ZWK, ZWK Ni
www.vishay.com
Vishay Draloric
Cemented Wirewound Resistors with Ferrules
FEATURES
• Excellent pulse load capability
• High operating voltage up to 7350 V
• Non inductive type (Ni) available
• Different caps options:
- GDK style with different inner threads
- GZK made from drawn brass, nickel plated
• Easy to change when mounted with spring clips
The ZWK series, with completely welded construction, is the
• Non-flammable according to UL 94-V0
perfect choice for high continuous power dissipation up to
150 W with the option for a non-inductive type (ZWK Ni).
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. Specific application requirements
(ohmic value, rated power, peak voltage, pulse shape, pulse
duration, termination style, and environmental conditions)
can be submitted to Vishay for a recommendation of the
most suitable product.
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
• Inrush current limiter
• Capacitor charge / discharge
• Snubber resistor
• Brake resistor
• Filter resistor
TECHNICAL SPECIFICATION
RESISTANCE RANGE (1)
RESISTANCE RANGE (1)
OPERATING
RATED
TYPE /
TCR
-10 ppm/K to -80 ppm/K
WM50
TCR
+100 ppm/K to +180 ppm/K
WM110
RESISTANCE
TOLERANCE
DISSIPATION
VOLTAGE
VARIANT
P40
Umax.
0.47 to 8.2 k
0.51 to 8.2 k
5.1 to 8.2 k
0.24 to 1.5 k
1.0 to 1.5 k
0.47 to 12 k
0.51 to 12 k
5.1 to 12 k
0.36 to 2.2 k
0.75 to 2.2 k
0.75 to 20 k
2.0 to 20 k
0.56 to 3.3 k
1.5 to 36 k
2.2 to 20 k
1.1 to 6.8 k
1.8 to 47 k
2.0 to 47 k
1.5 to 8.2 k
2.7 to 75 k
2.7 to 75 k
2.2 to 13 k
4.7 to 130 k
4.7 to 130 k
3.9 to 24 k
1.5 to 22 k
1.5 to 22 k
-
10 %
5 %
ZWK 10
10 W
10 W
15 W
15 W
2 %
0.56 to 3.9 k
1.0 to 3.9 k
1.1 to 33 k
1.2 to 33 k
-
10 %
ZWK 10 Ni
ZWK 15
5 %
10 %
5 %
2 %
0.82 to 5.6 k
1.0 to 5.6 k
1.6 to 51 k
-
10 %
ZWK 15 Ni
5 %
10 %, 5 %
2 %
ZWK 20
20 W
20 W
40 W
40 W
60 W
60 W
90 W
90 W
150 W
150 W
ZWK 20 Ni
ZWK 40
1.3 to 9.1 k
3.3 to 100 k
-
10 %, 5 %
10 %, 5 %
2 %
P x R
ZWK 40 Ni
ZWK 60
2.7 to 18 k
4.3 to 130 k
-
10 %, 5 %
10 %, 5 %
2 %
ZWK 60 Ni
ZWK 90
3.3 to 24 k
6.2 to 200 k
-
10 %, 5 %
10 %, 5 %
2 %
ZWK 90 Ni
ZWK 150
ZWK 150 Ni
5.1 to 36 k
11 to 360 k
-
10 %, 5 %
10 %, 5 %
2 %
9.1 to 62 k
10 %, 5 %
Notes
•
(1)
The operating temperature range for these resistors is from -55 °C up to 250 °C
Resistance values are to be selected for 10 % from the E12 series, and for 5 % and 2 % from the E24 series
Revision: 07-Feb-17
Document Number: 21012
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