CW
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Vishay Dale
Wirewound Resistors, Commercial Power,
Silicone Coated, Axial Lead
FEATURES
• High performance for low cost
• High temperature silicone coating
• Complete welded construction
• Excellent stability in operation
• High power to size ratio
• Compliant to RoHS Directive 2002/95/EC
Notes
*
Pb containing terminations are not RoHS compliant, exemptions may apply
**
Please see document “Vishay Material Category Policy”:
www.vishay.com/doc?99902
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
POWER RATING
(1)
P
W POWER RATING
(1)
P
25 °C
W
HISTORICAL CHARACTERISTIC U
25 °C
+ 250 CHARACTERISTIC V + 350 RESISTANCE RANGE TOLERANCE WEIGHT
MODEL
± %
(2)
(max.) g
°C
°C
CW-1/2
0.5
-
0.1 to 1.77K
5, 10
0.21
CW-1
1.0
-
0.1 to 6.37K
5, 10
0.34
CW-1M
1.0
-
0.1 to 3.3K
5, 10
0.3
CW-2
4.0
5.5
0.1 to 28.7K
5, 10
2.1
CW-2M
3.0
3.75
0.1 to 12K
5, 10
0.65
CW-2B
3.0
3.75
0.1 to 15K
5, 10
0.7
5, 10
0.9
CW-2B-13
4.0
6.0
0.1 to 10.89K
(3)
CW-2C
2.5
3.25
0.1 to 19.9K
5, 10
1.8
CW-2C-14
2.5
3.25
0.1 to 19.9K
5, 10
1.2
CW-5
5.0
6.5
0.1 to 58.5K
5, 10
4.2
CW-5-2
4.0
5.0
0.1 to 40.3K
5, 10
4.2
CW-5-3
5.0
6.5
0.1 to 58.5K
5, 10
4.2
CW-7
7.0
9.0
0.1 to 95.2K
5, 10
4.7
CW-10
10.0
13.0
0.1 to 167K
5, 10
9.0
CW-10-3
10.0
13.0
0.1 to 167K
5, 10
9.0
CW1/2
CW001
CW01M
CW002
CW02M
CW02B
CW02B...13
CW02C
CW02C...14
CW005
CW005...2
CW005...3
CW007
CW010
CW010...3
Notes
(1)
Vishay Dale CW models have two power ratings, depending on operating temperature and stability requirements
(2)
3 % tolerance available
(3)
Higher values available on request
TECHNICAL SPECIFICATIONS
PARAMETER
UNIT
Temperature Coefficient
ppm/°C
Dielectric Withstanding Voltage
V
AC
Short Time Overload
-
Terminal Strength
lb
Maximum Working Voltage
V
Operating Temperature Range
°C
Power Rating
-
CW RESISTOR CHARACTERISTICS
± 30 for 10
and above, ± 50 for 1.0
to 9.9
,
± 90 for 0.5
to 0.99
1000
5 x rated power for 5 s for 3.75 W size and smaller, 10 x rated power for 5 s for 4 W size and greater
10 minimum
(P
x R)
1/2
Characteristic U = - 65 to + 250, characteristic V = - 65 to + 350
Characteristic U = + 250 °C max. hot spot temperature, ± 0.5 % max.
R
in 2000 h load life
Characteristic V = + 350 °C max. hot spot temperature, ± 3.0 % max.
R
in 2000 h load life
GLOBAL PART NUMBER INFORMATION
Global Part Numbering example: CW02C10K00JB1214
C
GLOBAL MODEL
(See Standard
Electrical
Specifications
Global Model
column for
options)
W
0
2
C
1
0
K
0
0
J
B
1
2
1
4
PACKAGING
SPECIAL
(Dash Number)
E70
= Lead (Pb)-free, tape/reel, 1K pcs (smaller than CW005)
E73
= Lead (Pb)-free, tape/reel, 500 pcs
(up to 3 digits)
E12
= Lead (Pb)-free, bulk
From
1 to 999
D18
= Lead (Pb)-free, R1R80 tape/reel
as applicable
CW02B...13 pack code for Europe use only
S70
= Tin/lead, tape/reel, 1K pcs (smaller than CW005)
S73
= Tin/lead, tape/reel, 500 pcs
B12
= Tin/lead, bulk
Historical Part Numbering example: CW-2C-14 10 k 5 % B12
CW-2C-14
10 k
5%
B12
HISTORICAL MODEL
RESISTANCE VALUE
TOLERANCE CODE
PACKAGING
Document Number: 30215
1
For technical questions, contact:
ww2aresistors@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
VALUE
TOLERANCE
R
= Decimal
H
= ± 3.0 %
K
= Thousand
J
= ± 5.0 %
1R500
= 1.5
K
= ± 10.0 %
1K500
= 1.5 k
Revision: 01-Feb-12
CW
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DIMENSIONS
in inches (millimeters)
1.50 [38.10]
(1)
min.
A
C
Vishay Dale
B
D
MODEL
DIMENSIONS
in inches [millimeters]
A
0.250 ± 0.031 [6.35 ± 0.787]
0.406 ± 0.031 [10.31 ± 0.787]
0.285 ± 0.025 [7.24 ± 0.635]
0.625 ± 0.062 [15.87 ± 1.57]
0.500 ± 0.062 [12.70 ± 1.57]
0.562 ± 0.062 [14.27 ± 1.57]
0.500 ± 0.062 [12.70 ± 1.57]
0.500 ± 0.062 [12.70 ± 1.57]
0.500 ± 0.062 [12.70 ± 1.57]
0.875 ± 0.062 [22.22 ± 1.57]
0.875 ± 0.062 [22.22 ± 1.57]
0.875 ± 0.062 [22.22 ± 1.57]
1.218 ± 0.062 [30.94 ± 1.57]
1.781 ± 0.062 [45.24 ± 1.57]
1.781 ± 0.062 [45.24 ± 1.57]
B [MAXIMUM]
(2)
0.281 [7.14]
0.437 [11.10]
0.311 [7.90]
0.765 [19.43]
0.562 [14.27]
0.622 [15.80]
0.563 [14.30]
0.593 [15.06]
0.593 [15.06]
1.0 [25.40]
1.0 [25.40]
1.0 [25.40]
1.281 [32.54]
1.875 [47.62]
1.875 [47.62]
C
0.085 ± 0.020 [2.16 ± 0.508]
0.094 ± 0.031 [2.39 ± 0.787]
0.110 ± 0.015 [2.79 ± 0.381]
0.250 ± 0.032 [6.35 ± 0.813]
0.185 ± 0.015 [4.70 ± 0.381]
0.188 ± 0.032 [4.78 ± 0.813]
0.188 ± 0.032 [4.78 ± 0.813]
0.218 ± 0.032 [5.54 ± 0.813]
0.218 ± 0.032 [5.54 ± 0.813]
0.312 ± 0.032 [7.92 ± 0.813]
0.250 ± 0.032 [6.35 ± 0.813]
0.312 ± 0.032 [7.92 ± 0.813]
0.312 ± 0.032 [7.92 ± 0.813]
0.375 ± 0.032 [9.52 ± 0.813]
0.375 ± 0.032 [9.52 ± 0.813]
D
0.020 ± 0.002 [0.508 ± 0.051]
0.020 ± 0.002 [0.508 ± 0.051]
0.020 ± 0.002 [0.508 ± 0.051]
0.040 ± 0.002 [1.02 ± 0.051]
0.032 ± 0.002 [0.813 ± 0.051]
0.032 ± 0.002 [0.813 ± 0.051]
0.032 ± 0.002 [0.813 ± 0.051]
0.040 ± 0.002 [1.02 ± 0.051]
0.032 ± 0.002 [0.813 ± 0.051]
0.040 ± 0.002 [1.02 ± 0.051]
0.032 ± 0.002 [0.813 ± 0.051]
0.032 ± 0.002 [0.813 ± 0.051]
0.040 ± 0.002 [1.02 ± 0.051]
0.040 ± 0.002 [1.02 ± 0.051]
0.032 ± 0.002 [0.813 ± 0.051]
CW1/2
CW001
CW01M
CW002
CW02M
CW02B
CW02B...13
CW02C
CW02C...14
CW005
CW005...2
CW005...3
CW007
CW010
CW010...3
Notes
(1)
On some standard reel pack methods, the leads may be trimmed to a shorter length than shown
(2)
B (maximum) dimension is clean lead to clean lead
MATERIAL SPECIFICATIONS
Element:
Copper-nickel alloy or nickel-chrome alloy,
depending on resistance value
Core:
Ceramic: Steatite or alumina, depending on physical
size
Coating:
Special high temperature silicone
Standard Terminals:
Tinned Copperweld
®
(CW02B…13 is tinned copper)
End Caps:
Stainless steel
Part Marking:
DALE, model, wattage
(3)
, value, tolerance,
date code
Note
(3)
Wattage marked on resistor will be “V” characteristic, CW1/2 will
not be marked with wattage
DERATING
RATED POWER IN %
120
100
80
60
40
20
0
CHAR. U
CHAR. V
- 50
- 65
0
25
50
150
250
350
AMBIENT TEMPERATURE IN °C
PERFORMANCE
TEST
Thermal Shock
Short Time Overload
Dielectric Withstanding
Voltage
Low Temperature Storage
High Temperature Exposure
Moisture Resistance
Shock, Specified Pulse
Vibration, High Frequency
Load Life
Terminal Strength
CONDITIONS OF TEST
Rated power applied until thermally stable, then a minimum of 15 min at - 55 °C
5 x rated power (3.75 W and smaller), 10 x rated power (4 W and larger) for 5 s
1000 V
rms
, 1 min
- 65 °C for 24 h
250 h at + 350 °C
MIL-STD-202 Method 106, 7b not applicable
MIL-STD-202 Method 213, 100 g’s for 6 ms, 10 shocks
Frequency varied 10 Hz to 2000 Hz, 20 g peak, 2 directions 6 h each
2000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF”
5 s to 10 s 10 pound pull test; torsion test - 3 alternating directions, 360° each
TEST LIMITS
(4)
(CHARACTERISTIC V)
± (2.0 % + 0.05
) R
± (2.0 % + 0.05
) R
± (0.1 % + 0.05
) R
± (2.0 % + 0.05
) R
± (4.0 % + 0.05
) R
± (2.0 % + 0.05
) R
± (0.2 % + 0.05
) R
± (0.2 % + 0.05
) R
± (3.0 % + 0.05
) R
± (1.0 % + 0.05
) R
Note
(4)
All
R
figures shown are maximum, based upon testing requirements per MIL-PRF-26 at a maximum operating temperature of + 350 °C.
R
maximum figures are considerably lower when tested at a maximum operating temperature of + 250 °C.
Revision: 01-Feb-12
Document Number: 30215
2
For technical questions, contact:
ww2aresistors@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
Legal Disclaimer Notice
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular
product with the properties described in the product specification is suitable for use in a particular application. Parameters
provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All
operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk and agree
to fully indemnify and hold Vishay and its distributors harmless from and against any and all claims, liabilities, expenses and
damages arising or resulting in connection with such use or sale, including attorneys fees, even if such claim alleges that Vishay
or its distributor was negligent regarding the design or manufacture of the part. Please contact authorized Vishay personnel to
obtain written terms and conditions regarding products designed for such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by
any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 11-Mar-11
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