CP
Vishay Dale
www.vishay.com
32 Document Number 30213
Revision 07-Aug-03
For technical questions, contact ww2aresistors@vishay.com
FEATURES
•High performance for low cost
•Meets or exceeds requirements of EIA Standard RS-344
•High power to size ratio
•Ceramic cases are available with circuit board stand-offs
(designated with a - 3 model ending)
•Special inorganic potting compound and ceramic case
provide high thermal conductivity in a fireproof package
ORDERING INFORMATION
CP-5-3 100Ω10%
MODEL RESISTANCE TOLERANCE
Ω± %
Wirewound/Metal Oxide Resistors,
Commercial Power, Axial Lead
*To specifically order a Wirewound sub-assembly for resistance values that overlap between the Wirewound and Metal Oxide technologies, the
model will be a CP-x-85 for standard body and CP-x-91 for body with stand-offs. To specifically order a Metal Oxide sub-assembly for
resistance values that overlap between the Wirewound and Metal Oxide technologies, the model will be a CP-x-100 for a standard body and
CP-x-101 for body with stand-offs. If no dash type is specified, either technology may be supplied.
NOTE: Wirewound CP resistors can reliably function as a fuse and as a resistor. Such components involve compromise between fusing and
resistive functions; therefore, each design should be tailored to the application to ensure optimum performance. Contact factory by using the
e-mail address at the bottom of this page for design assistance.
TECHNICAL SPECIFICATIONS
PARAMETER UNIT WIREWOUND CHARACTERISTICS METAL OXIDE CHARACTERISTICS
Temperature Coefficient ppm/°C± 600 below 1Ω, ± 300 1Ω and above
± 300 for CP-2 to CP-5; ± 400 for CP-7 to CP-20
Short Time Overload - 5 x rated power for 5 seconds 5 x rated power for 5 seconds
Terminal Strength lb 10 minimum 10 minimum
Operating Temperature Range °C - 65/+ 275 - 65/+ 225
Dielectric Withstanding Voltage VAC 1000 1000
Maximum Working Voltage V (P x R)1/2 (P x R)1/2
STANDARD ELECTRICAL SPECIFICATIONS
MODEL POWER RATING RESISTANCE RANGE WEIGHT
P40°CΩ(Typical)
± 10% Standard, ± 5% Available
W WIREWOUND* METAL OXIDE* g
CP-2 2 0.1 - 1k 100 - 12k 2.0
CP-2-3 2 0.1 - 1k 100 - 12k 2.2
CP-3 3 0.1 - 2k 150 - 22k 3.4
CP-3-3 3 0.1 - 2k 150 - 22k 3.6
CP-5 5 0.1 - 2.4k 150 - 27k 4.8
CP-5-3 5 0.1 - 2.4k 150 - 27k 5.0
CP-7 7 0.1 - 5k 1k - 35k 6.8
CP-7-3 7 0.1 - 5k 1k - 35k 7.0
CP-10 10 0.1 - 7k 1k - 40k 9.5
CP-10-3 10 0.1 - 7k 1k - 40k 9.9
CP-15 15 0.1 - 8k 1k - 40k 16.8
CP-15-3 15 0.1 - 8k 1k - 40k 17.4
CP-20 20 0.1 - 10k 1k - 45k 22.8
CP-20-3 20 0.1 - 10k —23.6
CP-22 22 0.1 - 10k —24.5
CP-22-3 22 0.1 - 10k —25.3
CP-25 25 0.1 - 10k —37.0
www.vishay.com
33
CP
Vishay Dale
Document Number 30213
Revision 07-Aug-03 For technical questions, contact ww2aresistors@vishay.com
DIMENSIONS
CP-x-3
0.125
[3.18]
Typical
F
Typical A
C
B
D
E
CP-x
F
Typical
EB
C
A
MODEL DIMENSIONS in inches [millimeters]
A*BCD E F
±
0.031
±
0.031
±
0.031
±
0.031
±
0.001 WIRE- METAL
[0.794] [0.794] [0.794] [0.794] [0.025] WOUND OXIDE
WIRE- METAL
±
0.125
WOUND OXIDE [3.175]
MINIMUM
CP-2 0.688 0.250 0.250 —0.032 0.032 1.500 0.750
[17.46] [6.35] [6.35] [0.813] [0.813] [38.10] [19.05]
CP-2-3 0.688 0.250 0.250 0.313 0.032 0.032 1.500 0.750
[17.46] [6.35] [6.35] [7.94] [0.813] [0.813] [38.10] [19.05]
CP-3 0.875 0.313 0.313 —0.036 0.032 1.500 1.000
[22.22] [7.94] [7.94] [0.914] [0.813] 38.10] [25.40]
CP-3-3 0.875 0.313 0.313 0.375 0.036 0.032 1.500 1.000
[22.22] [7.94] [7.94] [9.52] [0.914] [0.813] [38.10] [25.40]
CP-5 0.875 0.375 0.344 —0.036 0.032 1.500 1.000
[22.22] [9.52] [8.73] [0.914] [0.813] [38.10] [25.40]
CP-5-3 0.875 0.375 0.344 0.406 0.036 0.032 1.500 1.000
[22.22] [9.52] [8.73] [10.32] [0.914] [0.813] [38.10] [25.40]
CP-7 1.391 0.375 0.344 —0.036 0.032 1.500 1.000
[35.32] [9.52] [8.73] [0.914] [0.813] [38.10] [25.40]
CP-7-3 1.391 0.375 0.344 0.469 0.036 0.032 1.500 1.000
[35.32] [9.52] [8.73] [11.91] [0.914] [0.813] [38.10] [25.40]
CP-10 1.875 0.375 0.344 —0.036 0.032 1.500 1.000
[47.62] [9.52] [8.73] [0.914] [0.813] [38.10] [25.40]
CP-10-3 1.875 0.375 0.344 0.469 0.036 0.032 1.500 1.000
[47.62] [9.52] [8.73] [11.91] [0.914] [0.813] [38.10] [25.40]
CP-15 1.875 0.500 0.500 —0.036 0.032 1.500 1.000
[47.62] [12.70] [12.70] [0.914] [0.813] [38.10] [25.40]
CP-15-3 1.875 0.500 0.500 0.625 0.036 0.032 1.500 1.000
[47.62] [12.70] [12.70] [15.87] [0.914] [0.813] [38.10] [25.40]
CP-20** 2.500 0.500 0.500 —0.036 0.032 1.500 1.000
[63.50] [12.70] [12.70] [0.914] [0.813] [38.10] [25.40]
CP-20-3 2.500 0.500 0.500 0.625 0.036 —1.500 —
[63.50] [12.70] [12.70] [15.87] [0.914] [38.10]
CP-22 2.500 0.500 0.500 —0.036 —1.500 —
[63.50] [12.70] [12.70] [0.914] [38.10]
CP-22-3 2.500 0.500 0.500 0.625 0.036 —1.500 —
[63.50] [12.70] [12.70] [15.87] [0.914] [38.10]
CP-25 2.500 0.625 0.625 —0.040 —1.500 —
[63.50] [15.87] [15.87] [1.016] [38.10]
Wirewound/Metal Oxide Resistors, Commercial Power,
Axial Lead
MATERIAL SPECIFICATIONS
Element: Wirewound = Copper-nickel alloy or
nickel-chrome alloy, depending on resistance
value
Metal Oxide = High temperature fired Metal
Oxide film
Core: Wirewound = Woven fiberglass
Metal Oxide = Alumina ceramic
Body: Steatite ceramic case with inorganic
potting compound
End Caps: Tin plated steel
Terminals: Tinned copper
Part Marking: DALE, Model, Wattage, Value,
Tolerance, Date Code
PERFORMANCE
TEST CONDITIONS OF TEST TEST LIMITS (EIA RS-344)
Thermal Shock
-55°C to + 275°C (+225°C for Metal Oxide), 5 cycles, 30 minute dwell time
± (5.0% + 0.05Ω)∆R
Short Time Overload 5 x rated power for 5 seconds ± (4.0% + 0.05Ω)∆R
Dielectric Withstanding Voltage
1000Vrms for one minute ± (2.0% + 0.05Ω)∆R
Low Temperature Operation - 65°C, full rated working voltage for 45 minutes ± (3.0% + 0.05Ω)∆R
Humidity 75°C, 90% - 100% RH, 240 hours ± (5.0% + 0.05Ω)∆R
Load Life 1000 hours at rated power, + 25°C, 1.5 hours "ON", 0.5 hours "OFF" ± (10.0% + 0.05Ω)∆R
Terminal Strength 5 pounds for 30 seconds; body twisted about axis, 3 360° rotations ± (2.0% + 0.05Ω)∆R
Resistance to Solder Heat Terminal immersed 3.5 seconds in molten solder at 1/8" to 3/16" from body ± (4.0% + 0.05Ω)∆R
*Potting compound may extend outside of ceramic case up to 0.060" [1.52]
maximum per side.
**Dimensions for the metal oxide
A = 2.360 [59.94], B = 0.570 [14.48], C = 0.530 [13.46], E = 0.032 [0.813],
F = 1.000 [25.40]
Derating
120
100
80
60
40
20
0
RATED POWER IN %
-65 -25 25 75 125 175 225 275
AMBIENT TEMPERATURE IN °C
Wirewound
Metal Oxide
40
