GWK
Vishay Draloric
www.vishay.com
92
Document Number 21006
Revision 22-Mar-06
For technical questions, contact ww1resistors@vishay.com
FEATURES
•
Caps made from drawn brass, nickel plated (GZK style
)
•
Machined caps with inner thread available (GDK style)
• Easy to change when mounted with spring clips
• Complete vitreous coating for perfect humidity protection
• TCR 100. . .180 ppm/K - WM110 (Class 3)
• Lead (Pb)-free
Vitreous Wirewound Resistors with Ferrules
STANDARD ELECTRICAL SPECIFICATIONS
MODEL POWER RATING LIMITING RESISTANCE TOLERANCE E-SERIES
P40°CVOLTAGE RANGE
WVΩ± %
GWK 10 10
GWK 10 Ni 7
GWK 20 20
GWK 20 Ni 13
GWK 40 30
GWK 40 Ni 20
GWK 60 40
GWK 60 Ni 25
GWK 100 80
GWK 100 Ni 50
GWK 150 100
GWK 150 Ni 60
GWK 200 160
GWK 200 Ni 100
GWK 300 260
GWK 300 Ni 180
280
400
580
850
1200
1600
2300
4000
1R8 - 16K 10 E 12
6R8 - 16K 5 E 24
270R - 16K 2 E 24
2R4 - 1K0 10 E 12
15R - 1K0 5 E 24
2R2 - 27K 10 E 12
12R - 27K 5 E 24
360R - 27K 2 E 24
4R7 - 1K8 10 E 12
20R - 1K8 5 E 24
3R3 - 43K 10 E 12
12R - 43K 5 E 24
470R - 43K 2 E 24
6R8 - 2K7 10 E 12
20R - 2K7 5 E 24
6R2 - 82K 10 E 12
6R2 - 82K 5 E 24
47R - 82K 2 E 24
13R - 5K1 10 E 12
13R - 5K1 5 E 24
8R2 - 82K 10 E 12
8R2 - 82K 5 E 24
47R - 82K 2 E 24
27R - 10K 10 E 12
27R - 10K 5 E 24
12R - 110K 10 E 12
12R - 110K 5 E 24
30R - 110K 2 E 24
36R - 15K 10 E 12
36R - 15K 5 E 24
20R - 180K 10 E 12
20R - 180K 5 E 24
20R - 180K 2 E 24
56R - 22K 10 E 12
56R - 22K 5 E 24
36R - 330K 10 E 12
36R - 330K 5 E 24
36R - 330K 2 E 24
100R - 43K 10 E 12
100R - 43K 5 E 24
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GWK
Vishay Draloric
Document Number 21006
Revision 22-Mar-06
For technical questions, contact ww1resistors@vishay.com
Vitreous Wirewound Resistors with Ferrules
ORDERING INFORMATION
GWK 100 100R ± 5 %
MODEL SIZE SET FREE FOR DRAWN RESISTANCE VALUE TOLERANCE
CAPS OR ADD “M4” FOR Ω± %
MACHINED CAPS WITH
INNER THREAD M4 (M4
IS STANDARD, OTHER
THREADS AVAILABLE)
DIMENSIONS
GWK 20 GWK 40 GWK 60
GWK 20 Ni GWK 40 Ni GWK 60 Ni
12.3± 0.8 [0.484±0.031] 15.3±0.8 [0.602±0.031] 15.3±0.8 [0.602±0.031]
51±1.3 [2.008±0.051]61
±1.5 [2.402±0.059]81
±2 [3.189±0.079]
11 [0.433] 14 [0.551] 14 [0.551
10 [0.394] 13 [0.512] 13 [0.512]
4.5 [0.177] 5.5 [0.217] 5.5 [0.217]
MODEL DIMENSIONS in millimeters [inches]
GWK100 GWK 150 GWK 200 GWK 300
GWK 100 Ni GWK 150 Ni GWK 200 Ni GWK 300 Ni
D22 ±1 [0.866±0.039] 22 ±1 [0.866±0.039]22
±1 [0.866±0.039] 22 ±1 [0.866±0.039]
L101±2.5 [3.976±0.098] 121±3 [4.764±0.118] 166.5 ±4.2 [6.555±0.165] 266.5 ±6.7 [10.492±0.264]
DK21 [0.827] 21 [0.827] 21 [0.827] 21 [0.827]
LK16 [0.63] 16 [0.63] 16 [0.63] 16 [0.63]
d10 [0.394] 10 [0.394] 10 [0.394] 10 [0.394]
MODEL DIMENSIONS in millimeters [inches]
D
L
DK
LK
d
GWK 10
GWK 10 Ni
See Drawing Figure 1
46 ± 1
[1.811 ± 0.039]
1.5
[0.059]
11
[0.433]
ø 7.5 ± 0.5
[0.295 ± 0.020]
ø 7
[0.276]
M2
Figure 1: GWK 10
L
LK
DK
D
d
Figure 2: GWK 20...GWK 300
GWK
Vishay Draloric
www.vishay.com
94
Document Number 21006
Revision 22-Mar-06
For technical questions, contact ww1resistors@vishay.com
Vitreous Wirewound Resistors with Ferrules
Temperature Rise
500
400
300
200
100
00 5 10 15 20 25
POWER IN W
TEMPERATURE RISE IN °C
GWK 20
Temperature Rise
500
400
300
200
100
00 10 20 30 40 50
POWER IN W
TEMPERATURE RISE IN °C
GWK 40
Derating
120
100
80
60
40
20
0- 55 50 150 250 350
AMBIENT TEMPERATURE IN °C
RATED POWER IN %
Temperature Rise
500
400
300
200
100
0
0 2 4 6 8 10
POWER IN W
TEMPERATURE RISE IN °C
GWK 10
Temperature Rise
500
400
300
200
100
00 20 40 60 80 100
POWER IN W
TEMPERATURE RISE IN °C
GWK 150
Temperature Rise
500
400
300
200
100
00 40 80 120 160 200
POWER IN W
TEMPERATURE RISE IN °C
GWK 200
GWK 300
Temperature Rise
500
400
300
200
100
00 10 20 30 40 50
POWER IN W
TEMPERATURE RISE IN °C
GWK 60
Temperature Rise
500
400
300
200
100
00 20 40 60 80 100
POWER IN W
TEMPERATURE RISE IN °C
GWK 100
40
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GWK
Vishay Draloric
Document Number 21006
Revision 22-Mar-06
For technical questions, contact ww1resistors@vishay.com
Vitreous Wirewound Resistors with Ferrules
PULSE HANDLING FOR SHORT PULSES (less than 100 milliseconds)
For single pulsed up to 100 milliseconds duration time the following energy resistance chart can be used to calculate the
energy a resistor can handle. Look to the resistance value or the next higher value of the model you need and follow this row
to the energy per ohm column to the left. The energy per ohm value multiplied by the resistance value is the energy the
resistor can handle for 100 milliseconds. This energy divided by .1 ms is the power the resistor can handle for 100
milliseconds. For the power the resistor can handle for 10 milliseconds needed divide the energy by .01. The maximum pulse
power is limited at 625 x rated power.
Do not use this chart for GWK...ni styles. For more information and assistance please contact factory.
ENERGY RESISTANCE CHART
ENERGY/
Ω
R [
Ω
] ENERGY/
Ω
R [
Ω
] ENERGY/
Ω
R [
Ω
] ENERGY/
Ω
R [
Ω
] ENERGY/
Ω
R [
Ω
] ENERGY/
Ω
R [
Ω
] ENERGY/
Ω
R [
Ω
] ENERGY/
Ω
R [
Ω
]
[Ws/
Ω
] [Ws/
Ω
] [Ws/
Ω
] [Ws/
Ω
] [Ws/
Ω
] [Ws/
Ω
] [Ws/
Ω
] [Ws/
Ω
]
1.17E - 04 16.0K 1.15E - 04 27.0K 1.15E - 04 43.0K 1.15E - 04 82.0K 2.80E - 04 82.0K 2.80E - 04 110K 2.80E - 04 180K 2.79E - 04 330K
1.17E - 04 13.0K 1.16E - 04 2.40K 1.15E - 04 36.0K 1.15E - 04 68.0K 2.80E - 04 62.0K 2.80E - 04 82.0K 2.80E - 04 130K 2.80E - 04 240K
1.72E - 04 9.1K 1.70E - 04 16.0K 1.69E - 04 24.0K 1.68E - 04 43.0K 4.41E - 04 43.0K 4.40E - 04 56.0K 4.40E - 04 91.0K 4.40E - 04 160K
2.88E - 04 6.2K 2.83E - 04 11.0K 2.82E - 04 18.0K 2.81E - 04 33.0K 7.52E - 04 30.0K 7.51E - 04 39.0K 7.51E - 04 62.0K 7.50E - 04 120K
4.53E - 04 4.3K 4.47E - 04 7.5K 4.45E - 04 11.0K 4.42E - 04 22.0K 1.20E - 03 22.0K 1.20E - 03 30.0K 1.20E - 03 47.0K 1.20E - 03 82.0K
7.72E - 04 3.0K 7.65E - 04 5.1K 7.58E - 04 8.2K 7.54E - 04 15.0K 1.84E - 03 15.0K 1.83E - 03 20.0K 1.83E - 03 33.0K 1.83E - 03 62.0K
1.24E - 03 2.2K 1.23E - 03 3.9K 1.22E - 03 5.6K 1.21E - 03 11.0K 2.93E - 03 10.0K 2.93E - 03 15.0K 2.93E - 03 22.0K 2.92E - 03 39.0K
1.91E - 03 1.5K 1.87E - 03 2.7K 1.86E - 03 3.9K 1.84E - 03 7.5K 4.53E - 03 3.0K 4.51E - 03 4.3K 4.49E - 03 6.8K 4.48E - 03 12.0K
3.06E - 03 1.1K 3.00E - 03 1.8K 2.98E - 03 2.7K 2.95E - 03 5.1K 7.12E - 03 2.2K 7.09E - 03 3.0K 7.05E - 03 4.7K 7.04E - 03 9.1K
5.05E - 03 330 4.79E - 03 560 4.70E - 03 820 4.58E - 03 1.6K 1.14E - 02 1.6K 1.14E - 02 2.0K 1.13E - 02 3.3K 1.13E - 02 6.2K
8.11E - 03 220 7.61E - 03 390 7.44E - 03 560 7.20E - 03 1.1K 1.85E - 02 1.1K 1.84E - 02 1.5K 1.83E - 02 2.4K 1.83E - 02 4.3K
1.31E - 02 160 1.23E - 02 300 1.19E - 02 430 1.17E - 02 750 2.98E - 02 750 2.97E - 02 1.0K 2.94E - 02 1.6K 2.94E - 02 3.0K
2.06E - 02 110 2.01E - 02 200 1.94E - 02 300 1.89E - 02 560 4.81E - 02 560 4.78E - 02 750 4.75E - 02 1.2K 4.73E - 02 2.2K
3.56E - 02 75 3.24E - 02 150 3.16E - 02 200 3.04E - 02 390 1.14E - 01 390 1.14E - 01 560 7.23E - 02 1.0K 7.20E - 02 1.8K
5.77E - 02 56 5.30E - 02 100 5.10E - 02 150 4.93E - 02 270 1.79E - 01 300 1.78E - 01 390 1.13E - 01 910 1.13E - 01 1.6K
1.34E - 01 43 1.24E - 01 75 1.21E - 01 110 7.49E - 02 220 2.81E - 01 200 2.79E - 01 270 1.77E - 01 620 1.76E - 01 1.1K
2.14E - 01 30 1.98E - 01 51 1.90E - 01 75 1.17E - 01 200 4.81E - 01 150 4.79E - 01 180 2.77E - 01 430 2.76E - 01 750
3.47E - 01 20 3.14E - 01 36 3.00E - 01 56 1.83E - 01 150 7.75E - 01 100 7.69E - 01 130 4.75E - 01 300 4.72E - 01 560
5.96E - 01 15 5.48E - 01 24 5.22E - 01 36 2.88E - 01 100 1.19E + 00 68 1.17E + 00 100 7.62E - 01 220 7.57E - 01 390
9.93E - 01 10 8.86E - 01 18 8.41E - 01 27 4.96E - 01 68 1.87E + 00 51 1.85E + 00 68 1.17E + 00 150 1.16E + 00 270
1.54E + 00 7.5 1.38E + 00 13 1.29E + 00 20 7.98E - 01 51 2.92E + 00 36 2.89E + 00 47 1.83E + 00 110 1.81E + 00 200
2.52E + 00 5.1 2.21E + 00 9.1 2.05E + 00 15 1.23E + 00 36 4.61E + 00 27 4.56E + 00 36 2.85E + 00 82 2.82E + 00 150
4.00E + 00 3.9 3.48E + 00 6.8 3.26E + 00 10 1.93E + 00 27 7.46E + 00 18 7.36E + 00 24 4.50E + 00 56 4.45E + 00 100
6.58E + 00 2.7 5.64E + 00 4.7 5.26E + 00 6.8 3.05E + 00 18 1.21E + 01 12 1.19E + 01 18 7.24E + 00 39 7.16E + 00 68
1.12E + 01 1.8 9.11E + 00 3.6 8.50E + 00 5.1 4.84E + 00 13 1.97E ± 01 8.2 1.93E + 01 12 1.17E + 01 27 1.15E + 01 51
1.56E + 01 2.2 1.42E + 01 3.3 7.86E + 00 9.1 1.89E + 01 20 1.86E + 01 36
1.29E + 01 6.2
GWK10 GWK 20 GWK 40 GWK 60 GWK 100 GWK 150 GWK 200 GWK 300
Legal Disclaimer Notice
Vishay
Document Number: 91000 www.vishay.com
Revision: 08-Apr-05 1
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
