AXIAL LEAD PRECISION
WIREWOUND RESISTORS
ISO-9001
Registered
HR, VA, SP,
7000, 8000
SERIES
MIL-R-93 (RB) & MIL-R-39005 (RBR)
& COMMERCIAL STYLES
Non-stress encapsulation
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 selected wire is control
stress wound on special designed bobbins. All
MIL-R-39005 SPECIFICATIONS:
Temperature Range
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
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com
1
ISO-9001
Registered
HR, VA, SP, 7000, 8000 SERIES SPECIFICATIONS:
MIL-R-93
Wattage
IRC/
MIL
Comm
Shallcross / 39005
Style
125°C
85°C
Style
0.125
0.250
7009/VA10
RB56
0.125
0.250
RBR56
HR10
0.15
0.33
7010/VA12
RB55
HR12
7020/VA14
HR14
7030/VA34
HR34
7040/VA36
HR36
7004
7005/SP41
7006
7007/SP21
SP42
RBR55
RB54
RBR54
RB53
RBR53
RB52
RBR52
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---
---
---
---
0.15
0.25
0.25
0.33
0.33
0.50
0.50
---
---
---
---
---
0.30
0.50
0.50
0.66
0.66
1.00
1.00
0.05
0.10
0.10
0.250
0.125
Resistance (ohms)
Max.
Dimensions
Mil
Comm Working Volt ±0.032A
±0.015B
±0.002C
Min
Max
(Comm)
Inches (mm) Inches (mm) Inches (mm)
Max
0.1
1.4M
200
0.343 (8.7) 0.250 (6.3)
0.032 (0.8)
127K
0.1
840K
200
220K
0.343 (8.7)
0.250 (6.3)
0.032 (0.8)
0.1
3M
300
176K
0.500 (12.7)
0.250 (6.3)
0.032 (0.8)
0.1
1M
300
332K
0.500 (12.7)
0.250 (6.3)
0.032 (0.8)
0.1
4.4M
300
226K
0.750 (19.0)
0.250 (6.3)
0.032 (0.8)
0.1
2M
300
526K
0.750 (19.0)
0.250 (6.3)
0.032 (0.8)
0.1
8M
500
604K
0.750 (19.0)
0.375 (9.5)
0.032 (0.8)
0.1
3M
500
1.1M
0.750 (19.0)
0.375 (9.5)
0.032 (0.8)
0.1
12M
750
1M
1.00 (25.4)
0.375 (9.5)
0.032 (0.8)
0.1
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---
---
---
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1.2M
---
---
---
---
---
3M
250K
300K
350K
700K
200K
750
150
150
200
300
200
1.00 (25.4)
0.30(7.6)
0.25 (6.3)
0.31 (7.9)
0.375 (9.5)
0.375 (9.5)
0.375 (9.5)
0.10 (2.5)
0.125 (3.2)
0.125 (3.2)
0.188 (4.8)
0.125 (3.2)
0.032 (0.8)
0.020 (0.5)
0.025 (0.6)
0.025 (0.6)
0.025 (0.6)
0.025 (0.6)
SUBMINIATURES
*For all styles commercial ratings may be applied at 125°C provided 175°C max. operating temperature is permissible.
NOTE: Contact factory for availability of other styles and sizes of above product.
**Customer must specify TCR required.
B Dia.
A
Length
1.5 Min.
Lead Length
C
HOW TO ORDER
Sample Part No.:
RBR52
L
12601
B
R
Style
Terminal
L = Solderability, U = Weldable
Resistance
Tolerance
Failure Rate
For commercial equivalents:
Style - Resistance - Tolerance - TCR
2
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com
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