WIMA Snubber MKP Capacitors

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SMD Capacitors

Capacitors in PCM 2.5 mm

Capacitors in PCM 5 mm

Film/Foil Capacitors in PCM 7.5 - 15 mm

Metallized Capacitors in PCM 7.5 - 37.5 mm

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

Special Features

Pulse duty construction
Self-healing
Particularly reliable contact

configurations: 4-lead versions

and screwable plate connections
Internal series connection

from 400VAC
Very low dissipation factor
Negative capacitance change

versus temperature
According to RoHS 2002/95/EC

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
Internal construction:

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. Epoxy resin seal: Red

Electrical Data

Capacitance range:
0.047 µF to 25 µF
Rated voltages:
250VDC, 400VDC, 630VDC, 1000VDC, 1600VDC, 2000VDC, 3000VDC
Capacitance tolerances:
±20%, ±10%, ±5% (other tolerances are available subject to special enquiry)
Operating temperature range:
-55°C to +100°C
Climatic test category:
55/100/56 in accordance with IEC
Insulation resistance at +20°C:
C < 0.33 µF: > 1 x 10⁵ M
(mean value: 5 x 10⁵ M)
C > 0.33 µF: > 30000 sec (MxµF)
(mean value: 100000 sec)
Measuring voltage: 100V/1 min.

Test voltage:
L < 41.5: 1.6 Ur, 2 sec
L = 41.5: 1.4 Ur, 2 sec
L = 56 : 1.2 Ur, 2 sec
Dissipation factors at +20°C: tan

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 27x37.5x56 33x48x56 37x54x56	0.068 0.079 0.092 0.122 0.142

* other box sizes

Graphs:

Versions:

at f	C < 0.1 µF	0.1 µF < C < 1.0 µF	C > 1.0 µF
1kHz 10kHz 100kHz	< 3 x 10^-4 < 4 x 10^-4 < 15 x 10^-4	< 3 x 10^-4 < 6 x 10^-4 -	< 3 x 10^-4 - -

Maximum pulse rise time: for pulses equal to the rated voltage

Capacitance µF	max. pulse rise time V/µsec at T_A < 40°C
Capacitance µF	250VDC	400VDC	630VDC	1000VDC	1600VDC	2000VDC	3000VDC
0.047...0.22 0.33...0.68 1.0...2.2 2.5...6.0 7.2...10 15...25	500 300 200 80 50 10	500 400 200 100 70 20	900 700 400 150 75 -	1400 900 400 300 - -	1400 900 500 400 - -	1400 900 500 - - -	1400 900 500 - - -

Mounting Recommendation

Packing

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.

Transportation-safe packing in cardboard boxes.

Example for ordering / Part number:

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