AXIAL LEAD
PRECISION WIREWOUND
RESISTORS
HR, VA, SP,
7000, 8000 SERIES
Non-stress encapsulation
MIL-R-93 (RB) & MIL-R-39005 (RBR)
& COMMERCIAL STYLES
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Automated, precision
windings, protected by
silastic undercoat
Welded terminations
0.1 ohm to 12 meg ohms
0.1 to 1.0 watts
Tolerance to ±.01%
Approved to M, P, & R levels
TC's from ±2 ppm/°C to +6000 ppm/°C
Meets or exceeds all applicable MIL-R-93 & MIL -R-39005 ratings
These ultra precision resistors are designed and
produced for critical parameter applications. They
are available for established reliability military
and/or commercial applications requiring state of
the art precision and stability.
Construction features may vary slightly between
commercial and military styles, but both are
produced under the same rigid quality control
system required by the tightest military
specifications. Both are produced in the same
production line using the same highly trained
operators required to produce the established
reliability product.
Whether military or commercial, all resistors are
carefully monitored during assembly, winding,
coating, and stabilization procedures to assure
high quality standards even when their prescribed
parameters are non critical. Premium grade
MIL-R-39005 SPECIFICATIONS:
Temperature Range
selected wire is control stress wound on special
designed bobbins. All terminations are welded to
reduce contact noise and thermal EMF. Extensive
accelerated aging programs both before and after
calibration assure precise initial accuracy and high
resistance stability.
Encapsulation is accomplished by transfer
molding with special moisture resistant epoxy or
by unique dry air chamber epoxy shell technique
for established reliability parts. A resilient inner
coating is used to minimize internal stresses on all
parts.
The established reliability military parts are burned
in 100 hours at 125°C ambient as part of group A
acceptance testing. Documentation and special
test are available upon customer request to meet
your unique requirements.
Standard Temperature Coefficient
±10 ppm/°C 100Ω up
±15 ppm/°C 10Ω to 100Ω
-65°C to +145°C
±30 ppm/°C 1Ω to 10Ω
±90 ppm/°C below 1Ω
Special Temperature Coefficients Available
WIRE AND FILM TECHNOLOGIES
Version 6.0
736 Greenway Road · PO Box 1860 · Boone, North Carolina 28607-1860 · Tel: 704-264-8861 · Fax: 704-264-8865
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