Wirewound Resistors, Commercial Coated, Axial Lead
CW
Vishay Dale
www.vishay.com For technical questions, contact: ww2aresistors@vishay.com Document Number: 30215
26 Revision: 13-Sep-06
FEATURES
•High performance for low cost
•High temperature silicone coating
•Complete welded construction
•Excellent stability in operation
•High power to size ratio
•Lead (Pb)-free version is RoHS compliant
** Vishay Dale CW models have two power ratings, depending on operating temperature and stability requirements
*** 3 % tolerance available • Shaded areas indicate most popular models
* Pb containing terminations are not RoHS compliant, exemptions may apply
Available
Pb-free
RoHS*
COMPLIANT
e3
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
HISTORICAL
MODEL
POWER RATING** P25 °C WRESISTANCE RANGE Ω
± 5 %, ± 10 %***
WEIGHT (Max.)
g
Characteristic U + 250 °C Characteristic V + 350 °C
CW1/2 CW-1/2 0.5 - 0.1 - 1.77K 0.21
CW001 CW-1 1.0 -0.1 - 6.37K 0.34
CW01M CW-1M 1.0 - 0.1 - 3.3K 0.3
CW002 CW-2 4.0 5.5 0.1 - 28.7K 2.1
CW02M CW-2M 3.0 3.75 0.1 - 12K 0.65
CW02B CW-2B 3.0 3.75 0.1 - 15K 0.7
CW02B...13 CW-2B-13 4.0 6.0 0.1 - 6.8K 0.9
CW02C CW-2C 2.5 3.25 0.1 - 19.9K 1.8
CW02C...14 CW-2C-14 2.5 3.25 0.1 - 19.9K 1.2
CW005 CW-5 5.0 6.5 0.1 - 58.5K 4.2
CW005...2 CW-5-2 4.0 5.0 0.1 - 40.3K 4.2
CW005...3 CW-5-3 5.0 6.5 0.1 - 58.5K 4.2
CW007 CW-7 7.0 9.0 0.1 - 95.2K 4.7
CW010 CW-10 10.0 13.0 0.1 - 167K 9.0
CW010...3 CW-10-3 10.0 13.0 0.1 - 167K 9.0
TECHNICAL SPECIFICATIONS
PARAMETER UNIT CW RESISTOR CHARACTERISTICS
Temperature Coefficient ppm/°C ± 90 for below 1.0 Ω, ± 50 for 1.0 Ω to 9.9 Ω, ± 30 for 10 Ω and above
Dielectric Withstanding Voltage VAC 1000
Short Time Overload -
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
Terminal Strength lb 10 minimum
Maximum Working Voltage V (P × R)1/2
Operating Temperature Range °C Characteristic U = - 65/+ 250, Characteristic V = - 65/+ 350
Power Rating - 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
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: CW02C10K00JB1214 (preferred part numbering format)
CW02C10K00JB1214
GLOBAL MODEL
(See Standard Electrical
Specifications Global Model
column for options)
SPECIAL
From 1-999
(Dash Number)
(up to 3 digits)
as applicable
RESISTANCE
VALUE
R = Decimal
K = Thousand
1R500 = 1.5 Ω
1K500 = 1.5 k Ω
TOLERANCE
CODE
H = ± 3 %
J = ± 5 %
K = ± 10 %
Historical Part Number example: CW-2C-14 10 k Ω 5 % B12 (will continue to be accepted)
HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE PACKAGING
CW-2C-14 10 k Ω 5 %B12
PACKAGING
E70 = Lead (Pb)-free, Tape/Reel 1k pcs
E73 = Lead (Pb)-free, Tape/Reel 500 pcs
E12 = Lead (Pb)-free, Bulk
S70 = Tin/Lead, Tape/Reel 1k pcs
S73 = Tin/Lead, Tape/Reel 500 pcs
B12 = Tin/Lead, Bulk
D18 = Lead (Pb)-free, R1R80 Tape/Reel
CW02B...13 pack code for Europe use only
CW
Wirewound Resistors, Commercial Coated, Axial Lead Vishay Dale
Document Number: 30215 For technical questions, contact: ww2aresistors@vishay.com www.vishay.com
Revision: 13-Sep-06 27
DIMENSIONS
* On some standard reel pack methods, the leads may be trimmed
to a shorter length than shown.
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®
End Caps: Stainless steel
Part Marking: DALE, Model, Wattage**, Value, Tolerance,
Date Code
** Wattage marked on resistor will be “V” characteristic, CW1/2 will
not be marked with wattage
*** B (Maximum) dimension is clean lead to clean lead.
**** All ΔR figures shown are maximum, based upon testing requirements per MIL-PRF-26 at a maximum operating temperature of + 350 °C.
ΔR maximum figures are considerably lower when tested at a maximum operating temperature of + 250 °C.
D
C
1.50 [38.10]*
Minimum A
B
Derating
120
100
80
60
40
20
0
- 65 - 50 0 50 150 250 350
AMBIENT TEMPERATURE IN °C
% NI REWOP DE
T
AR
CHAR. V
CHAR. U
25
MODEL
DIMENSIONS
in inches [millimeters]
AB
(Maximum)*** CD
CW1/2
0.250 ± 0.031
[6.35 ± 0.787]
0.281
[7.14]
0.085 ± 0.020
[2.16 ± 0.508]
0.020 ± 0.002
[0.508 ± 0.051]
CW001
0.406 ± 0.031
[10.31 ± 0.787]
0.437
[11.10]
0.094 ± 0.031
[2.39 ± 0.787]
0.020 ± 0.002
[0.508 ± 0.051]
CW01M
0.285 ± 0.025
[7.24 ± 0.635]
0.311
[7.90]
0.110 ± 0.015
[2.79 ± 0.381]
0.020 ± 0.002
[0.508 ± 0.051]
CW002
0.625 ± 0.062
[15.87 ± 1.57]
0.765
[19.43]
0.250 ± 0.032
[6.35 ± 0.813]
0.040 ± 0.002
[1.02 ± 0.051]
CW02M
0.500 ± 0.062
[12.70 ± 1.57]
0.562
[14.27]
0.185 ± 0.015
[4.70 ± 0.381]
0.032 ± 0.002
[0.813 ± 0.051]
CW02B
0.562 ± 0.062
[14.27 ± 1.57]
0.622
[15.80]
0.188 ± 0.032
[4.78 ± .813]
0.032 ± 0.002
[0.813 ± 0.051]
CW02B...13
0.500 ± 0.062
[12.70 ± 1.57]
0.563
[14.30]
0.188 ± 0.032
[4.78 ± 0.813]
0.032 ± 0.002
[0.813 ± 0.051]
CW02C
0.500 ± 0.062
[12.70 ± 1.57]
0.593
[15.06]
0.218 ± 0.032
[5.54 ± 0.813]
0.040 ± 0.002
[1.02 ± 0.051]
CW02C...14
0.500 ± 0.062
[12.70 ± 1.57]
0.593
[15.06]
0.218 ± 0.032
[5.54 ± .813]
0.032 ± 0.002
[0.813 ± 0.051]
CW005
0.875 ± 0.062
[22.22 ± 1.57]
1.0
[25.40]
0.312 ± 0.032
[7.92 ± 0.813]
0.040 ± 0.002
[1.02 ± 0.051]
CW005...2
0.875 ± 0.062
[22.22 ± 1.57]
1.0
[25.40]
0.250 ± 0.032
[6.35 ± .813]
0.032 ± 0.002
[0.813 ± 0.051]
CW005...3
0.875 ± 0.062
[22.22 ± 1.57]
1.0
[25.40]
0.312 ± 0.032
[7.92 ± 0.813]
0.032 ± 0.002
[0.813 ± 0.051]
CW007
1.218 ± 0.062
[30.94 ± 1.57]
1.281
[32.54]
0.312 ± 0.032
[7.92 ± 0.813]
0.040 ± 0.002
[1.02 ± 0.051]
CW010
1.781 ± 0.062
[45.24 ± 1.57]
1.875
[47.62]
0.375 ± 0.032
[9.52 ± 0.813]
0.040 ± 0.002
[1.02 ± 0.051]
CW010...3
1.781 ± 0.062
[45.24 ± 1.57]
1.875
[47.62]
0.375 ± 0.032
[9.52 ± 0.813]
0.032 ± 0.002
[0.813 ± 0.051]
PERFORMANCE****
TEST CONDITIONS OF TEST TEST LIMITS
(CHARACTERISTIC V)
Thermal Shock Rated power applied until thermally stable, then a minimum
of 15 minutes at - 55 °C ± (2.0 % + 0.05 Ω) ΔR
Short Time Overload 5 x rated power (3.75 W and smaller), 10 × rated power
(4 W and larger) for 5 sec. ± (2.0 % + 0.05 Ω) ΔR
Dielectric Withstanding Voltage
1000 Vrms, one minute ± (0.1 % + 0.05 Ω) ΔR
Low Temperature Storage - 65 °C for 24 hours ± (2.0 % + 0.05 Ω) ΔR
High Temperature Exposure 250 hours at + 350 °C ± (4.0 % + 0.05 Ω) ΔR
Moisture Resistance MIL-STD-202 Method 106, 7b not applicable ± (2.0 % + 0.05 Ω) ΔR
Shock, Specified Pulse MIL-STD-202 Method 213, 100 g’s for 6 milliseconds, 10 shocks ± (0.2 % + 0.05 Ω) ΔR
Vibration, High Frequency Frequency varied 10 to 2000 Hz, 20 g peak, 2 directions 6 hours each ± (0.2 % + 0.05 Ω) ΔR
Load Life 2000 hours at rated power, + 25 °C, 1.5 hours “ON”, 0.5 hours “OFF” ± (3.0 % + 0.05 Ω) ΔR
Terminal Strength
5 to 10 second 10 pound pull test; torsion test - 3 alternating directions,
360 °C each
± (1.0 % + 0.05 Ω) ΔR
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.
