Meter shunts reduce resistance for higher accuracy
WSMS5515 Power Metal Strip® resistors
from Vishay use a new manufacturing
technology to combine ultra-low
resistance values and 3W power rating
within small component dimensions.
The devices are
optimised for metershunt
duties in
power-measurement
equipment.
Available in resistances of
100µΩ, 160µΩ, 200µΩ,
250µΩ, 300µΩ and 500µΩ,
the WSMS5515 resistors
have standard dimensions
of 55mm x 15mm and
thickness up to
approximately 1.5mm
determined by resistance
value. The four-terminal
layout allows Kelvin
connection in precision
applications.
Performance advantages include inductance
below 5nH enabling good frequency response
to 50MHz, as well as thermal EMF of less than
3µV/°C for stable noise performance over a
wide temperature range. The resistors also
display a stable Temperature-Coefficient of
Resistance (TCR) of ±225ppm/°C for values up
to 250µΩ and ±175ppm/°C for the 300µΩ and
500µΩ versions.
FEATURES
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- 5% tolerance
- Operating temperature range:
-65°C to 170°C
- Zero temperature derating up to 70°C
- Typical weight: 7.8g
- All-welded construction
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APPLICATIONS
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- Industrial power meters
- Commercial utility-metering systems
- Domestic electricity meters
- Precision metering equipment
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WSMS5515 Power Metal Strip® resistors are optimised
for meter-shunt duties in power-measurement equipment.
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