ZWS, ZWS E, ZWS Ni

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Vishay Draloric

Revision: 19-Jul-16

1

Document Number: 21010

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

Cemented Wirewound Resistors with Lugs

The ZWS series, with a completely welded construction, is

the perfect choice for high continuous power dissipation up

to 250 W with the option for adjustable (ZWS E) and

non-inductive (ZWS Ni) types. With their extremely high

pulse power capability, they are the ideal choice as inrush

current limiters. Typical applications include but are not

limited to drive systems, power supplies, frequency

inverters, AC and DC filters, and as snubber resistors. For a

given application, requirements of ohmic value, rated

power,

peak

voltage,

pulse

shape,

pulse

duration,

termination style, and environmental conditions may be

submitted to recommend the most suitable product.

FEATURES

• Lugs with various termination styles suitable for

soldering or bolt connection

• Excellent pulse load capability

• Adjustable type (E) available

• Non inductive type (Ni) available

• Non-flammable coating according to UL94-V0

• Material categorization: for definitions of compliance

APPLICATIONS

• Inrush current limiter

• Capacitor charge / discharge

• Snubber resistor

• Brake resistor

• Filter resistor

TECHNICAL SPECIFICATION

TYPE /

VARIANT

RATED

DISSIPATION

TCR

-10 ppm/K to -80 ppm/K

WM50

TCR

+100 ppm/K to +180 ppm/K

WM110

RESISTANCE

TOLERANCE

OPERATING

ZWS 6

6 W

0.82

 to 5.1 k

1.8

 to 13 k

± 5 %, ± 10 %

250 V

2.7

 to 5.1 k

-

± 2 %

150 V

ZWS 6 E

6 W

0.82

 to 130 

1.8

 to 4.7 k

± 5 %, ± 10 %

150 V

ZWS 6 Ni

6 W

0.15

 to 910 

0.33

 to 2.4 k

± 10 %

100 V

1.0

 to 910 

2.0

 to 2.4 k

± 5 %

ZWS 8

8 W

0.68

 to 7.5 k

1.8

 to 20 k

± 5 %, ± 10 %

400 V

3.3

 to 7.5 k

-

± 2 %

200 V

ZWS 8 E

8 W

0.62

 to 200 

1.8

 to 6.8 k

± 5 %, ± 10 %

200 V

ZWS 8 Ni

8 W

0.24

 to 1.3 k

0.56

 to 3.6 k

± 10 %

150 V

1.0

 to 1.3 k

2.0

 to 3.6 k

± 5 %

ZWS 12

12 W

0.62

 to 10 k

1.8

 to 27 k

± 5 %, ± 10 %

550 V

3.0

 to 10 k

-

± 2 %

300 V

ZWS 12 E

12 W

0.56

 to 270 

1.8

 to 9.1 k

± 5 %, ± 10 %

300 V

ZWS 12 Ni

12 W

0.33

 to 1.8 k

0.75

 to 5.1 k

± 10 %

200 V

1.0

 to 1.8 k

2.0

 to 5.1 k

± 5 %

ZWS 15

15 W

0.68

 to 12 k

2.2

 to 33 k

± 5 %, ± 10 %

700 V

2.2

 to 12 k

-

± 2 %

400 V

ZWS 15 E

15 W

0.68

 to 330 

2.2

 to 11 k

± 5 %, ± 10 %

400 V

ZWS 15 Ni

15 W

0.39

 to 2.2 k

0.82

 to 6.2 k

± 10 %

300 V

1.0

 to 2.2 k

2.0

 to 6.2 k

± 5 %