Foil Resistors Series WA and WB0 pages
Metal Foil
nnnnUltra^Precision
nnnnResistors
nnnnWilbrecht Series WA and Series WB
nnnnFEATURES
nnnn• Temperature Coefficient
nnnnof Resistance (TCR):
nnnn±2.5ppm/°C available
nnnn• Selected TCR Tracking:
nnnnto 0.5ppm/°C (matched sets)
nnnn• Shelf Life Stability: ±25ppm
nnnnmaximum for 1 year
nnnn• Power Rating: 0.3 Watts at 125°C
nnnn• Load Life Stability: ±150ppm
nnnnMaximum AR (2000 hours at
nnnnrated power)
nnnn• Resistance Tolerance: ±0.005%
nnnnto ±1.0%
nnnn• Resistance range: 2.99 Ohms to
nnnn200K Ohms
nnnn• Current Noise: 0.010|jiV
nnnn(RMS)/Volt of Applied Voltage
nnnn• Thermal EMF: 0.1|jiV/oC
nnnnMaximum; 0.05|JA//oC Typical;
nnnn1 |xV/Watt
nnnn• Rise/Decay Time: 1.0 nanosecond
nnnn@1KOhms
nnnnManufactured in our Huron, SD factory, the WA and WB series
nnnnmetal foil ultra-precision resistors are designed for the most stringent
nnnntemperature and drift stability requirements. Demanding applications
nnnnsuch as oil field data-logging, commercial flight navigation systems,
nnnnand automated IC test equipment routinely use our metal foil resistors.
nnnnWILBRECHT_
nnnnELECTRONICS, INC.
nnnn1400 Energy Park Drive, Suite 18 • St. Paul, MN 55108» Toll Free (888) 323-8751 «(651) 659-0919 • Fax (651 ) 659-9204 • www.wilbrecht.com
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