes and Metallized Internal Series Connection.

Capacitances from 0.01 µF to 3.3 µF.
Rated Voltages from 630 VDC to 4000 VDC.

Special Features

High pulse duty
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: Aluminium foil and single-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 FKP capacitors

Electrical Data
Capacitance range: 0.01 µF to 3.3 µF
Rated voltages: 630VDC, 1000VDC, 1250VDC, 1600VDC, 2000VDC, 3000VDC, 4000VDC
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 > 3000VDC
< 41.5
41.5
56 1.6 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 < 5 x 10-4
< 6 x 10-4
< 10 x 10-4 < 5 x 10-4
< 6 x 10-4
– < 5 x 10-4
–
–
Maximum pulse rise time:
Capacitance
µF max. pulse rise time V/µsec at TA < 40°C
630VDC 1000VDC 1250VDC 1600VDC 2000VDC 3000VDC 4000VDC
0.01…0.022
0.033…0.068
0.1…0.22
0.33…0.68
1.0…3.3 –
9000
9000
5000
1600 11000
9000
9000
5000
2000 11000
9000
9000
5000
2000 11000
9000
9000
5000
2000 11000
9000
9000
5000
– 11000
9000
9000
5000
– 11000
9000
9000
5000
–
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.