SKW

301  WEST  O  STREET  

•

  OGALLALA, NE  69153

Phone:  (308) 284-3611 

e-mail:  sales@ascapacitor.com

Fax:  (308) 284-8324  

web:  www.ascapacitor.com

250VAC

CAP

(MFD)

T

± 0.039"

(± 1.0mm)

H

± 0.039"

(± 1.0mm)

L

± 0.039"

(± 1.0mm)

LS

± 0.059"

(± 1.5mm)

0.010

0.236"

(6.0mm)

0.472"

(12.0mm)

0.709"

(18.0mm)

0.571"

(14.5mm)

0.033

0.295"

(7.5mm)

0.531"

(13.5mm)

0.709"

(18.0mm)

0.571"

(14.5mm)

0.10

0.354"

(9.0mm)

0.630"

(16.0mm)

0.827"

(21.0mm)

0.886"

(17.5mm)

0.20

0.394"

(10.0mm)

0.748"

(19.0mm)

1.043"

(26.5mm)

0.886"

(22.5mm)

APPLICATIONS: 

 SPECIFICALLY DESIGNED FOR APPLICATIONS IN HIGH FREQUENCY SWITCHING POWER

SUPPLIES, THE SKW FAMILY PROVIDES CRITICAL DAMPING AND REVERSE VOLTAGE PROTECTION FOR THE
SCHOTTKY DIODE.  THE LEAKAGE INDUCTANCE OF THE HIGH FREQUENCY POWER TRANSFORMER CAUSES
RINGING OF THE REVERSE VOLTAGE WHEN DIODE CONDUCTION ABRUPTLY CEASES.  THIS CAN CAUSE
SCHOTTKY DIODE FAILURE.  FIGURE 1 SHOWS A SNUBBER USED ACROSS EACH DIODE.  FIGURE 2 ILLUSTRATES
THE VOLTAGE WAVE FORMS BEFORE AND AFTER THE SKW SNUBBER WERE ADDED.  PLEASE CONTACT THE
FACTORY FOR AVAILABILITY OF OTHER VALUES, VOLTAGES, WATTAGES, AND/OR DIELECTRIC MATERIALS.

ASC

SKV

ASC

SKV

FIGURE 1:  SNUBBER CIRCUIT

NO SNUBBER

WITH SNUBBER

10V / DIVISION

FIGURE 2:  WAVEFORM WITH AND WITHOUT SNUBBER

PAGE 1 OF 2

METALLIZED POLYESTER RC NETWORK
PREFORMED CASE

SKW

301  WEST  O  STREET  

•

  OGALLALA, NE  69153

Phone:  (308) 284-3611 

e-mail:  sales@ascapacitor.com

Fax:  (308) 284-8324  

web:  www.ascapacitor.com

GENERAL SPECIFICATIONS

PHYSICAL CHARACTERISTICS

CONSTRUCTION: 

 NON-INDUCTIVE WOUND PLASTIC FILM RC NETWORK.

CASE:

  FLAME RETARDANT PREFORMED CASE WITH EPOXY FILL.

LEAD MATERIAL:

  20 AWG SOLDER COATED OR TINNED SOLID WIRE.

DIMENSIONS: 

 AS SPECIFIED IN TABLES.

ELECTRICAL CHARACTERISTICS

CAPACITANCE:

  AS SPECIFIED IN TABLES ± 20% WHEN MEASURED AT OR REFERRED TO 1000 ± 20 HZ

AND 25 ± 5 °C.

RESISTOR:

  47

Ω

 AND 120

Ω

 ± 20% AVAILABLE.

RATED VOLTAGE:

  250VAC.

TEMPERATURE:

  -40 °C TO +100 °C AT FULL RATED VOLTAGE.

ADDITIONAL INFORMATION

ORDERING INFORMATION:

  ALL ASC CAPACITORS ARE ORDERED BY “FAMILY-CAP-TOL-VOLT”

DESIGNATION.   SINCE DIFFERENT VALUES OF RESISTORS ARE AVAILABLE PLEASE SPECFY
RESISTANCE VALUE IN PARENTHESIS AFTER THE FAMILY. (I.E.TO ORDER AN SKW 0.1µF, 47 OHM, 20%,
250VAC NETWORK, REQUEST PART NUMBER "SKW(47) .1-20-250")

AGENCY APPROVALS:

RECOGNIZED BY THE FOLLOWING AGENCIES:

UL FILE NUMBER E59874
CSA FILE NUMBER LR62199-0
VDE FILE NUMBER 11181-4670-0007

WARNING:

  INFORMATION ON THIS FILE IS SUBJECT TO CHANGE WITHOUT NOTICE AT ASC'S

DISCRETION.

LAST MODIFIED:  12/29/03

PAGE 2 OF 2

PLASTIC FILM RC NETWORK
PREFORMED CASE