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Overview

  

Snubber MKP

  

Snubber FKP

  

PDF-File

  
  
WIMA Snubber MKP Page 2
 
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-pin versions and screwable plate

connections
Internal series connection from 400VAC
Very low dissipation factor
Negative capacitance change

versus temperature
According to RoHS 2011/65/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
Internal construction:
Construction WIMA Snubber MKP
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: 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
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 TA < 40°C
250VDC 400VDC 630VDC 1000VDC 1600VDC 2000VDC 3000VDC
0.047...0.22
0.33...0.68
1.0...2.2
2.5...6.8
7.0...10
15...25		 650
370
250
100
65
45		 650
500
250
130
90
65		 1150
900
500
190
90
-		 1800
1150
500
390
-
-		 1800
1150
650
500
-
-		 1800
1150
650
-
-
-		 1800
1150
650
-
-
-
 
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.

 

 

Example for ordering / Part number:

  

Transportation-safe packing in cardboard boxes.

Packing quantities may vary depending on the plate version.
 

 

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