MODEL CW
Wirewound Resistors
Commercial Coated
FEATURES
• High performance for low cost
• High temperature silicone coating
• Complete welded construction
• Excellent stability in operation
• High power/size ratio
MEMO TO DIV:
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MISSING INFO
S TANDARD ELECTRICAL S P ECIFICATIONS
POWER RATING
(Max. Hot Spot)
MAXIMUM*
WORKING VOLTAGE
RESISTANCE
RANGE
MAXIMUM
WEIGHT
(Grams)
Characteristic U
Characteristic V
Characteristic U
Characteristic V
(Ohms)
MODEL
CW-1/2
CW-1
+ 275°C
+ 350°C
+ 275°C
+ 350°C
.5 W
1.0 W
1.0 W
4.0 W
3.0 W
3.0 W
2.5 W
2.5 W
5.0 W
4.0 W
5.0 W
7.0 W
10.0 W
10.0 W
—
0.1 - 1.54k
0.1 - 5.50k
0.1 - 3.30k
0.1 - 28.7k
0.1 - 8.38k
0.1 - 15k
19.6 V
45.9 V
.21
.34
.30
2.1
.65
.70
1.6
1.6
4.2
4.2
4.2
4.7
9.0
9.0
—
—
—
CW-1M
CW-2
—
37.4 V
—
5.5 W
3.75 W
3.75 W
3.25 W
3.25 W
6.5 W
5.0 W
6.5 W
9.0 W
13.0 W
13.0 W
200.0 V
83.0 V
235.0 V
116.0 V
140.0 V
150.0 V
150.0 V
365.0 V
265.0 V
365.0 V
520.0 V
875.0 V
875.0 V
CW-2M
CW-2B
CW-2C
CW-2C-14
CW-5
125.0 V
130.0 V
130.0 V
320.0 V
240.0 V
320.0 V
460.0 V
765.0 V
765.0 V
0.1 - 19.9k
0.1 - 19.9k
0.1 - 58.5k
0.1 - 40.3k
0.1 - 58.5k
0.1 - 95.2k
0.1 - 167k
0.1 - 167k
CW-5-2
CW-5-3
CW-7
CW-10
CW-10-3
*Maximum working voltage determined at .0008" [.020mm] diameter wire resistance values.
Note: Shaded areas indicate most popular models.
ELECTRICAL S P ECIFICATIONS
MECHANICAL S P ECIFICATIONS
Terminal Strength: 10 pound pull test.
Resistance Tolerance: ± 5% standard 1 ohm and above.
± 10% standard below 1 ohm. ± 3% available.
Solderability: 60/40 electro tin plated terminals to
facilitate soldering.
Temperature Coefficient: (- 55°C to + 350°C).
± 90PPM/°C below 1 ohm.
MATERIAL S P ECIFICATIONS
Core: Ceramic: Steatite or alumina, depending on
physical size.
± 50PPM/°C 1 ohm to 9.9 ohm.
± 30PPM/°C 10 ohm and above.
Element: Copper-nickel alloy or nickel-chrome alloy,
depending on resistance value.
Short Time Overload: 5 seconds at 5 times rated power for
3.75 watt size and smaller. 5 seconds at 10 times rated
power for 4 watt size and larger.
End Caps: Stainless steel.
Coating: Special high temperature silicone.
Standard Terminals: Tinned Copperweld®.
Dielectric Strength: 1000 VAC minimum.
Vishay Dale 1122 23rd Street, Columbus, NE 68601-3647 • Phone (402) 563-6506 • Fax 402-563-6418 • Internet www.vishay.com
Major Vishay Brands Dale • Draloric • Foil Resistors • Measurements Group • Roederstein • Sfernice • Sprague • Thin Film • Vitramon