CW
Vishay Dale
Wirewound Resistors, Commercial Coated, Axial Lead
FEATURES
• High performance for low cost
Pb-free
• High temperature silicone coating
• Complete welded construction
• Excellent stability in operation
• High power to size ratio
Available
e3
RoHS*
• Lead (Pb)-free version is RoHS compliant
COMPLIANT
STANDARD ELECTRICAL SPECIFICATIONS
POWER RATING** P25 °C W
Characteristic U + 25ꢁ °C Characteristic V + 35ꢁ °C
GLOBAL
MODEL
HISTORICAL
MODEL
RESISTANCE RANGE Ω WEIGHT (Max.)
± 5 ꢀ, ± ±ꢁ ꢀ***
g
CW1/2
CW001
CW01M
CW002
CW02M
CW02B
CW02B...13
CW02C
CW02C...14
CW005
CW005...2
CW005...3
CW007
CW-1/2
CW-1
CW-1M
CW-2
CW-2M
CW-2B
CW-2B-13
CW-2C
CW-2C-14
CW-5
CW-5-2
CW-5-3
CW-7
0.5
1.0
1.0
4.0
3.0
3.0
4.0
2.5
2.5
5.0
4.0
5.0
7.0
10.0
10.0
-
-
-
0.1 - 1.77K
0.1 - 6.37K
0.1 - 3.3K
0.1 - 28.7K
0.1 - 12K
0.21
0.34
0.3
2.1
0.65
0.7
0.9
1.8
1.2
4.2
4.2
4.2
4.7
9.0
9.0
5.5
3.75
3.75
6.0
3.25
3.25
6.5
5.0
6.5
9.0
13.0
13.0
0.1 - 15K
0.1 - 6.8K
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
CW010
CW010...3
CW-10
CW-10-3
** Vishay Dale CW models have two power ratings, depending on operating temperature and stability requirements
*** 3 % tolerance available
• Shaded areas indicate most popular models
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
ppm/°C
VAC
CW RESISTOR CHARACTERISTICS
90 for below 1.0 Ω, 50 for 1.0 Ω to 9.9 Ω, 30 for 10 Ω and above
1000
Temperature Coefficient
Dielectric Withstanding Voltage
5 × rated power for 5 sec. for 3.75 W size and smaller,
10 × rated power for 5 sec. for 4 W size and greater
Short Time Overload
-
Terminal Strength
Maximum Working Voltage
Operating Temperature Range
lb
V
°C
10 minimum
(P × R)1/2
Characteristic U = - 65/+ 250, Characteristic V = - 65/+ 350
Characteristic U = + 250 °C max. hot spot temperature, 0.5 % max. ΔR in 2000 hrs. load life
Characteristic V = + 350 °C max. hot spot temperature, 3.0 % max. ΔR in 2000 hrs. load life
Power Rating
-
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: CWꢁ2C±ꢁKꢁꢁJB±2±4 (preferred part numbering format)
C
W
ꢁ
2
C
±
ꢁ
K
ꢁ
ꢁ
J
B
±
2
±
4
RESISTANCE
VALUE
R = Decimal
K = Thousand
±R5ꢁꢁ = 1.5 Ω
±K5ꢁꢁ = 1.5 kΩ
TOLERANCE
CODE
H = 3 %
J = 5 %
K = 10 %
SPECIAL
PACKAGING
GLOBAL MODEL
(Dash Number)
(up to 3 digits)
From ±-999
(See Standard Electrical
Specifications Global Model
column for options)
E7ꢁ = Lead (Pb)-free, Tape/Reel 1k pcs
E73 = Lead (Pb)-free, Tape/Reel 500 pcs
E±2 = Lead (Pb)-free, Bulk
D±8 = Lead (Pb)-free, R1R80 Tape/Reel
CW02B...13 pack code for Europe use only
as applicable
S7ꢁ = Tin/Lead, Tape/Reel 1k pcs
S73 = Tin/Lead, Tape/Reel 500 pcs
B±2 = Tin/Lead, Bulk
Historical Part Number example: CW-2C-±4 ±ꢁ kΩ 5 % B±2 (will continue to be accepted)
CW-2C-±4
±ꢁ kΩ
5 %
B±2
HISTORICAL MODEL
RESISTANCE VALUE
TOLERANCE CODE
PACKAGING
* Pb containing terminations are not RoHS compliant, exemptions may apply
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For technical questions, contact: ww2aresistors@vishay.com
Document Number: 30215
Revision: 13-Sep-06