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- PRECISION RESISTOR’S MISSION
- To continue a tradition ... with competitively priced, high quality, 100% USA produced
custom precision fixed wire wound resistors, sensors and shunts for critical applications
and to serve the needs of our customers who utilize these products.
- BETTER FLEXIBILITY FOR
CUSTOM ENGINEERING
- PRC's precision wire wounds are
ideal for short run development
projects as well as long production
runs that are needed in a hurry.
Set-ups and tooling are easier to
assemble than other resistor types
and specs can be quickly transferred
from the model shop and laboratory
to the production floor.
- BUY ONLY WHAT YOU NEED
- Why buy 50 pieces or more, if all you
need are a few resistors for tests or a
dozen parts to complete your
requirement? Small quantity lots or
high volume production quantities are
accurately checked 100% to assure
specified limits and delivered on time
to meet critical schedules.
- LARGE SELECTION
- Widest range of values anywhere!
You can specify any resistance
value or decimal part of an ohm
from 0.001Ω to 10MegΩ
with tolerances to ±0.005% and
TCR's to 0±1 ppm/°C. depending on the part desired. We also manufacture
temperature-sensitive resistors
and compensators to +6000 ppm/°C.
as well as a complete line of 4 terminal
thru-hole and SMD precision
sub-miniature current shunts.
- LOW VALUE/LOW TCR
COMBINATIONS
- PRC's extremely low values to
1 milliohm and TCR ±15 ppm/°C.
provide better load-stability. This
means the quality to resist permanent
change is designed into the
parts from the start for dependable
and repeatable measurements
piece-to-piece.
- HIGH SURGE CURRENT
HANDLING CAPABILITIES
- Many other resistor types on the
market require at least 2 or more
parts to equal the power and
overload capabilities of 1 PRC
resistor. That's why the 3 and 5
watt precision shunt values
are so popular.
- COMMERCIALLY PURE
COPPER TERMINAL
- Why copper? Because of its
excellent current carrying capacity.
No material is better suited for
precision parts than commercially
pure copper. That is, oxygen-free,
high conductivity, low resistivity,
hot-tinned copper terminals. Hottinned
rather than electro-tin plated
terminals because they offer
better wetting characteristics
and longer shelf life. Beware of
copper clad or other materials that
have a strong magnetic attraction
and exhibit a high EMF especially
when specifying low value precision
resistors. Another reason
engineers want commercially
pure copper is because of its low
resistivity.
- LOW THERMAL EMF ACHIEVED USING COPPER LEADS
- All PRC resistors (especially
low values) have low EMF (<0.3
to 1.5 microvolts per deg. C.) with
respect to the copper terminals.
Many low value tin oxide and other
general-purpose power resistors in
the industry have thermocouple
errors as large as 100 microvolts
per deg. C., which degrade circuit
performance. Try to avoid thermal
gradients that could cause a large
temperature difference across the
resistor and specify resistors with
low EMF construction.
- TIME-PROVEN SERVICE
-
PRC's precision power resistors
are the choice of engineers and
designers because of their reasonable
costs and time-proven heavy duty
service. Reliability and
dependable quality year-after-year
are “the real value” of precision
wire wound resistors. If quality, stability, and product repeatability are what you value, Let our 70+ years of
experience in resistor design and manufacturing work for you.
We are very confident that you too can “Profit from Precision.”
