WSBS8518...34 www.vishay.com Vishay Dale DIMENSIONS in inches (millimeters) DERATING TOLERANCES ON DECIMALS 120 .xxx ± 0.005 [.x ± 0.1] 100 UNLESS OTHERWISE LISTED 80 Rated Power in % 60 RESISTANCEELEMENTAVALUE (μ)MATERIALREFERENCE 40 100 Ni-Cr 0.120 [3.05] 500 Ni-Cr 0.615 [15.62] 20 1000 Ni-Cr 0.900 [22.86] 0- 65- 50 - 25 0 25 50 75 100 125 150 175 Ambient Temperature in °C70PERFORMANCETESTCONDITIONS OF TESTTEST LIMITS Thermal shock -55 °C to +150 °C, 1000 cycles, 15 min at each extreme ± 0.5 % R Short time overload 5x rated power for 5 s ± 0.5 % R Low temperature storage -65 °C for 24 h ± 0.2 % R High temperature exposure 1000 h at +170 °C ± 1.0 % R Bias humidity +85 °C, 85 % RH, 10 % bias, 1000 h ± 0.5 % R Mechanical shock 100 g’s for 6 ms, 5 pulses ± 0.2 % R Vibration Frequency varied 10 Hz to 2000 Hz in 1 min, 3 directions, 12 h ± 0.2 % R Load life 1000 h at +70 °C, 1.5 h “ON”, 0.5 h “OFF” ± 1.0 % R Moisture resistance MIL-STD-202, method 106, 0 % power, 7b not required ± 0.2 % R Revision: 09-Mar-17 2 Document Number: 30354 For technical questions, contact: ww2cresistors@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