ZWS, ZWS E, ZWS Ni
www.vishay.com
Vishay Draloric
Cemented Wirewound Resistors with Lugs
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
please see www.vishay.com/doc?99912
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.
APPLICATIONS
• Inrush current limiter
• Capacitor charge / discharge
• Snubber resistor
• Brake resistor
• Filter resistor
TECHNICAL SPECIFICATION
RESISTANCE RANGE (1)
TCR
-10 ppm/K to -80 ppm/K
WM50
RESISTANCE RANGE (1)
OPERATING
RATED
TYPE /
VARIANT
TCR
+100 ppm/K to +180 ppm/K
WM110
RESISTANCE
TOLERANCE
DISSIPATION
VOLTAGE (2)
P40
Umax.
0.82 to 5.1 k
2.7 to 5.1 k
0.82 to 130
0.15 to 910
1.0 to 910
0.68 to 7.5 k
3.3 to 7.5 k
0.62 to 200
0.24 to 1.3 k
1.0 to 1.3 k
0.62 to 10 k
3.0 to 10 k
0.56 to 270
0.33 to 1.8 k
1.0 to 1.8 k
0.68 to 12 k
2.2 to 12 k
0.68 to 330
0.39 to 2.2 k
1.0 to 2.2 k
1.8 to 13 k
-
5 ꢀ, 10 ꢀ
2 ꢀ
250 V
150 V
150 V
ZWS 6
6 W
6 W
6 W
ZWS 6 E
ZWS 6 Ni
1.8 to 4.7 k
0.33 to 2.4 k
2.0 to 2.4 k
1.8 to 20 k
-
5 ꢀ, 10 ꢀ
10 ꢀ
100 V
5 ꢀ
5 ꢀ, 10 ꢀ
2 ꢀ
400 V
200 V
200 V
ZWS 8
8 W
8 W
8 W
ZWS 8 E
ZWS 8 Ni
1.8 to 6.8 k
0.56 to 3.6 k
2.0 to 3.6 k
1.8 to 27 k
-
5 ꢀ, 10 ꢀ
10 ꢀ
150 V
5 ꢀ
5 ꢀ, 10 ꢀ
2 ꢀ
550 V
300 V
300 V
ZWS 12
12 W
12 W
12 W
ZWS 12 E
ZWS 12 Ni
1.8 to 9.1 k
0.75 to 5.1 k
2.0 to 5.1 k
2.2 to 33 k
-
5 ꢀ, 10 ꢀ
10 ꢀ
200 V
5 ꢀ
5 ꢀ, 10 ꢀ
2 ꢀ
700 V
400 V
400 V
ZWS 15
15 W
15 W
15 W
ZWS 15 E
ZWS 15 Ni
2.2 to 11 k
0.82 to 6.2 k
2.0 to 6.2 k
5 ꢀ, 10 ꢀ
10 ꢀ
300 V
5 ꢀ
Revision: 19-Jul-16
Document Number: 21010
1
For technical questions, contact: ww1resistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000