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CPR
Vishay Dale
Wirewound Resistors, Commercial Power, Radial Terminals
FEATURES
* Direct mounting on printed circuit board * Circuit board lock-in mounting tabs * High performance for low cost * Meets or exceeds requirements of EIA Standard RS-344 * Special inorganic potting compound and ceramic case provide high thermal conductivity in a fireproof package
STANDARD ELECTRICAL SPECIFICATIONS
MODEL POWER RATING P40C W 3 5 7 10 15 20 RESISTANCE RANGE
5%, 10%
0.1 - 1k 0.1 - 1k 0.1 - 1.429k 0.1 - 2k 0.1 - 2k
WEIGHT (Typical) g 5.6 6.6 9.4 10.0 20.3 25.6
CPR-3 CPR-5 CPR-7 CPR-10 CPR-15 CPR-20
0.15 - 2.855k
TECHNICAL SPECIFICATIONS
PARAMETER Temperature Coefficient Short Time Overload Terminal Strength Dielectric Withstanding Voltage Maximum Working Voltage Operating Temperature Range UNIT ppm/C lb VAC V C CPR RESISTOR CHARACTERISTICS 600 below 1.0, 300 1.0 and above 5 x rated power for 5 seconds 10 minimum 1000 (P x R)1/2 - 65/+ 275
NOTE: Wirewound CPR 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.
ORDERING INFORMATION
CPR-10 MODEL
100 RESISTANCE
5% TOLERANCE %
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For technical questions, contact ww2aresistors@vishay.com
Document Number 30219 Revision 07-Feb-02
CPR
Wirewound Resistors, Commercial Power, Radial Terminals
DIMENSIONS
A B C
0.020 0.005 [0.508 0.127] Material Thickness Maximum Misalignment D 5
Vishay Dale
G
F E
0.180 0.010 [4.57 0.254]
MODEL A 0.040 [1.02] CPR-3 CPR-5 CPR-7 CPR-10 CPR-15 CPR-20 0.906 [23.01] 1.060 [26.92] 1.398 [35.51] 1.888 [47.96] 1.888 [47.96] 2.498 [63.45] B 0.031 [0.787] 0.375 [9.53] 0.375 [9.53] 0.375 [9.53] 0.375 [9.53] 0.500 [12.70] 0.500 [12.70]
DIMENSIONS in inches [millimeters] C 0.031 [0.787] 0.375 [9.53] 0.360 [9.14] 0.360 [9.14] 0.360 [9.14] 0.500 [12.70] 0.500 [12.70] D + 0.080 [2.03] - 0.040 [1.02] 0.394 [10.01] 0.394 [10.01] 0.984 [24.99] 0.984 [24.99] 1.180 [29.97] 1.180 [29.97]
0.012
[0.305] 0.287 [7.29] 0.287 [7.29] 0.287 [7.29] 0.287 [7.29] 0.394 [10.01] 0.394 [10.01]
E
0.008
[0.203] 0.055 [1.40] 0.055 [1.40] 0.055 [1.40] 0.055 [1.40] 0.106 [2.69] 0.106 [2.69]
F
0.060
[1.52] 0.500 [12.70] 0.590 [14.99] 0.886 [22.50] 1.380 [35.05] 1.280 [32.51] 1.870 [47.50]
G
RATED POWER IN %
MATERIAL SPECIFICATIONS
Element: Copper-nickel alloy or nickel-chrome alloy, depending on resistance value Core: Woven fiberglass Body: Steatite ceramic case with inorganic potting compound Terminals: Tin/lead plated cold roll steel Part Marking: DALE, Model, Wattage, Value, Tolerance, Date Code
120 100 80 60 40 20 0 -65 -25 25 40 75 125 175 225 275
Derating
AMBIENT TEMPERATURE IN C
PERFORMANCE
TEST Thermal Shock Short Time Overload Dielectric Withstanding Voltage Low Temperature Operation Humidity Load Life Terminal Strength Resistance to Solder Heat Document Number 30219 Revision 07-Feb-02 CONDITIONS OF TEST - 55C to + 275C, 5 cycles, 30 minute dwell time 5 x rated power for 5 seconds 1000Vrms for one minute - 65C, full rated working voltage for 45 minutes 75C, 90% - 100% RH, 240 hours 1000 hours at rated power, + 40C, 1.5 hours "ON", 0.5 hours "OFF" 10 pounds in axial direction for 30 seconds Terminal immersed 3.5 seconds in molten solder at 1/8" to 3/16" from body For technical questions, contact ww2aresistors@vishay.com TEST LIMITS (EIA RS-344) (5.0% + 0.05)R (4.0% + 0.05)R (2.0% + 0.05)R (3.0% + 0.05)R (5.0% + 0.05)R (10.0% + 0.05)R (2.0% + 0.05)R (4.0% + 0.05)R www.vishay.com 35

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