300 Series
Vishay Foil Resistors
Bulk Metal® Foil Technology High Precision 4-Terminal Power Current Sensing Resistors with TCR as low as ± 1 ppm/°C and Tolerance ± 0.1 %
FEATURES
• Temperature Coefficient of Resistance (TCR):
Any value at any tolerance available within resistance range The 300 Series offers precision Bulk Metal® Foil technology resistors as low as 5 mΩ with a temperature coefficient down to 1 ppm/°C and unmatched long term stability. The 4 terminal current sensing resistors, when mounted on a heat sink, can sustain 10 watts continuously without an appreciable change in resistance (0.15 % maximum). The typical 50 % power derating specification associated with other technologies is not necessary. A choice of lead configurations is available. Our Application Engineering Department is available to advise and make recommendations. For non-standard technical requirements and special applications, please contact us.
IM PR O VE D
TABLE 1 - CHARACTERISTICS
MODEL NUMBER VCS301, VCS302
RESISTANCE RANGE 0.005 Ω < R < 0.1 Ω 0.1 Ω ≤ R < 0.25 Ω 0.25 Ω < R < 500 Ω
TOLERANCE1) ±1%
VCS331, VCS332
Notes 1. Tighter tolerance is available - for more details contact Application Engineering 2. The lower of the two limitations (Power or Current) is decisive 3. Heatsink - Aluminum (6 inches length x 4 inches width x 2 inches height x 0.04 inches thick)
TABLE 2 - TCR CHART (MAXIMUM)
(0 °C TO + 60 °C) < 0.01 Ω < 0.05 Ω < 0.1 Ω
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