CPR High Volume

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Vishay Dale

End of Life July 2020

Revision: 05-Feb-2020

3

Document Number: 30261

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

MATERIAL SPECIFICATIONS

Element:



wirewound = copper-nickel alloy or nickel-chrome alloy,

depending on resistance value;



metal oxide = high temperature fired metal oxide film

Core: ceramic

Body: steatite ceramic case with cement potting compound

Terminals: tin plated steel

Part Marking: DALE, model, wattage, value, tolerance,

date code

DERATING

AMBIENT TEMPERATURE IN °C

0

20

40

60

80

100

120

-55

75

275

-25

175

225

125

25

40

Wirewound

Metal oxide

PERFORMANCE

TEST

CONDITIONS OF TEST

TEST LIMITS

Thermal Shock

-55 °C to +275 °C (+225 °C for metal oxide), 5 cycles, 30 min dwell time

± (5.0 % + 0.05

) R

Short Time Overload

5 x rated power for 5 s

± (4.0 % + 0.05

) R

Dielectric Withstanding Voltage

± (2.0 % + 0.05

Low Temperature Operation

-65 °C, full rated working voltage for 45 min

± (3.0 % + 0.05

Humidity

75 °C, 90 % to 100 % RH, 240 h

± (5.0 % + 0.05

Load Life

1000 h at rated power, +40 °C, 1.5 h “ON”, 0.5 h “OFF”

± (10.0 % + 0.05

Terminal Strength

5 pounds for 30 s; body twisted about axis, 3 x 360° rotations

± (2.0 % + 0.05

Resistance to Solder Heat

Terminal immersed 3.5 s in molten solder at 1/8" to 3/16" from body

± (4.0 % + 0.05