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
TYPE /
VARIANT
RATED
DISSIPATION
P
40
6W
6W
6W
8W
8W
8W
12 W
12 W
12 W
15 W
15 W
15 W
RESISTANCE RANGE
(1)
TCR
-10 ppm/K to -80 ppm/K
WM50
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
RESISTANCE RANGE
(1)
TCR
+100 ppm/K to +180 ppm/K
WM110
1.8
to 13 k
-
1.8
to 4.7 k
0.33
to 2.4 k
2.0
to 2.4 k
1.8
to 20 k
-
1.8
to 6.8 k
0.56
to 3.6 k
2.0
to 3.6 k
1.8
to 27 k
-
1.8
to 9.1 k
0.75
to 5.1 k
2.0
to 5.1 k
2.2
to 33 k
-
2.2
to 11 k
0.82
to 6.2 k
2.0
to 6.2 k
RESISTANCE
TOLERANCE
± 5 %, ± 10 %
±2%
± 5 %, ± 10 %
± 10 %
±5%
± 5 %, ± 10 %
±2%
± 5 %, ± 10 %
± 10 %
±5%
± 5 %, ± 10 %
±2%
± 5 %, ± 10 %
± 10 %
±5%
± 5 %, ± 10 %
±2%
± 5 %, ± 10 %
± 10 %
±5%
OPERATING
VOLTAGE
(2)
U
max.
250 V
150 V
150 V
100 V
400 V
200 V
200 V
150 V
550 V
300 V
300 V
200 V
700 V
400 V
400 V
300 V
ZWS 6
ZWS 6 E
ZWS 6 Ni
ZWS 8
ZWS 8 E
ZWS 8 Ni
ZWS 12
ZWS 12 E
ZWS 12 Ni
ZWS 15
ZWS 15 E
ZWS 15 Ni
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
ZWS, ZWS E, ZWS Ni
www.vishay.com
Vishay Draloric
TECHNICAL SPECIFICATION
TYPE /
VARIANT
RATED
DISSIPATION
P
40
20 W
20 W
20 W
35 W
35 W
35 W
50 W
50 W
50 W
100 W
100 W
100 W
150 W
150 W
150 W
250 W
250 W
250 W
75 W
75 W
75 W
110 W
110 W
110 W
RESISTANCE RANGE
(1)
TCR
-10 ppm/K to -80 ppm/K
WM50
0.62
to 16 k
2.7
to 16 k
0.62
to 430
0.47
to 2.7 k
1.0
to 2.7 k
1.1
to 30 k
1.3
to 30 k
1.1
to 750 Ω
0.91
to 5.1 k
1.3
to 33 k
2.2
to 33 k
1.3
to 910 Ω
1.1
to 6.2 k
2.7
to 68 k
2.7
to 1.8 k
2.2
to 13 k
4.7
to 130 k
4.7
to 3.3 k
3.9
to 22 k
8.2
to 220 k
8.2
to 6.2 k
6.8
to 39 k
2.4
to 62 k
3.0
to 62 k
2.4
to 1.6 k
2.0
to 11 k
3.3
to 91 k
3.3
to 2.4 k
2.7
to 16 k
RESISTANCE RANGE
(1)
TCR
+100 ppm/K to +180 ppm/K
WM110
1.3
to 43 k
-
1.3
to 15 k
1.1
to 8.2 k
2.0
to 8.2 k
2.7
to 82 k
-
2.7
to 27 k
2.0
to 15 k
3.0
to 91 k
-
3.0
to 33 k
2.4
to 16 k
6.2
to 200 k
-
6.2
to 68 k
4.7
to 33 k
11.0
to 360 k
-
11.0
to 120 k
9.1
to 62 k
20.0
to 620 k
-
20.0
to 220 k
15.0
to 110 k
5.1
to 180 k
-
5.1
to 56 k
4.3
to 30 k
7.5
to 240 k
-
7.5
to 82 k
6.2
to 43 k
RESISTANCE
TOLERANCE
± 5 %, ± 10 %
±2%
± 5 %, ± 10 %
±10 %
±5%
± 5 %, ± 10 %
±2%
± 5 %, ± 10 %
± 5 %, ± 10 %
± 5 %, ± 10 %
±2%
± 5 %, ± 10 %
± 5 %, ± 10 %
± 5 %, ± 10 %
±2%
± 5 %, ± 10 %
± 5 %, ± 10 %
± 5 %, ± 10 %
±2%
± 5 %, ± 10 %
± 5 %, ± 10 %
± 5 %, ± 10 %
±2%
± 5 %, ± 10 %
± 5 %, ± 10 %
± 5 %, ± 10 %
±2%
± 5 %, ± 10 %
± 5 %, ± 10 %
± 5 %, ± 10 %
±2%
± 5 %, ± 10 %
± 5 %, ± 10 %
OPERATING
VOLTAGE
(2)
U
max.
900 V
550 V
500 V
400 V
1500 V
1000 V
950 V
700 V
2100 V
1250 V
1250 V
850 V
4450 V
2600 V
2600 V
1800 V
7300 V
4400 V
4200 V
3000 V
12400 V
7400 V
7400 V
5200 V
3650 V
2150 V
2000 V
1500 V
5100 V
3150 V
3000 V
2150 V
ZWS 20
ZWS 20 E
ZWS 20 Ni
ZWS 35
ZWS 35 E
ZWS 35 Ni
ZWS 50
ZWS 50 E
ZWS 50 Ni
ZWS 100
ZWS 100 E
ZWS 100 Ni
ZWS 150
ZWS 150 E
ZWS 150 Ni
ZWS 250
ZWS 250 E
ZWS 250 Ni
ZWS 30/100
ZWS 30/100 E
ZWS 30/100 Ni
ZWS 30/133
ZWS 30/133 E
ZWS 30/133 Ni
Notes
• The operating temperature range for these resistors is from -55 °C up to 250 °C.
(1)
Resistance values are to be selected for ± 10 % from the E12 series, and for ± 5 % and ± 2 % from the E24 series.
(2)
Depending on the resistance value, limited by
P
x
R
Revision: 19-Jul-16
Document Number: 21010
2
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
ZWS, ZWS E, ZWS Ni
www.vishay.com
Vishay Draloric
TERMINALS
SL
SS
SB
SSB
FST
e
e
e
e
b
e
TYPE / VARIANT
Lug for soldering
Screw terminal
Terminal with
2 screws, one for
electrical, and one for
mechanical
connection
Terminal with bolt
and 2 hexnuts
Fast on terminal with
6.3 mm x 0.8 mm
DIN 46244
ZWS 6
ZWS 6 E
ZWS 6 Ni
ZWS 8
ZWS 8 E
ZWS 8 Ni
ZWS 12
ZWS 12 E
ZWS 12 Ni
ZWS 15
ZWS 15 E
ZWS 15 Ni
ZWS 20
ZWS 20 E
ZWS 20 Ni
ZWS 35
ZWS 35 E
ZWS 35 Ni
ZWS 50
ZWS 50 E
ZWS 50 Ni
ZWS 100
ZWS 100 E
ZWS 100 Ni
ZWS 150
ZWS 150 E
ZWS 150 Ni
ZWS 250
ZWS 250 E
ZWS 250 Ni
ZWS 30/100
ZWS 30/100 E
ZWS 30/100 Ni
ZWS 30/133
ZWS 30/133 E
ZWS 30/133 Ni
e = 1.5 mm
-
-
-
-
e = 2.0 mm
e = M3 x 16
e = M3 x 16
e = 1.65 mm
b = 6.3 mm
-
e = M4 x 20
e = M4 x 20
e = M4 x 20
Revision: 19-Jul-16
Document Number: 21010
3
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
ZWS, ZWS E, ZWS Ni
www.vishay.com
Vishay Draloric
PACKAGING
TYPE
PACKAGING
CODE
LX
QUANTITY
FORMAT
DIMENSION OF PACKAGE
Box size selection according to quantity
and product size
All
Variable
Bulk, separately packed with paper
PART NUMBER AND PRODUCT DESCRIPTION
Part Number: ZWS006331001KLX000
Z
W
S
0
0
6
3
3
1
0
0
1
K
L
X
0
0
0
TYPE
ZWS006
= ZWS 6
ZWS008
= ZWS 8
ZWS012
= ZWS 12
ZWS015
= ZWS 15
ZWS020
= ZWS 20
ZWS035
= ZWS 35
ZWS050
= ZWS 50
ZWS100
= ZWS 100
ZWS150
= ZWS 150
ZWS250
= ZWS 250
ZWSN84
= ZWS 30/100
ZWSN91
= ZWS 30/133
VARIANT /
TERMINAL
3
= SL
4
= SS
5
= SB
6
= SSB
7
= FST
8
= E SL
9
= E SS
A
= E SB
B
= E SSB
C
= E FST
TCR / MATERIAL
1
= WM50
-10 ppm/K to
-80 ppm/K
3
= WM110
+100 ppm/K to
+180 ppm/K
RESISTANCE
3 digit value
1 digit
multiplier
MULTIPLIER
7
= *10
-3
8
= *10
-2
9
= *10
-1
0
= *10
0
1
= *10
1
2
= *10
2
3
= *10
3
TOLERANCE
G
=±2%
J
=±5%
K
= ± 10 %
PACKAGING
LX
=
loose pack
without
quantity
SPECIAL
000
= standard
3 digit code
=
customized version
Ni version
(1)
Product Description: ZWS 6 SL 3 1K0 10 %
ZWS6
SL
VARIANT /
TERMINAL
SL
SS
SB
SSB
FST
E SL
E SS
E SB
E SSB
E FST
3
1K0
10 %
TYPE
ZWS6
ZWS8
ZWS12
ZWS15
ZWS20
ZWS35
ZWS50
ZWS100
ZWS150
ZWS250
ZWS30/100
ZWS30/133
TCR / MATERIAL
1
= WM50
3
= WM110
RESISTANCE
R15
= 0.15
620K
= 620 k
TOLERANCE
±
2%
±
5%
±
10 %
Notes
• The products can be ordered using either the PRODUCT DESCRIPTION or the PART NUMBER.
(1)
For special windings or the non-inductive (ZWS Ni) versions, please contact:
ww1resistors@vishay.com.
Revision: 19-Jul-16
Document Number: 21010
4
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
ZWS, ZWS E, ZWS Ni
www.vishay.com
DESCRIPTION
The rugged design of cemented wirewound resistors enable
them to withstand extreme high pulses and makes them well
suited for use in high power / high current applications.
Production is strictly controlled and follows an extensive set
of instructions established for reproducibility. The winding is
done with specific materials on a specially developed fine
ceramic body (Al
2
O
3
). With different diameters and turn
spacings, a large ohmic value range can be offered. The
ceramic used meets the highest requirements against
mechanical resistance, thermal shock shocks, dielectric
strength, and insulation resistance at high temperatures.
The cement coating is fired layer by layer several times at
high temperatures. The resulting cement coating is resistant
to the cleaning solvents specified in IEC 60115-1
(1)
.
The resistors are marked with type, resistance, and
tolerance.
Product quality is verified by testing procedures, performed
on all individual resistors.
The ZWS series meet single lot / date code packaging
requirements.
Vishay Draloric
ASSEMBLY
The resistors are available with lug style terminals (SL style)
for soldering, multiple screw terminal options (SS style, SB
style, or SSB style) for mechanical and electrical fixing, or
fast plug terminals (FST style) for assembly / disassembly
processes. The terminals of the resistors are completely
lead (Pb)-free. The special tin plating used provides
compatibility with lead (Pb)-free and lead-containing
soldering processes.
3D-Models are available on request, please inquire at
ww1resistors@vishay.com.
Different mounting accessories are available, see the
datasheet:
www.vishay.com/doc?21015.
The slider of the adjustable type should be only moved after
removal of voltage and sufficient loosening of the screw.
APPLICATION INFORMATION
The power dissipation of the resistor generates a
temperature rise with respect to the ambient. The
permissible dissipation is derated for temperatures above
40°C, as shown in the derating diagram, in order to avoid
overheating of the resistor. The heat dissipated from the
resistor may affect adjacent components, hence proper
clearance will be required in order to avoid overheating.
All materials used are non-flammable and inorganic
according to UL 94-V0.
These resistors do not feature a limited lifetime when
operated within the permissible limits. However, resistance
value drift increasing over operating time may result in
exceeding a limit acceptable to the specific application,
thereby establishing a functional lifetime.
MATERIALS
Vishay acknowledges the following systems for the
regulation of hazardous substances:
• IEC 62474, Material Declaration for Products of and for the
Electrotechnical Industry, with the list of declarable
substances given therein
(2)
• The Global Automotive Declarable Substance List
(GADSL)
(3)
• The REACH regulation (1907/2006/EC) and the related list
of substances with very high concern (SVHC)
(4)
for its
supply chain
The products do not contain any of the banned substances
as per IEC 62474, GADSL, or the SVHC list, see
www.vishay.com/how/leadfree.
Hence the products fully comply with the following
directives:
• 2000/53/EC End-of-Life Vehicle Directive (ELV) and
Annex II (ELV II)
• 2011/65/EU Restriction of the Use of Hazardous
Substances
Directive
(RoHS)
with
amendment
2015/863/EU
• 2012/19/EU Waste Electrical and Electronic Equipment
Directive (WEEE)
Vishay pursues the elimination of conflict minerals from its
supply chain, see the Conflict Minerals Policy at
www.vishay.com/doc?49037.
RELATED PRODUCTS
In higher continuous power applications and more
demanding environmental conditions the vitreous coated
alternative, like the GWS series might be suitable, see the
datasheet:
“Vitreous Wirewound Resistors with Lugs”
www.vishay.com/doc?21003
For low ohmic values and rated dissipation up to 500 W,
there is the cemented coated ZBS series, see the datasheet:
“Cemented Wirewound Resistors with Corrugated Ribbon”
www.vishay.com/doc?21011
Notes
(1)
Other cleaning solvents with aggressive chemicals should be evaluated in actual cleaning process for their suitability.
(2)
The IEC 62474 list of declarable substances is maintained in a dedicated database, which is available at
http://std.iec.ch/iec62474.
(3)
The Global Automotive Declarable Substance List (GADSL) is maintained by the American Chemistry Council, and available at
www.gadsl.org.
(4)
The SVHC list is maintained by the European Chemical Agency (ECHA) and available at
http://echa.europa.eu/candidate-list-table.
Revision: 19-Jul-16
Document Number: 21010
5
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
